catalogo siwarex

Introduction Generalcharacteristics

Weighingelectronics

DescriptionTechnical specificationsOrdering data

Load cells andmountingcomponents

DescriptionTechnical specificationsOrdering data

Technicaldescription

Weighing electronicsLoad cellsConfiguration

Appendix A&D online services&D online servicesIndexesConditions of sale anddelivery

Please contact yourlocal Siemens officeor representative

The products of this catalog are also contained in the CD-ROM catalogCA 01Order-No.:E86060-D4001-A110-B5-7600B5-7600

•

Supersedes:persedes: Catalog KT 30 • 1999

The products and systems des-cribed in this catalog are sold under application of a quality management system certified by DQS in accordance with DIN EN ISO 9001 (Certificate Certificate Registration No.: 1108).

Further information and news concerning SIWAREXcan also be found in the Internet underhttp://www.siwarex.comx.com

© Siemens AG 2001

1/2 Siemens WT 01 · 2002

Weighing electronics

General characteristics

Introduction


Nowadays, in areas of automation and process technology that involve measurement of forces or weights, state-of-the-art weighing systems are used to monitor and control a wide variety of production processes.

Their use extends from simple applications, such as the monitor-ing of belt tension or filling level measurement of containers and bins, to complex proportioning tasks, such as making of mix-tures based on specified recipes.

Weighing systems are particularly suitable for measuring tasks requiring high accuracy or verification and for applications for which other measuring techniques are unsuitable (e.g. filling level measurement of foam-forming substances, measurement of aggressive substances that may cause sensor damage, or measurements subjects to hygienic restrictions). These weigh-ing systems are to be found in the production of food and animal feed, in the chemical and pharmaceutical industries, and in gen-eral mechanical engineering.

SIWAREX™ weighing systems in automation

Totally Integrated Automation plays an essential role in SIWAREX weighing systems.

Complete integration of SIWAREX into the SIMATIC™ world is a primary characteristic.

This means: through:7 Implementation of central

automation conceptsDirect integration in SIMATIC S5 and S7

7 Implementation of distributed automation concepts

Integration in SIMATIC NET (PROFIBUS-DP)

7 Integration in process control systems

SIMATIC PCS 7

7 Operator control and monitor-ing

SIMATIC HMI

7 Uniform configuring and pro-gramming

SIMATIC software

Weighing and proportioning

In numerous industrial processes, weighing technology plays an important role. Today, weighing tasks have to be fulfilled in prac-tically all areas of a modern production plant (see Fig. on page 1/3, top).

Product liability laws and the international standard ISO 9001 place high demands on quality assurance in the manufacturing sector. Documentation must be available to be able to trace any product along the chain in the production process – from the final product back to the raw material. This, therefore, requires accounting and balancing of all material consumption quantities along the chain in the production process as well as transmitting the data to the operational control system for planning of mate-rial requirements and process documentation, making inte-grated automation solutions imperative.

By directly integrating weighing technology into the automation system, the required integrated plant structures can be imple-mented.

Weighing and proportioning are key technologies in industrial processes. Not only accurate weighing and proportioning but also high plant availability and advanced automation solu-tions are imperative for the success of a company. With weighing systems directly integrated into the SIMATIC auto-mation system in either central or distributed configurations, Siemens offers uniform solution concepts for weighing tech-nology.

Siemens WT 01 · 2002 1/3

Weighing electronicsIntroduction


Weighing applications embedded in the production process chain

Uniform SIMATIC system basis

By investing in SIWAREX weighing modules, you are investing in the uniform SIMATIC system basis on which the automation components of the entire production process can build – from incoming goods (upstream area) to the production process (mainstream area) down to the filling machine at the end of the production chain (downstream area) – a system basis which encompasses all hierarchic levels from the human-machine interface to the PROFIBUS-DP fieldbus. Why use a specialized technology for each weighing or proportioning problem when a uniform basis can be implemented for all individual problem solutions? With SIWAREX, Siemens has created this uniform basis.

Integrated automation solutions with weighing technology

SIWAREX weighing modules are ideally suited for integrated automation solutions which involve weighing technology. SIWAREX can be used for every SIMATIC solution regardless of whether it is integrated into the SIMATIC S5 or S7 programmable controller in the form of a module or used as a distributed I/O with the SIMATIC S5, S7 or C7.

The highlight: SIWAREX modules are integrated into the automa-tion system with the same engineering tools as all other automa-tion components. This is an excellent solution which reduces engineering costs and training expenses.

The modular ET 200M I/O station is configured on the basis of building blocks. The weighing modules are selected from the module catalog and placed in the rack of the modular I/O sta-tion. The software addresses the weighing modules as if they were modules plugged into the central controller of an automa-tion system.

With the use of standard hardware (SIMATIC components) and standard software (STEP 7), freely programmable, modular weighing systems are available which can be inexpensively adapted to specific plant requirements. A few examples are listed below:

• Additional digital outputs for SIMATIC for controlling a mixer, heater, agitator, etc.

• Additional functions implemented with STEP 5/7 for determin-ing and controlling the material flow or for correcting the set-point based on material moisture.

The advantages of direct integration at a glance:

7 Low-cost system integration because no additional cou-pling modules are required due to direct integration

7 Low configuration costs due to the uniform system concept

7 System-compatible module response (diagnostic interrupts, command output disables, etc.)

7 Tailor-made low-cost weighing systems due to expansion with standard SIMATIC components

7 High plant availability

7 Easy installation due to snap-on technique

7 Low space requirements due to compact design

Siemens WT 01 · 20021/4



Introduction

High plant availability – to ensure that production does not come to a halt

Apart from the advantage that required configuration know-how is limited to a single system, there are also enormous advan-tages in terms of plant availability.

In the SIMATIC S7 for example, faults (measuring range exceeded, etc.) are reported to the automation system via diag-nostic interrupts without writing a single line of programming code.

Error messages from the weighing module are automatically transferred to the programmable controller. The module from which the message originated is easily located by glancing at the diagnostic information.

Operating personnel are then able to localize the fault using a programmer or plant visualization, display the cause of the fault and, if necessary, replace the defective module.

When "active bus modules" are used, the SIWAREX U, M and A electronic weighing systems can even be replaced under power. A replaced module is automatically detected by the pro-grammable controller. Due to transparent data management, the scales parameters saved in the automation system can then be transferred to the new weighing module. The scales become immediately available for weighing tasks again – readjustment with calibration weights is not necessary (except in applications requiring verification).

Since SIWAREX weighing systems consist exclusively of stan-dard components (e.g. SIWAREX weighing modules, SIMATIC digital input/outputs, etc.), spare parts inventories are very easy to handle.

Totally integrated – in the SIMATIC PCS 7 process control system as well as in SIMATIC S5/S7

With SIMATIC S5/S7 programmable controllers, the weighing modules are usually integrated into the system with the typical PLC programming languages STL (Statement List), LAD (Ladder diagram) or FBD (Function Block Diagram). With the SIMATIC PCS 7 process control system, the weighing modules are inte-grated via graphical configuration using CFCs (Continuous Function Chart). Configuration is used instead of programming.

The scales are represented in the ES (engineering system) by "technology blocks" in the CFC. With the OS (operator station), however, faceplates are used in the WinCC visualization system to represent the scales.

The faceplates can be used to monitor the weight values and control the scales.

Scales displayed in the ES engineering system (on the left) and on the OS operator station (on the right)

Commissioning made easy

The new generation of SIWAREX modules can be easily commis-sioned. Using the SIWATOOL Windows parameterization soft-ware, SIWAREX U, SIWAREX M and SIWAREX A can be commissioned quickly and easily. The PC is directly connected to the function module via the RS 232 interface which even allows users without a knowledge of STEP 5/7 to specify all adjustable parameters of the SIWAREX module using input screens.

Easy menu-driven parameterization of the SIWAREX M weighing module via a PC connected to the RS 232 interface using the SIWATOOL param-eterization software

Siemens WT 01 · 2002 2/1


2/2 Description2/2 SIWAREX U2/3 SIWAREX M2/4 SIWAREX A2/5 SIWAREX P

2/6 Technical specifications

2/8 Accessories2/8 SIWAREX JB junction and

distribution box 2/9 SIWAREX Pi and IS

Ex interfaces

2/11 Ordering data2/11 SIWAREX U; M; A 2/14 SIWAREX P2/14 SIWAREX accessories

2/2 Siemens WT 01 · 2002


SIWAREX U

Description


SIWAREX U is an optimal solution in all areas where sensors (e.g. load cells, force sensors or torque measuring shafts) are used for measurement. The main applications of SIWAREX U include:

• Fill level monitoring of bins and hoppers

• Monitoring of crane loads

• Load measurement of conveyor belts

• Overload protection in industrial elevators and rolling mills

• Scales for potentially explosive areas (can be implemented by using an Ex(i) interface)

• Weight encoders for other types of scales (e.g. conveyor type scales, etc.).

Principle of operation

SIWAREX U is available with either one or two measuring chan-nels. One measuring channel is required for each set of scales.

In addition to its weighing functions, SIWAREX U monitors two user-parameterizable limits (i.e. either min./max.) and quickly signals any out-of-range values to the SIMATIC S7 via a process interrupt.

SIWAREX U has two serial interfaces. The TTY interface is used to connect up to four remote digital displays. In addition to the two weight values of weighing channels 1 and 2, another two val-ues can be set via SIMATIC and indicated on the remote dis-plays.

A PC can be connected to the RS 232 interface to parameterize the SIWAREX U. This interface can also be used for serial con-nection (SIWAREX protocol) of a host computer (e.g. PC).

Design

SIWAREX U is a compact function module (FM) of the SIMATIC S7-300 and can be snapped directly onto the SIMATIC S7-300 backplane bus. Direct integration into the automation system permits complete integration of weighing and proportioning functions into the SIMATIC S7-300. Moreover, the weighing mod-ule can be connected to PROFIBUS-DP via the modular ET 200M I/O system and can thus be operated as a distributed I/O for the SIMATIC S5, SIMATIC S7 or SIMATIC C7.

SIWAREX U cannot only be integrated into plant software using the classic PLC programming languages STL (Statement List), LAD (Ladder Diagram), FBD (Function Block Diagram) or SCL (Structured Control Language). Graphical configuration is also possible with CFCs (Continuous Function Chart), where face-plates have been provided in PCS 7 for visualization of the scales.

Uniform communication between all system components per-mits fast, reliable and cost-effective integration into process engineering plants. In contrast to weighing electronics linked via a serial interface, costly additional modules for linking the mod-ules to the SIMATIC system are not required with SIWAREX U. Assembly and wiring are also greatly simplified by using rails with snap-on technology. Through the integration into SIMATIC, user-programmable modular weighing systems are available that can be adapted as desired to the customer's requirements.

SIWAREX weighing modules are fully operable in no time at all using the "SIWATOOL" PC parameterization software and the familiar Windows interface. All adjustable parameters for the weighing modules can be defined in screen forms, stored on diskette and printed out for plant documentation.

In online operation, the extensive diagnostic facilities provided by SIWATOOL ensure the rapid localization of faults.

SIWAREX U has already been adjusted at the factory. This not only permits theoretical adjustment of the scales without adjust-ment weights, but also makes it possible to replace modules without having to re-adjust the scales. In conjunction with "active bus modules", modules can be replaced during normal opera-tion. The SIWAREX U weighing module can also be used in potentially explosive areas (zones 1 and 2). Here, intrinsically-safe powering of the load cells is ensured with an optional Ex(i) interface.

Siemens WT 01 · 2002 2/3

Weighing electronicsDescription

SIWAREX M

SIWAREX M is a weighing and proportioning system with verifi-cation capability for maximum accuracy requirements. The main applications of SIWAREX M include:

• Fill level scales with verification capability

• Platform scales and vehicle scales with verification capability

• Single component scales

• Multi-component scales

• Proportioning scales with verification capability

• Scales for potentially explosive areas (can be implemented by using an Ex(i) interface)

• Weight encoders for other types of scales (e.g. differential pro-portioning scales, etc.).


In addition to its extensive weighing functions, SIWAREX M also controls proportioning independently of the cycle time of the automation system. Functions such as coarse or fine proportion-ing, automatic reproportioning with or without inching mode as well as auto-optimization for the fine flow switch-off point permit optimal proportioning accuracy.

The two serial interfaces (TTY and RS 232) of the SIWAREX M are used to connect a printer and a remote display, both with ver-ification capability, or a PC for parameterizing the SIWAREX M. These interfaces can also be used alternately for the serial con-nection (3964R or SIWAREX protocol) of a host computer (e.g. a PC). In addition to the two serial interfaces, 4 digital outputs, 3 digital inputs and an analog output are available on the module.

The functions of the inputs and outputs can be specified based on the application at hand.

Design

SIWAREX M is a compact function module (FM) of the SIMATIC S7-300 and can be snapped directly onto the SIMATIC S7-300 backplane bus. Direct integration into the automation system permits complete integration of weighing and proportioning functions into the SIMATIC S7-300. Moreover, the weighing mod-ule can be connected to PROFIBUS-DP via the modular ET 200M I/O system and can thus be operated as a distributed I/O for the SIMATIC S5, SIMATIC S7 or SIMATIC C7.

SIWAREX M cannot only be integrated into plant software using the classic PLC programming languages STL (Statement List), LAD (Ladder Diagram), FBD (Function Block Diagram) or SCL (Structured Control Language). Graphical configuration is also possible with CFCs (Continuous Function Chart), where face-plates have been provided in PCS 7 for visualization of the scales.

Uniform communication between all system components per-mits fast, reliable and cost-effective integration into process engineering plants. In contrast to weighing electronics linked via a serial interface, costly additional modules for linking the mod-ules to the SIMATIC system are not required with SIWAREX M. Assembly and wiring are also greatly simplified by using rails with snap-on technology. Through the integration into SIMATIC, user-programmable modular weighing systems are available that can be adapted as desired to the customer's requirements.



SIWAREX M has already been adjusted at the factory. This not only permits theoretical adjustment of the scales without adjust-ment weights, but also makes it possible to replace modules without having to re-adjust the scales. In conjunction with "active bus modules", modules can be replaced during normal opera-tion. The SIWAREX M weighing module can also be used in potentially explosive areas (zones 1 and 2). Here, intrinsically-safe powering of the load cells is ensured with an optional Ex(i) interface.

Siemens WT 01 · 20022/4


SIWAREX A

Description

SIWAREX A is a weighing and proportioning system with verifi-cation capability for maximum accuracy requirements and fast processes. The main applications of SIWAREX A include:• Filling plants• Bagging scales• Single component scales• Multi-component scales• Filling scales with verification capability• Scales for potentially explosive areas (can be implemented by

using an Ex(i) interface).

Principle of operationIn addition to its extensive weighing functions, SIWAREX A also controls fast proportioning operations independent of the auto-mation system’s cycle time. Functions such as coarse or fine proportioning, automatic reproportioning as well as self-optimi-zation permit optimal proportioning accuracy. The two serial interfaces (TTY and RS 232) of the SIWAREX A are used to connect a printer and a remote display, both with verifi-cation capability, or a PC for parameterizing the SIWAREX A. In addition to the two serial interfaces, 4 digital outputs, 3 digital inputs and an analog output are available on the module.The high degree of flexibility means that filling and bagging sys-tems can be implemented with different performance levels. A wide range of automation components (e.g. line-oriented or graphical operator panels, powerful CPU modules, or additional I/Os) is available to meet individual requirements. The scales can be parameterized and controlled using an oper-ator panel which has been configured for plant visualization. Ini-tial parameterization can also be carried out using the SIWATOOL A PC program independent of the SIMATIC control-ler.Proportioning control determines the weight value with a preci-sion of 0.01% and an internal resolution of one million parts and controls the time-critical proportioning signals for coarse and fine flow with a precision of 1 ms. During proportioning, the coarse flow and fine flow switch-off points are continuously opti-mized. Optimization of both switch-off points not only ensures fil-ling that can be precisely verified but also a rapid proportioning process and therefore high plant throughput.For optimization of the switch-off points, several self-adapting controllers are available in proportioning control. These allow fluctuations in material flow as well as variations in material den-sities to be detected and compensated.Irregularities in proportioning are evaluated using statistical techniques and therefore do not have a negative effect on opti-mization of subsequent proportioning procedures.Since proportioning control has a total of three operating modes, it can be used for a wide variety of applications:• Filling mode• Palletizing mode• Loading mode.

Design

SIWAREX A is a compact function module (FM) of the SIMATIC S7-300 and can be snapped directly onto the SIMATIC S7-300 backplane bus. Direct integration into the automation system permits complete integration of weighing and proportioning functions into the SIMATIC S7-300. Moreover, the weighing mod-ule can be connected to PROFIBUS-DP via the modular ET 200M I/O system and can thus be operated as a distributed I/O for the SIMATIC S7.

SIWAREX A can be integrated into plant software using the clas-sic PLC programming languages STL (Statement List), LAD (Ladder Diagram) and FBD (Function Block Diagram).

Uniform communication between all system components per-mits fast, reliable and cost-effective integration into process engineering plants. In contrast to weighing electronics linked via a serial interface, costly additional modules for linking the mod-ules to the SIMATIC system are not required with SIWAREX A. Assembly and wiring are also greatly simplified by using rails with snap-on technology. Through the integration into SIMATIC, user-programmable modular weighing systems are available that can be adapted as desired to the customer's requirements.



SIWAREX A has already been adjusted at the factory. This makes it possible to replace modules without having to re-adjust the scales (not permissible with measurements requiring verifi-cation). The weighing module can also be used in potentially explosive areas (zones 1 and 2). Here, intrinsically-safe power-ing of the load cells is ensured with an optional Ex(i) interface.

SIWAREX A proportioning control at a glance7 Proportioning module for automatic scales for weighing7 Approved for resolutions with verification capability up to

6000d or 2 x 6000d (multi-range or multi-interval scales, 2 ranges)

7 Internal measured value resolution of one million parts7 3 operating modes: filling/loading/palletizing7 Switch-off accuracy better than 1 ms7 2 filling speeds7 Material-flow-dependent compensation for coarse and fine

flow7 Storage of up to 31 fill parameter records directly in

the weighing module (e.g. switch-off points, tolerances, disabling times, preselection counters, total quantities, balances, etc.)

7 Automatic optimization of proportioning with regard to time and precision (e.g. dribbling time controller, dribbling weight controller, proportioning time controller, etc.)

7 Disabling setpoint/actual-value comparators for plants with material that is difficult to proportion

7 Automatic weighing checks with evaluation of fill weight and calculation of mean value and standard deviation

7 Weighing logs with test printout, fill results, start logs and end logs, etc. (printer as an option)

Siemens WT 01 · 2002 2/5

Weighing electronicsDescription

SIWAREX A and P

Application case SIWAREX AWS

Proportioning control for filling and bagging plants is used for weighing free-flowing solid materials and liquids with maximum accuracy and speed. It is used wherever materials (e.g. granu-late, grain or cement) have to be weighed.

The system is entirely made up of standard components and can be used as compact electronics.

The required software is already included in the SIWAREX A configuring package, and must be downloaded into the OP7 operator panel and into the SIMATIC CPU.

The system has been assigned an EC-Type Examination Certifi-cate as a non-automatic commercial scale, and national approval as a automatic scale for weighing operations.

Design

The standard configuration of the SIWAREX AWS proportioning control consists of:

• SIWAREX A weighing electronics• SIMATIC S7 programmable controller (e.g. CPU 312 IFM)• SIMATIC HMI OP7 operator panel • Software for the OP7 configured using ProTool• Standard software, created in STEP 7 (i.e. can be modified or

expanded).


The scales are parameterized and controlled via the operator panel.

The parameters are divided into groups, and are selected by the operator using menu prompting. Fill parameters for up to 31 components are specified in plain text.

Commands are entered using the function keys. During filling operations, the current weight and the filling status are output on the display.

The SIWAREX A determines the weight value with a precision of 0.01% and an internal resolution of one million parts and controls the time-critical proportioning signals for coarse and fine flow with a precision of 1 ms. During proportioning, the coarse flow and fine flow switch-off points are continuously optimized. Opti-mization of both switch-off points not only ensures filling that can be precisely verified but also a rapid proportioning process and therefore high plant throughput.

Application of SIWAREX P

SIWAREX P is a weighing and force measuring system for simple tasks. It can be used for all kinds of industrial measurements.

SIWAREX P is particularly suitable for:

• Measuring the contents of containers and bins and monitoring limits

• Overload protection equipment for cranes, excavators and industrial elevators

• Belt tension measuring devices• Scales in potentially explosive areas (can be implemented by

using an Ex(i) interface).

Design

SIWAREX P is based on the design of the SIMATIC S5-100U and can be operated either as a stand-alone unit or directly integra-ted into a SIMATIC S5-90U, SIMATIC S5-95U or SIMATIC S5-100U programmable controller. A distributed link is possible via the ET 200U I/O system.

The weight value is displayed on the front LCD and is also availa-ble as an analog signal. The current values can also be read out via a serial interface. Two limits can be monitored via relay out-puts.


Parameterization and adaptation to the load cells (characteristic value, nominal load) is simple and is carried out in interactive mode using a 16-character-wide LCD and 6 membrane keys.

The operator is prompted through the parameterization menu. The setting parameters are displayed in plain text, making it pos-sible to perform parameterization without having to refer to the product manual.

Once the data have been entered they are stored in an EEPROM to protect them against power failure. Parameterization can be protected by a code against unauthorized access.

SIWAREX P can be adjusted by using a control weight.

At the end of the adjustment, SIWAREX P switches over into ope-rational mode. The LCD displays the current weight together with the weight unit. Status texts are displayed in the event of a fault.

Siemens WT 01 · 20022/6


SIWAREX U, M, A and P

Technical specifications

Type SIWAREX U SIWAREX M SIWAREX A SIWAREX P

Main applications• Load measurement on cranes• Overload protection• Belt tensioning devices• Platform scales• Fill level meas. (containers/bins) • Proportioning and mixing scales• Scales with verification capability

7

7

7

7

7

––

–––7

7

7

7

––––7

7

7

7

7

7

7

7

––

Intrinsically-safe load cell powering Optional (Ex-I) Optional (Ex-I) Optional (Ex-I) Optional (Ex-I)Stand-alone (without SIMATIC) With IM 153-1 7 7 7

Integration in:S5-90/-95U/-100US5-95U/DP (PROFIBUS master)S5-115U/-135U/-155US7-300S7-400PCS 7M7-300M7-400C7TELEPERM M (AS 388/488/TM)

–Via ET 200MVia ET 200MDirect integrationVia ET 200MVia ET 200MDirect integrationVia ET 200MVia IM or ET 200M–

Via RS 232/TTY + CPVia RS 232/TTY + CPVia ET 200M Direct integrationVia ET 200MVia ET 200M––Via IM or ET 200MVia ET 200M

–––Direct integrationVia ET 200M–––Via IM or ET 200M–

Direct integrationVia ET 200UVia ET 200U Via ET 200UVia ET 200U–Via ET 200UVia ET 200UVia ET 200U–

Communication interfaces SIMATIC S7 (P bus)RS 232

SIMATIC S7 (P bus)RS 232, TTY

SIMATIC S7 (P bus)RS 232, TTY

SIMATIC S5 busTTY

Process interfaces– Digital inputs– Digital outputs– Pulse input– Analog output/analog input

–––– / –

3 (assignable)4 (assignable)–7 / –

34–7 / –

–2 limits/fault–7 / –

Remote display connection(via serial interface)

7

Gross, channel 1, 2Specified value 1, 2

7 (verification capability)Gross/net/setpointRemote display with operator control

7 (verification capability)Gross/net

7

Gross

Printer connection – 7 (verification capability) 7 (verification capability) –

Measuring propertiesClass III EU type approval for commercial scales (with verification capability)

– 6000 d 6000 d (2 x 6000 d) –

Accuracy (definition in acc. with measuring technology)

0.05% 0.01% 0.01% 0.1%

nIND in acc. with EN 45 501Min. measuring signal ∆Umin pro d(*) no verification capability

3000 (*)1.5 µV

60000.5 µV

60000.5 µV

–

Internal resolutionData format for weight values

65535 2 bytes (fixed point)

± 5242884 bytes (fixed point)



No. of measurements/second 50 50 50 10

Filters Exponent filter: 0.05 to 5 HzMean value filter

Exponent filter: 0.05 to 5 HzMean value filter

Mean value filter, 4 stages 0.0625–2 Hz

Scale functions• Weight values• Limits• Scales standstill• Zero setting function

Gross weight2 (min./max.)–Via command

Gross/net/tare4 (min./max./empty/overfill)7

Via command or automatically

Gross/net–7

Via command or automatically

Gross weight2 (min./max.)––

Proportioning functions• Control of coarse/fine flow valves• Tolerance monitoring• Material flow monitoring• Autom. proportioning optimization• Automatic reproportioning• Inching mode

––––––

7

7

7

7

7

7

7

7

7

7

7

7

––––––

Integral display and operator panel – – – 7

Module parameterization Via SIMATIC S5/S7/M7/C7 or SIWATOOL U PC para-meterization software

Via SIMATIC S5/S7/C7or SIWATOOL M PC para-meterization software

Via SIMATIC S7or SIWATOOL A PC para-meterization software

Built-in LCD+membrane keypad

UL/CSA/FM approval 7 7 – –

IP degree of protection to DIN EN 60 529, IEC 60529

IP 20 In S7 frame: IP 20Stand-alone: IP 10

In S7 frame: IP 20Stand-alone: IP 10

IP 20

7 Function included– Function not included

Siemens WT 01 · 2002 2/7

Weighing electronicsTechnical specifications

SIWAREX U, M, A and P

Type SIWAREX U SIWAREX M SIWAREX A SIWAREX P

Load cell supply:• Supply voltage Us (rated value)• Max. supply current

• Permiss. load resistance:RLmin(per weighing channel)

RLmax

RLminRLmax

DC 10.3 V≤ 240 mA single-channel≤ 120 mA two-channel> 41 Ω single-channel> 82 Ω two-channel< 4010 ΩWith Ex(i) interface:> 87 Ω< 4010 Ω

DC 10.2 V≤ 180 mA –> 60 Ω–< 4010 ΩWith Ex(i) interface:> 87 Ω< 4010 Ω

DC 10.2 V≤ 180 mA –> 60 Ω–< 4010 ΩWith Ex(i) interface:> 87 Ω< 4010 Ω

DC 10 V ± 0.5 V≤ 160 mA or≤ 115 mA (Ex area)> 60 Ω–< 4010 ΩWith Ex(i) interface:> 87 Ω< 4010 Ω

Perm. load cell characteristic Up to 4 mV/V Up to 4 mV/V Up to 4 mV/V Up to 3 mV/V

Perm. range of measurement signal (with largest characteristic value set)

-1.5 to +42.5 mV -41.5 to +41.5 mV -41.5 to +41.5 mV -33 to +33 mV

Max. distance of load cells 1000 m(300 m in Ex area1))

1000 m(300 m in Ex area1))

1000 m(300 m in Ex area1))

500 m(300 m in Ex area)

Voltage supply DC 24 V• Rated voltage• Max. current consumption

DC 24 V220 mA

DC 24 V300 mA

DC 24 V300 mA

DC 24 V300 mA

Voltage supply from backplane bus Typ. 100 mA Typ. 50 mA Typ. 50 mA –

Serial interface 1• Transmission rate• Parity• No. of data bits/stop bits• Signal level• Protocols

RS 232:9600 bpsEven/odd/none8/1In acc. with EIA-RS 232SIWAREX protocol

RS 232:2400/9600 bpsEven/odd8/1In acc. with EIA-RS 232SIWAREX protocol3964RXON/XOFF (printer) 2)

RS 232:2400/9600 bpsEven/odd8/1In acc. with EIA-RS 232SIWAREX protocolXON/XOFF (printer) 2)

TTY (serial 20 mA):9600 bpsEven8/1Passive, floating3964R / RK512(send only on request)

Serial interface 2• Transmission rate• Parity• No. of data bits/stop bits• Signal level• Protocols

TTY:9600 bpsEven/odd/none8/1Passive, floatingRemote display protocol for digital remote displays

TTY:9600 bpsEven8/1Active/passive (floating)Remote display protocolSIWAREX protocol3964R

TTY:9600 bpsEven8/1Active/passive (floating)Remote display protocolSIWAREX protocol

–

Binary inputs – Number: 3Rated voltage: 24 VSwitching frequency: 10 Hz

Number: 3Rated voltage: 24 VSwitching frequency: 10 Hz

–

Binary outputs – Number: 4 (digital)Rated voltage: 24 VRated current: 0.5 ATotal max.: 1 AIsolation: 500 V

Number: 4 (digital)Rated voltage: 24 VRated current: 0.5 ATotal max.: 1 AIsolation: 500 V

Number: 2 (relay)Max. switching voltage: DC 120 VAC 50 Vmax. current: 1 A(resistive load)

Analog output• Output range• Total error at 25 °C• Update rate• Resolution• Burden including line resistance

– 0/4 to 20 mA0.15 %Approx. 350 ms16 bits (0 to 20 mA)≤ 600 Ω

0/4 to 20 mA0.15 %Approx. 350 ms16 bits (0 to 20 mA)≤ 600 Ω

0/4 to 20 mA0.45 %100 ms10 bits (0 to 20 mA)≤ 500 Ω

Climatic requirementsTmin (IND) to Tmax (IND)(operating temperature)

Vertical installation:0 to +60 °C Horizontal installation:0 to +40 °C

Vertical installation:–10 to +60 °C Horizontal installation/ with verification capability:–10 to +40 °C

Vertical installation:–10 to +60 °C Horizontal installation/ with verification capability:–10 to +40 °C

0 to +55 °C in wall housing:0 to +45 °C

EMC requirements in accordance with

NAMUR NE21, Part 189/386/EEC

NAMUR NE21, Part 190/384/EEC89/386/EEC

NAMUR NE21, Part 190/384/EEC89/386/EEC

EN 50081-2EN 50082-2

MTBF (SN 29500) > 350 000 h > 172 000 hat +40 °C

> 172 000 hat +40 °C

–

1) Up to 1000 m, depending on the gas group2) Serial printer, ANSI-, EPSON-, IBM-compatible

Siemens WT 01 · 20022/8


SIWAREX JBjunction and distribution box

Accessories

Application

The JB junction and distribution box is required for parallel con-nection of load cells, and as a connection or extension for diffe-rent or special measuring cables. Four load cells can be con-nected in parallel in one junction box.

If more than 4 load cells are to be connected, a second junction box must be connected in parallel via a cross connection. The junction box can be used in potentially explosive areas (groun-ded, intrinsically-safe circuits).

Design

The junction and distribution box made of die-cast aluminum consists of a base section and a cover. The housing is sealed against penetration of dust and splashed water in accordance with IP 66 degree of protection. The cables enter the casing via metric cable glands. In the housing, there are 28 terminals with spring-mounted contacts. The spring-mounted system results in vibration-resistant, maintenance-free connections.

The internal resistance, characteristic value and nominal load of all load cells connected in parallel must be identical. The values of these variables are not limited by the junction box. Load cells can be connected using a four-wire or six-wire system.

With the four-wire system, two jumpers must be set in addition.

1) Drilled holes for mounting of housing

SIWAREX JB junction and distribution box (7MH4 710-1BA), dimensions

Connection examples

4 load cells

LC: load cell JB: junction box

8 load cells

LC: load cell JB: junction box


Cable glands• Load cells• Electronics

4 x M162 x M20

Permissible ambient temperature• During operation• During operation for commercial

scales with verification capability• During transportation and storage

-30 to +85 °C

-10 to +40 °C-40 to +90 °C

Degree of protection IP 66 to EN 60 529

Vibration resistance of terminals to DIN VDE 0611 11/77

12 Hz and 50 Hz, amplitude 1 mm

Insulation resistance of terminals ≥1012 Ω cm

Siemens WT 01 · 2002 2/9

Weighing electronicsAccessories

Ex interface, types SIWAREX Pi and IS

SIWAREX Pi Ex interface

Application

The SIWAREX Pi Ex interface can be used for the SIWAREX U, SIWAREX M, SIWAREX A and SIWAREX P weighing modules. It contains 6 safety barriers and conforms to explosion protection type [EEx ib] IIC. The Ex interface must be installed outside the potentially explosive area.

See configuration aids for further details.


The safety barriers limit current and voltage in the power, sensor and measuring signal lines of load cells installed in the potenti-ally explosive area.

Function diagram

Electrical connections: 2 PG screwed glands and terminalsHousing material: die-cast aluminium

SIWAREX Pi Ex interface, dimensions

1 Drilled hole with 7 mm diam. fixing screw

SIWAREX IS Ex interface

Application

The SIWAREX IS Ex interface can be used for the SIWAREX U, SIWAREX M, SIWAREX A and SIWAREX P weighing modules. It contains 6 safety barriers and conforms to explosion protection type [EEx ib] IIC. The Ex interface must be installed outside the potentially explosive area. It should be accommodated in the switchgear cabinet, preferably underneath the control electron-ics, and is secured using a 35-mm rail to EN 50 022.

The connection is made at the front using two clamp-type plugs. A separate screw terminal is present for connection of the equipotential bonding conductor (EBC).

See configuration aids for further details.


The function is identical to that of the SIWAREX Pi Ex interface; the principle of operation is as described on the left.

SIWAREX IS Ex interface, dimensions

Siemens WT 01 · 20022/10


Ex interface, types SIWAREX Pi and IS

Accessories


SIWAREX Pi SIWAREX IS SIWAREX IS(low-current version)

Non-intrinsically-safe circuitsWeighing accuracy in combination with:SIWAREX USIWAREX M, SIWAREX ASIWAREX P

0.05% (3000 d)0.01% (6000 d)0.10%

0.05% (3000 d)0.01% (6000 d)0.10%

0.05% (3000 d)0.01% (6000 d)0.10%

Load cell poweringRated voltage Un1

Permissible error voltageInternal resistance of the load cells(Total)

DC 10 VAC 250 V≥ 87 Ω< 4010 Ω

DC 10 VAC 250 V≥ 87 Ω< 4010 Ω

DC 10 VAC 250 V≥ 180 Ω< 4010 Ω

Sensor lineRated voltage Un2

Permissible error voltageDC 10 VAC 250 V

DC 10 VAC 250 V

DC 10 VAC 250 V

Measuring signal lineRated voltage Un3

Permissible error voltageDC 10 to 40 mVAC 250 V

DC 10 to 40 mVAC 250 V

DC 10 to 40 mVAC 250 V

Intrinsically-safe circuitsLoad cell poweringNo-load voltage U01

Voltage against equipotential bonding cond.Short-circuit current Ik1

≤ DC 13.2 V≤ DC 6.6 V≤ 122 mA

≤ DC 13.2 V≤ DC 6.6 V≤ 120 mA

≤ DC 13.2 V≤ DC 6.6 V≤ 58 mA

Sensor lineNo-load voltage U02


≤ DC 14.4 V≤ DC 7.2 V≤ 25 mA

≤ DC 14.3 V≤ DC 7.2 V≤ 25 mA

≤ DC 14.3 V≤ DC 7.2 V≤ 25 mA

Measuring signal lineNo-load voltage U03


≤ DC 12.6 V≤ DC 6.3 V≤ 72 mA

≤ DC 12.8 V≤ DC 6.4 V≤ 54 mA

≤ DC 12.8 V≤ DC 6.4 V≤ 54 mA

Total connection values (when circuits are connected together)No-load voltage U0

Short-circuit current IkPower Po

≤ DC 14.4 V≤ 219 mA≤ 1.93 W

≤ DC 14.3 V≤ 199 mA≤ 1.835 W

≤ DC 14.3 V≤ 137 mA≤ 1.025 W

For gas group II CMax. permissible external capacitance Ca3

Max. permissible external inductance La

210 nF0.3 mH

500 nF0.15 mH

450 nF0.5 mH

For gas group II BMax. permissible external capacitance Ca3

Max. permissible external inductance La

890 nF1 mH

2000 nF1 mH

2000 nF2 mH

General specificationsHousing dimensionsApprox. weight

See dim. drawing on page 2/92200 g



UL/CSA approval Yes Available soon Available soon Permissible ambient temperature • Operation• Operation with commercial

scales with verification capability• Transport and storage

–10 °C to +70 °C

–10 °C to +40 °C–40 °C to +85 °C

–10 °C to +60 °C 1)

–10 °C to +40 °C 1)

–40 °C to +85 °C

–10 °C to +60 °C 1)

–10 °C to +40 °C 1)

–40 °C to +85 °CPermissible relative humidityDegree of protectionType of explosion protection

≤ 95 %IP 54Intrinsic safety "i"[EEx ib] II CFM Class I Div. 1

≤ 95 %IP 20Intrinsic safety "i"[EEx ib] II C to ATEXFM: available soon

≤ 95 %IP 20Intrinsic safety "i"[EEx ib] II C to ATEXFM: available soon

In combination with SIWAREX P, the Ex interface, type Pi, has approval for mining SYST [EEx ib] I BVS 94.C.1105.X

1) For vertical mounting.

Siemens WT 01 · 2002 2/11

Weighing electronicsOrdering data

SIWAREX U, M and A

Ordering data for SIWAREX U Order No.

SIWAREX U weighing electronicsfor SIMATIC S7 and ET 200M,incl. bus connector, weight 0.3 kg• Single-channel version for connecting

one set of scales• Two-channel version for connecting

two sets of scales

7MH4 601-1AA01

7MH4 601-1BA01

SIWAREX U manual• German• EnglishThe manual must be ordered separately.

7MH4 693-3AA117MH4 693-3AA21

SIWAREX U configuration packagefor SIMATIC S5/S7, Version 5.1on CD-ROM• SIWATOOL PC parameterization soft-

ware (German/English/French/Italian)• Example programs• SIWAREX U manual on CD

(in German and English)• Setup for integration of

SIWAREX U in STEP 7

7MH4 683-3AA63

SIWAREX U configuration packagefor PCS 7, Version 4.0in German and English on CD-ROM Block for CFC and faceplate

7MH4 683-3BA61

SIWAREX U configuration packagefor PCS 7, Version 5.0in German and English on CD-ROM Block for CFC and faceplate

7MH4 683-3BA62

Connection from SIWAREX U with serial PC interfaceLength: 3 mFor 9-pin PC ports (RS 232)

7MH4 607-8CA

See page 2/12 for further accessories.

Ordering data for SIWAREX M Order No.

Ordering data for SIWAREX A Order No.

SIWAREX M weighing and batching system with verification capability(Commercial scale, class III, 6000 d) for SIMATIC S7 and ET 200M,incl. bus connector, weight 0.6 kg

7MH4 553-1AA41

SIWAREX M manual• German• EnglishThe manual must be ordered separately.

7MH4 593-3AA117MH4 593-3AA21

SIWAREX M configuration packagefor SIMATIC S5/S7, Version 5.1in German and English on CD-ROM• SIWATOOL PC parameterization soft-

ware• SIMATIC S7 function blocks • SIMATIC S5 function blocks• SIWAREX M manual on CD • Setup for integration of SIWAREX M in

STEP 7

7MH4 583-3FA63

SIWAREX M configuration packagefor PCS 7, Version 4.0in German and English on CD-ROM Block for CFC and faceplate

7MH4 583-3EA61

SIWAREX M configuration packagefor PCS 7, Version 5.0in German and English on CD-ROM Block for CFC and faceplate

7MH4 583-3EA62

SIWAREX BatchRecipe control for proportioning processes with SIWAREX M modules• STEP 7 program for SIMATIC S7

(from CPU 314 onwards)• Example programs for graphical user

interface for OP7 and OP27 (configuring on ProTool)

• Documentation in German and English

7MH4 553-4GS01

SIWAREX Batch follow-up license 7MH4 583-4KL01

Connection from SIWAREX M with serial PC interface• For 9-pin PC port, length 2 m• For 9-pin PC port, length 5 m

7MH4 702-8CA7MH4 702-8CB


SIWAREX A weighing and batching system with verification capabilitywith approval as stand-alone scale for weighing, 6000 d incl. bus connector, weight 0.6 kg

7MH4 421-1AA01

SIWAREX A configuration packagefor SIMATIC S7, Version 5.1in German and English on CD-ROM• SIMATIC S7 function blocks • Standard software for CPU 312 IFM and

OP7 for SIWAREX AWS• Setup for integration of

SIWAREX A in STEP 7 • SIWAREX A manual

on CD (in German and English)

7MH4 483-3DA63

Connection from SIWAREX Awith serial PC interface• For 9-pin PC port, length 2 m• For 9-pin PC port, length 5 m

7MH4 702-8CA7MH4 702-8CB


Siemens WT 01 · 20022/12


SIWAREX U, M and A

Ordering data

Ordering data for SIWAREX U, M, A Order No.

Installation material (absolute requirement)

Front connector for SIWAREX U, M, A20-pin, with screw contacts (required per SIWAREX module)

6ES7 392-1AJ00-0AA0

Shield connection elementA shield connection element is sufficient for: • two SIWAREX U modules or • one SIWAREX M or SIWAREX A module

6ES7 390-5AA00-0AA0

Shield connection terminals Contents: two(suitable for 1 cable with a diameter of 4 to 13 mm)

6ES7 390-5CA00-0AA0

Note:One shield connection terminal each is required for the:• Load connection • TTY interface• RS 232 interface• Analog output• Digital I/Os

DIN rails• 160 mm• 480 mm• 530 mm• 830 mm• 2000 mm

6ES7 390-1AB60-0AA06ES7 390-1AE80-0AA06ES7 390-1AF30-0AA06ES7 390-1AJ30-0AA06ES7 390-1BC00-0AA0

Accessories (optional)

PS 307 load power suppliesincl. power connector;AC 120/230 V; DC 24 V• PS 307-1B; 2A• PS 307-1E; 5A• PS 307-1K; 10A(only required if 24 V DC is not available)

6ES7 307-1BA00-0AA06ES7 307-1EA00-0AA06ES7 307-1KA00-0AA0

Labelling strips(10, spare part)

6ES7 392-2XX00-0AA0


Cables and connectors(optional)

Sub-D connector, 9-pin (female)Quantity: 1 For PC interface (RS 232)

6ES5 750-2AB11

Sub-D connector, 9-pin (male) Quantity: 1 for RS 232 interface of the SIWAREX M

6ES5 750-2AA11

Sub-D connector, 15-pin (male) Quantity: 1 • For TTY interface of the SIWAREX M• For BD14 M remote display

6ES5 750-2AA21

Sub-D connector, 25-pin (male) Quantity: 1 • For printer interface (RS 232)

6ES5 750-2AA31

Sub-D connector, 25-pin (female) Quantity: 1 • For PC interface (RS 232)

6ES5 750-2AB31

Cable LiYCY 4 x 2 x 0.25 mm²for TTY or RS 232 interface(if the cable is used for the TTY interface, two cable pairs must be connected in parallel)

7MH4 407-8BD0

Siemens WT 01 · 2002 2/13

Weighing electronicsOrdering data

SIWAREX U, M and A


Remote displays (optional)

Remote displaysDigital remote displays can be connected directly to the SIWAREX U, SIWAREX M or SIWAREX A using a TTY interface.Available remote displays:For SIWAREX U and M:S10, SX10, S30, S70 (with option 97/16)S300Only for SIWAREX M:S11 (verification capability), S310 (verifi-cation capability)Only for SIWAREX AS11 (verification capability)

Siebert Industrieelektronik GmbHP. O. Box 1180D-66565 EppelbornTel.: 06806/980-0Fax: 06806/980-999Internet: http://www.siebert.de

Contact the manufacturer.for detailed information

Remote displays (with operator function)FA digital remote displays can be connected directly to the SIWAREX U or SIWAREX M using a TTY interface. An RS 232 or a TTY interface is possible for the BD14 M digital remote display.Available remote displays:For SIWAREX U and M:FA14, FA20For SIWAREX U and M:together with Siemens mosaic grids M25 and M50 × 25(grid dimension 25 × 25 mm): FA7Only for SIWAREX M:with operator function: BD14 M

Link-electronics GmbHBahnhofstr. 18D-76764 RheinzabernTel.: 07272/7000-0Fax: 07272/7000-27Internet: http://www.link-electronics.de

Contact the manufacturer.for detailed information.

Remote display accessories

Sub-D connector, 15-pin (male) Quantity: 1 • For TTY interface of the SIWAREX M • For BD14 M remote interface

6ES5 750-2AA21

Note:1 connector is required for S10 to S310, FA, BD14 M2 connectors are required if BD14 M is to be connected to TTY interface of the SIWAREX M.

Sub-D connector, 9-pin (male) Quantity: 1, for RS 232 interface of the SIWAREX M

6ES5 750-2AA11

Note: 1 connector is required if BD14 M is to be connected to the RS 232 interface of the SIWAREX M.


Ordering data for SIWAREX M, A Order No.

Remote display accessories (continued)


7MH4 407-8BD0

Memory with verification capability The OmniScale memory with verification capability can be connected to the SIWAREX M instead of the printer.2 versions are available: • For rail mounting

- Horizontal Art. 522 201- Vertical Art. 522 202

CSM GmbHRaiffeisenstr. 34D-70794 FilderstadtTel.: 0711/77964-20Fax: 0711/77964-40Internet: http://www.csm.deContact the manufacturer.for detailed information.

Printer (optional)

DR 2030/24 printerDot-matrix printer, 24 needles,DIN A4 and continuous formNote:An RS 232 interface must be ordered in addition.

6GF6520-1LB

RS 232 interface for DR 2030/24 6GF6520-2HA

See Catalog KT61 for further printers

Printer accessories

SIWAREX M link to serial printer interface (RS 232, 25-pin)• Length 5 m• Length 10 m

7MH4 702-8CH7MH4 702-8CK

Sub-D connector, 9-pin (male) Quantity: 1 for RS 232 interface of the SIWAREX M

6ES5 750-2AA11

Sub-D connector, 25-pin (male) Quantity: 1 for printer interface (RS 232)

6ES5 750-2AA31


7MH4 407-8BD0

Note: Cables and Sub-D connectors are only required if the 7MH4 702-8CH or 7MH4 702-8CK pre-assembled cable is not used.

Siemens WT 01 · 20022/14


SIWAREX P, accessories for SIWAREX U, M, A and P

Ordering data

Ordering data for SIWAREX P Order No.

SIWAREX P weighing and force measuring system• For stand-alone mode without SIMATIC• For operation inside a

SIMATIC S5-90U/-95U/-100U pro-grammable controller and ET 200U

7MH4 205-1AB017MH4 205-1AC01

SIWAREX P manual(must be ordered separately)• German• English

C71000-B5900-C44C71000-B5976-C44

Data handling block (FB)For communication between the SIWAREX P weighing and force measuring system and an SIMATIC S5-90U/-95U/-100U pro-grammable controller, including descrip-tion in German and English

7MH4 811-5AP41

Bus moduleTerminal block for screw connections(required for each SIWAREX P)

6ES5 700-8MA11

PS931 power supplyFor AC 115/230 V, DC 24 V; 2 A

6ES5 931-8MD11

Wall housingFor max. 2 SIWAREX P weighing and force measuring systems and one PS391 power supply module

7MH4 215-8AA

S70 remote displayThe digital remote display can be connected directly to the SIWAREX P using a TTY interface.Available remote displays:S70-0351R-S4-BS70-0350R-S4

Siebert Industrieelektronik GmbHP.O. Box 1180D-66565 EppelbornTel.: 06806/980-150Fax: 06806/980-111Internet: http://www.siebert.de

Ordering data for SIWAREX U, M, A, P Order No.

Accessories for SIWAREX U, M, A, P

SIWAREX JB junction and distribution boxfor parallel connection of load cells or for extending measuring cables

7MH4 710-1BA

SIWAREX Pi Ex interfacefor intrinsically-safe connection of load cells, suitable for the SIWAREX U, M, A and P weighing modules.

7MH4 710-5AA

Ex interface Ex-I manual C71000-T5974-C29

SIWAREX IS Ex interface• With short-circuit current < DC 199 mA• With short-circuit current < DC 137 mAfor intrinsically-safe connection of load cells, suitable for the SIWAREX U, M, A and P weighing modules.

7MH4 710-5BA7MH4 710-5CA

Cable Li2Y(ST)CY 6 x 0.75 mm²for connecting SIWAREX U, M, P, A to junction and distribution box (JB) or Ex interface (Ex-I) as well as between two JBs, for permanent on-site installation; occasional bending possible10.3 mm outer diameter,for ambient temperature –20 to +70°C

7MH4 702-8AB

Cable Li2Y(ST)CY 6 x 0.75 mm², with blue sheathConnection of junction and distribution box (JB) in an area subject to explosion hazards and Ex interface (Ex-I), for perma-nent on-site installation; occasional ben-ding possible, blue PVC insulating sheath, approx. 10.3 mm outer diameter, for ambi-ent temperature –20 to +70°C

7MH4 702-8AA

Cable LiYCY 4 x 2 x 0.25 mm²for TTY or RS 232 interface(if the cable is used for the TTY interface, two core pairs must be connected in parallel)

7MH4 407-8BD0

Siemens WT 01 · 2002 3/1

3/2 Description3/2 SIWAREX R load cells3/3 Mounting components

3/4 Technical specifications3/4 Load cells

BB; CC; K series3/5 RN; SB series

3/6 Ordering data3/6 Load cells

BB; SB; RN; CC; K series3/7 Mounting components

BB; SB series3/8 RN series3/9 RN; K; CC series

Load cells and mounting components

3/2 Siemens WT 01 · 2002


SIWAREX R

Description


Load cells

SIWAREX R load cells are equipped with strain gauges. They are used for static and dynamic weight measurements.

The range of SIWAREX R load cells covers rated loads from 10 kg to 280 t.

The variety of modules available and their outstanding charac-teristics, including

• the use of stainless steel components to provide a high degree of corrosion protection1),

• hermetically sealed housing to permit use even in harsh and aggressive environments1) and

• compact modules for easy installation,

make SIWAREX R load cells suitable for virtually all applications in industrial weighing, e.g. container and hopper scales, plat-form scales, vehicle scales, hybrid scales etc.

All series with the exception of the K series have been approved for use with Class III commercial scales requiring verification in accordance with DIN EN 45 501 and conform to OIML R60 3000d.

Load cells can also be supplied for other rated loads, higher accuracy, and/or with EEx (i) approval.

1) Not with K series.

Design and principle of operation

Strain gauge load cells are mechanical-electrical converters. Although various model series exist, the basic principle of oper-ation is the same for all.

The basic element is a special spring body which deforms elas-tically when subjected to a weight, causing the integral strain gauges to change their resistance.

This in turn causes a change in the output voltage that is propor-tional to the change in weight.

Siemens WT 01 · 2002 3/3

Load cells and mounting componentsDescription

SIWAREX R

Mounting components

Standardized SIWAREX R mounting components are always precisely adapted to the requirements of the individual load cell series. This ensures that the force to be measured is directed to the load cells in the best possible way.

Since use of SIWAREX R mounting accessories prevents incor-rect loading of the load cells (e.g. eccentric load transfer, tor-sional torques etc.), the measuring accuracy of the load cells can be fully utilized.

The wide variety of mounting components permits all primary applications of industrial weighing technology to be imple-mented. In addition to the mounting components already men-tioned, a wide range of special accessories is available for spe-cial requirements.

Self-aligning bearing for load cells of the CC, K and RN series

The self-aligning bearing for the CC series consists of three force guiding pieces, a base plate and a top plate.

Two pressure plates are used for load cells of the K series.

The self-aligning bearing for the RN series consists of a base plate, a top plate and a self-aligning bolt.

Since these components, in combination with the load cell, form a complete self-centering unit, the top plate or top pressure plate is able to follow horizontal displacements of the load bearing implement (e.g. caused by temperature expansion) with a swiv-eling movement.

Combination mounting unit for load cells of the BB, CC, RN and SB series

The function of the combination mounting unit corresponds to that of the self-aligning bearing. In addition, the functions for oscillation limitation and lift-off protection are directly integrated in the mounting unit. Oscillation limitation reliably prevents dam-age to the load cell by excessive horizontal displacement, while lift-off protection prevents inadmissible lifting movement of the load support.

Base plate with overload protection for load cells of the BB and SB series

This mounting unit permits function-adapted and torque-adapted installation of these load cell series. The integral over-load protection ensures that the load cell is not permanently damaged by static overload.

Elastomer bearings for load cells of the BB, RN and SB series

Self-centering elastomer bearings are ideal load transfer ele-ments for scales without guiding elements. They are also used to damp mechanical oscillations and dynamic shocks.

Guide element for the combination mounting unit for load cells of the RN and SB series

The additive lateral guide rod consists of 2 flexible heads, a spacer and two flanges, and can be directly screwed to combi-nation mounting units. This permits lateral forces to be absorbed and redirected to the foundation.

Lateral forces occur e.g. during mixing operations with container scales or when the material to be weighed with roller table scales creates acceleration forces.

Depending on the individual requirements and mechanical design of the scales, other guide elements that are precisely matched to specific mounting conditions are available on request (e.g. round-head bolt guides).

Grounding cable

The flexible grounding cable is used to discharge parasitic cur-rents (e.g. created by welding or overvoltage).

Siemens WT 01 · 20023/4


SIWAREX R - load cells



BB series CC series K series

Possible applications Container, conveyor and platform scales

Container, hopper and vehicle scales

Container and hopper scales

Type Bending beam Pressure force Pressure force

Rated load/maximum load Emax. 10/20/50/100/200/350 kg

10/25/40/60 t 100 t 2.8/6/13/28/60/130/280 t

Accuracy class according to OIML R60

C3 C3 C1 0.1 %

Max. scale interval nLC 3000 3000 1000

Min. scale interval Vmin Emax./15000 Emax./12500 Emax./10000

Minimum application range Rmin(LC) 20 % 24 % 10 %

Combined error FcombDeviation Fv

≤ ± 0.02 % Cn≤ ± 0.01 % Cn

≤ ± 0.02 % Cn≤ ± 0.01 % Cn

≤ ± 0.03 % Cn≤ ± 0.02 % Cn

< 0.1 % Cn–

Return of zero signal ≤ ± 0.0167 % Cn1) ≤ ± 0.0167 % Cn

1) ≤ ± 0.05 % Cn1) –

Creepage error Fcr• 30 min• 20 to 30 min

≤ ± 0.0245 % Cn1)

≤ ± 0.0053 % Cn1)

≤ ± 0.0245 % Cn1)

≤ ± 0.0053 % Cn1)

≤ ± 0.049 % Cn1)

≤ ± 0.0105 % Cn1

––

Temperature coefficient• Zero signal TKo• Characteristic value TKc

≤ ± 0.0045 % Cn/5 K≤ ± 0.0045 % Cn/5 K

≤ ± 0.0056 % Cn/5 K≤ ± 0.0045 % Cn/5 K

≤ ± 0.007 % Cn/5 K≤ ± 0.0085 % Cn/5 K

≤ ± 0.25 % Cn/5 K≤ ± 0.25 % Cn/5 K

Min. initial loading Emin ≥ 0 % Emax. ≥ 0 % Emax. ≤ 0 % Emax.

Max. work load LuBreak load LdMax. lateral load Llq

150 % Emax.300 % Emax.100 % Emax.

150 % Emax.400 % Emax.

10 % Emax.

120 % Emax.300 % Emax.

10 % Emax.Rated measuring path hn at Emax 0.3 ± 0.03 mm Max. 0.36 mm 0.23 mm to 2.67 mm

Overload protection – – –

Supply voltage Usr(reference value)

10 V 10 V 6 V

Supply voltage (range) 5 to 15 V 5 to 25 V 6 to 12 V

Rated characteristic value Cn 2 mV/V 2 mV/V 1.5 mV/V

Tolerance Dc of characteristic value ± 1 % ± 1 % ± 0.5 %

Tolerance Do of zero signal ≤ ± 1.0 % Cn ≤ ± 1.0 % Cn ≤ ± 1.5 % Cn

Input resistance Re 460 Ω ± 50 Ω 450 Ω ± 4.5 Ω Approx. 275 Ω

Output resistance Ra 350 Ω ± 3.5 Ω 480 Ω ± 4.8 Ω 245 Ω ± 0.2 Ω

Insulation resistance Ris ≥ 5000 MΩ ≥ 5000 MΩ ≥ 20 MΩ

Rated temperature range Btn –10 to +40 °C –10 to +40 °C –10 to +60 °C

Operating temperature range Btu –40 to +80 °C –40 to +80 °C –20 to +70 °C

Storage temperature range Bts –40 to +90 °C –40 to +90 °C –30 to +80 °C

Sensor material (DIN)

Degree of protection to DIN EN 60 529, IEC 60 529

Stainless steel,mat. no. 1.4542

IP 66/IP 68


IP 66/IP 68

Steel, painted

IP 65Max. tightening torque of the fixing screws 23 Nm – –Current calibration2) Standard Standard –

EEx (i) certification3) EEx ib ll C T6 EEx ib II C T6 4) –

1) For rated temperature –10 to +40 °C2) Current calibration: nominal characteristic value and output resistance are adjusted so that the output current is

calibrated within 0.05 % of a reference value. This makes it easier to connect several load cells in parallel.3) Optional4) EEx(d) version on request (only 40/60 t)

Siemens WT 01 · 2002 3/5

Load cells and mounting componentsTechnical specifications



RN series SB series

Possible applications Container, conveyor, platform and roller table scales

Container, conveyor, overhead rail and platform scales

Type Bending ring Shear beam

Rated load/maximum load Emax. 0.06/0.13/0.28 t 0.5/1/2/3.5/5/10 t 13/28/60 t 0.5/1/2/5 t

Accuracy class according to OIML R60

C3 C3 C3 C3

Max. scale interval nLC 3000 3000 3000 3000

Min. scale interval Vmin Emax./17500 Emax./10000 Emax./17500 Emax./10000

Minimum application range Rmin(LC) 17 % 30 % 17 % 30 %

Combined error FcombDeviation Fv

≤ ± 0.018 % Cn≤ ± 0.01 % Cn

≤ ± 0.023 % Cn≤ ± 0.01 % Cn

≤ ± 0.018 % Cn≤ ± 0.01 % Cn

≤ ± 0.02 % Cn≤ ± 0.01 % Cn

Return of zero signal ≤ ± 0.0167 % Cn1) ≤ ± 0.0167 % Cn

1) ≤ ± 0.0167 % Cn1) ≤ ± 0.0167 % Cn

1)

Creepage error Fcr• 30 min• 20 to 30 min

≤ ± 0.0245 % Cn1)

≤ ± 0.0053 % Cn1)

≤ ± 0.0245 % Cn1)

≤ ± 0.0053 % Cn1)

≤ ± 0.0245 % Cn1)

≤ ± 0.0053 % Cn1)

≤ ± 0.0245 % Cn1)

≤ ± 0.0053 % Cn1)

Temperature coefficient• Zero signal TKo• Characteristic value TKc

≤ ± 0.007 % Cn/5 K≤ ± 0.0045 % Cn/5 K

≤ ± 0.007 % Cn/5 K≤ ± 0.0045 % Cn/5 K

≤ ± 0.007 % Cn/5 K≤ ± 0.0045 % Cn/5 K

≤ ± 0.007 % Cn/5 K≤ ± 0.0045 % Cn/5 K

Min. initial loading Emin ≥ 0 % Emax. ≥ 0 % Emax. ≥ 0 % Emax. ≥ 0 % Emax.Max. work load LuBreak load LdMax. lateral load Llq

200 % Emax.500 % Emax.

75 % Emax.

150 % Emax.300 % Emax.100 % Emax.

150 % Emax.300 % Emax.

75 % Emax.

150 % Emax.300 % Emax.100 % Emax.

Rated measuring path hn at Emax 0.07 mm 0.1 ± 0.02 mm 0.17 – 0.2 mm ≤ 0.5 mmOverload protection Integrated Integrated Integrated for 13 t –Supply voltage Usr(reference value)

15 V 10 V 15 V 10 V

Supply voltage (range) 5 to 30 V 5 to 30 V 5 to 30 V 5 to 18 VRated characteristic value Cn 1 mV/V 2 mV/V 2 mV/V 2 mV/VTolerance Dc of characteristic value ± 0.1 % ± 0.075 % ± 0.1 % ± 1 %Tolerance Do of zero signal ≤ ± 1.0 % Cn ≤ ± 1.0 % Cn ≤ ± 1.0 % Cn ≤ ± 1.0 % Cn

Input resistance Re 1260 ± 100 Ω 1110 ± 50 Ω13 t 1200 ± 100 Ω 28 t 1075 ± 100 Ω60 t 1350 ± 100 Ω

350 Ω ± 3.5 Ω

Output resistance Ra 1020 ± 0.5 Ω 1025 ± 25 Ω13 t 1000 ± 0.5 Ω 28 t 930 ± 0.5 Ω60 t 1175 ± 0.5 Ω

350 Ω ± 3.5 Ω

Insulation resistance Ris ≥ 20 MΩ ≥ 5000 MΩ ≥ 20 MΩ ≥ 5000 MΩ

Rated temperature range Btn –10 to +40 °C –10 to +40 °C –10 to +40 °C –10 to +40 °COperating temperature range Btu –30 to +85 °C –30 to +70 °C –30 to +85 °C –40 to +80 °CStorage temperature range Bts –50 to +95 °C –50 to +80 °C –50 to +95 °C –40 to +90 °CSensor material (DIN)

Degree of protection to DIN EN 60 529, IEC 60 529


IP 68


IP 66/IP 68


IP 68


IP 66/IP 68Max. tightening torque of the fixing screws

8 Nm 14 Nm (0.5 t to 5 t) – 110 Nm (0.5 to 2 t)540 Nm (5 t)

Current calibration2) Standard Standard Standard StandardEEx (i) certification3) EEx ib II C T6 EEx ib II C T6 EEx ib II C T6 EEx ib II C T6

1) For rated temperature –10 to +40 °C2) Current calibration: nominal characteristic value and output resistance are adjusted so that the output current is

calibrated within 0.05 % of a reference value. This makes it easier to connect several load cells in parallel.3) Optional

Siemens WT 01 · 20023/6



Ordering data

Ordering data Order No.

1) Mounting accessories on request.2) Verification capability to OIML R60 up to 1000 d.3) Cables heat-resistant: -60 °C to +180 °C.4) Length tolerance: ±100 mm; cable length 20 m and more ±300 mm.

BB seriesVerification capability to OIML R60 up to 3000 d, connecting cable 3 m (4-wire) 4)

7MH4 103 - C 1

Nominal load: 10 kg20 kg50 kg

100 kg200 kg350 kg1)

2 A2 D2 K3 A3 D3 G

Explosion protection• Without• With degree of protection EEx ib II C T6

for connection to intrinsically-safe circuits

01

SB seriesVerification capability to OIML R60 up to 3000 d, connecting cable 5 m (4-wire) 4)

7MH4 105 - C 1

Nominal load: 500 kg1 t2 t5 t

3 K4 A4 D4 K



01

RN seriesVerification capability to OIML R60 up to 3000 d, connecting cable

(4-wire) 4)

7MH5 101 - D 0

Nominal load: 60 kg Length: 3 m130 kg 3 m280 kg 3 m500 kg 3 m

1 t 3 m2 t 5 m

3,5 t 5 m5 t 5 m

10 t 5 m13 t 10 m28 t 10 m60 t 15 m

2 Q3 D3 J3 P4 A4 G4 L4 P5 A5 D5 J5 Q



01

Ordering data Order No.

CC seriesVerification capability to OIML R60 up to 3000 d, connecting cable

(4-wire) 4)

7MH4 106 - 1

Nominal load: 10 t Length: 10 m25 t 20 m40 t 20 m60 t 20 m

100 t2) 20 m

5 A C5 E C5 H C5 L C6 A A



01

K seriesAccuracy class 0.1, Without explosion protection,

connecting cable3)

(4-wire) 4)

7MH3 105 - B0

Nominal load: 2.8 t Length: 5 m6 t 5 m

13 t 10 m28 t 10 m60 t 10 m

130 t 10 m280 t 10 m

2 A3 A1 B2 B3 B1 C2 C

Siemens WT 01 · 2002 3/7

Load cells and mounting componentsOrdering data

SIWAREX R - mounting components

BB series1) Order No.

1) Load cell is not included in the scope of delivery.2) Base plate is not included in the scope of delivery.3) Combination mounting unit is not included in the scope of delivery.4) To protect the load cell, it is strongly recommendable to use a ground-

ing cable 7MH3 701-1AA1.

Base plate with overload protectionfor BB series load cells1)4) 7MH4 133 - 3DG11

Material: Stainless steelFor load cells with a nominal load of

10 to 200 kg

Elastomer bearingfor BB series load cells1)2)

7MH4 133 - E11

Material: Stainless steel, NeopreneFor load cellswith a nominal load of

10 to 50 kg100 to 200 kg

2 K3 D

Combination mounting unitfor BB series load cells1)4) 7MH4 133 - 3DC11


10 to 200 kg

SB series1) Order No.

Base plate with overload protectionfor SB series load cells1)4)

7MH4 135 - 4 G11


0.5 t, 1 t, 2 t5 t

DK

Elastomer bearingfor SB series load cells1)2)

7MH4 135 - 4 E11

Material: Stainless steel, NeopreneFor load cellswith a nominal load of

500 kg, 1 t2 t5 t

ADK

Combination mounting unitfor SB series load cells1)4)

7MH4 135 - 4 C11


0.5 t, 1 t, 2 t5 t

DK

Guide element for combination mounting unit(only for combination mounting units designed in stainless steel) for SB series load cells1)3)

7MH4 135 - 4 Q12

Consisting of: 2 flanges, 2 pivots, 1 adapter, fixing elementsMaterial: Stainless steelFor load cellswith a nominal load of

0.5 t, 1 t, 2 t5 t

DK

Siemens WT 01 · 20023/8



Ordering data

RN series3) Order No.

1) Load cell is not included in the scope of delivery.2) Self-aligning bearing bottom part is not included in the scope of deliv-

ery.3) To protect the load cell, it is strongly recommendable to use a ground-


Self-aligning bearing top part1)2)

for RN series load cells, consisting of:Top plate with seal holder and seal ring, top plate pressure piece, self-aligning pin, cell pressure piece (not for 28 t and 60 t),

7MH4 115 - B11

Material: Stainless steelFor load cells with a nominal load of:

60 kg, 130 kg, 280 kg10 t, 13 t28 t60 t

3 D5 B5 D5 G

Self-aligning bearing bottom part1)

for RN series load cells, consisting of:Base plate, 3 tension pins

7MH4 115 - C11


60 kg, 130 kg, 280 kg10 t, 13 t28 t60 t

3 D5 B5 D5 G

Self-aligning bearing top part1)2)

for RN series load cells7MH4 132 - 4 K11


0.5 t, 1 t2 t, 3,5 t, 5 t

AK

Self-aligning bearing bottom part1)

for RN series load cells7MH4 132 - 4AG11


0.5 t, 1 t, 2 t, 3,5 t, 5 t


Elastomer bearing1)2)

for RN series load cells7MH4 130 - 3EE11

consisting of:elastomer package, force transfer, sealMaterial: Stainless steel, Neoprene

For load cells with a nominal load of:60 kg, 130 kg, 280 kg

Elastomer bearing1)

for RN series load cells 7MH4 130 - E11

consisting of:elastomer package with fixing plate, force transfer, sealMaterial: Stainless steel, NeopreneFor load cells with a nominal load of

0.5 t, 1 t2 t, 3,5 t, 5 t10 t, 13 t

4 A4 K5 C

Siemens WT 01 · 2002 3/9

Load cells and mounting componentsOrdering Data



Grounding cable Order No.z

1) Load cell is not included in the scope of delivery.2) Combination mounting unit is not included in the scope of delivery.3) To protect the load cell, it is strongly recommendable to use a ground-


Combination mounting unit1)3)

for RN series load cells7MH4 125 - A11


60 kg, 130 kg, 280 kg10 t, 13 t

3 D5 B

Combination mounting unit1)3)

for RN series load cells7MH4 132 - 4 C11


0.5 t and 1 t2 t, 3.5 t, 5 t

AK

Guide element for combination mounting unit1)2)

for RN series load cells, consisting of:2 flanges, 2 pivots, 1 adapter, fixing elements

7MH4 132 - Q12


0.5 t, 1 t 2 t, 3.5 t, 5 t10 t, 13 t

4 A4 K

7MH4 134 - 5 BQ12

Grounding cable, copperto discharge parasitic currentsLength: 400 mm

7MH3 701-1AA1

K series1) Order No.

CC series1) Order No.

Documentation Order No.

Pressure plate3)

for K series load cells2 pressure plates are required, one above and one below the load cell.

7MH3 115 - A1

For load cells with a nominal load of:2.8 to 6 t13 t28 t60 t130 t280 t

3 A1 B2 B3 B1 C2 C

Material: Steel, painted

Self-aligning bearing3)

For CC series load cells, consisting of top plate, base plate and 3 pressure pieces

7MH4 136 - A11


10 t, 25 t40 t, 60 t100 t

5 E5 L6 A

Combination mounting unitfor CC series load cells1)

consisting of top plate, base plate, 3 pressure pieces, locking arrangement and oscillation limiter

7MH4 136 - 5 C11


10 t, 25 t40 t, 60 t 3)

EL

Instruction Manual forSIWAREX R load cells, K series7MH3 105• German• English

C74000-B5900-C5C74000-B5976-C5

Siemens WT 01 · 20023/10


Siemens WT 01 · 2002 4/1

4/2 Weighing electronics4/2 SIWAREX U4/5 SIWAREX M4/11 SIWAREX Batch4/12 SIWAREX A4/16 Configuration aid 14/17 Configuration aid 24/18 Configuration aid 34/19 Configuration aid 44/20 Configuration aid 54/22 Configuration aid 6

4/23 Load cells and mounting components

4/23 Basic design 4/24 Overview and design4/26 Load cells4/26 - BB series4/28 - SB series4/31 - RN series4/33 - CC series4/35 - K series4/36 Grounding cable4/37 Guide elements4/40 Bending support points4/41 External oscillation limiter

4/42 Basis for configurations4/43 Configuration example 1 4/44 Configuration example 24/45 Configuration example 34/46 Configuration example 4

Technical description

4/2 Siemens WT 01 · 2002


SIWAREX U




SIWAREX U is the weighing system for load and force measur-ing. It is available with either one or two measuring channels. One measuring channel is required for each set of scales.

In addition to its weighing functions, SIWAREX U monitors two user-parameterizable limits (e.g. choice of min./max.) and quickly signals any out-of-range values to the SIMATIC S7 with a process interrupt.

SIWAREX U has two serial interfaces. The TTY interface is used to connect up to four digital remote displays. In addition to the two weight values of weighing channels 1 and 2, another two val-ues can be set via SIMATIC and indicated on the remote dis-plays.

A PC can be connected to the RS 232 interface to parameterize the SIWAREX U, or this interface can be used for serial connec-tion (SIWAREX protocol) of a host computer (e.g. PC).

SIWAREX U, front view with door open

Weight calculation and adjustment

The analog-digital converter of SIWAREX U converts the analog signal of the load cells to a digital signal.

Fifty measured values per second are determined here with a resolution of up to 65,535 parts.

The weight values are represented in word format within the load capacity (numerical range: -32,768 to 32,767).

Since SIWAREX U is calibrated before leaving the factory, mod-ules can be replaced without readjusting the scales. It is only necessary to load the scale parameters from the replaced mod-ule to the new module (e.g. via SIWATOOL or via SIMATIC).

Apart from the function for calibrating SIWAREX U with an applied calibration weight, theoretical calibration is also possi-ble via the characteristic value and rated load of the load cells.

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Digital filters

The two digital filters of SIWAREX U filter out any noise signals (e.g. due to vibration and load fluctuations). It is particularly rec-ommended that filters be used with worm drives, vibrating troughs and mixers.

The following filters are available:

• Critically damped exponent filters to the fourth power (adjustable filter frequencies: 0.05 to 5 Hz)

• Mean value filter (mean value of 32 measured values)

The two filters can also be used simultaneously (i.e. cascaded).

Connection of load cells

All sensors (e.g. torque sensors) and load cells can be con-nected to SIWAREX U that:

• have a characteristic value of 1 to 4 mV/V

• can be operated with a supply voltage of 10.3 V

• have a measuring principle based on the Wheatstone bridge (resistive)

• conform to the permissible resistance limits (see Technical specifications, page 2/7)

The supply voltage for the load cells is isolated from the 24 V power supply.

If more than one load cell is connected to one measuring chan-nel of the SIWAREX U in parallel (4-conductor or 6-conductor connection), the JB junction box should be used (see configur-ing aids or description of junction box).

The 6-conductor connection technique is generally recom-mended for connecting the junction box to SIWAREX U. With the 6-conductor connection technique, temperature-dependent voltage drops on the cables, which cause problems especially in the case of long distances, are compensated for by SIWAREX U.

Load cells may only be connected in parallel when they have the same characteristic value, rated load and internal resistance. The total resistance per measuring channel in a parallel circuit may not be lower than 41 Ω (i.e. 82 Ω for 2-channel SIWAREX U, 87 Ω for 1 and 2-channel applications in Ex zones).

When one load cell is connected, all the cables between the SIWAREX U and load cell are monitored for wire break.

If several load cells are connected in parallel in the junction box, only the cables between the junction box and SIWAREX U are monitored.

With applications in the Ex zone, an Ex(i) interface is also neces-sary (see "Configuration aid 6").

Siemens WT 01 · 2002 4/3

Technical descriptionWeighing electronics

SIWAREX U

Weighing functions

SIWAREX U provides numerous weighing functions. Weighing commands can be called via:

• the SIMATIC CPU

• an appropriate telegram via the RS 232 interface.

Similarly, status messages from SIWAREX U (e.g. limit 1 tripped, etc.) can be evaluated via the same interfaces.

Zero setting

The zero point of the weighing system can shift (e.g. due to soil-ing of the weighing mechanism and/or the load bearing imple-ment). Zero setting sets the gross weight to zero. The new zero point is applicable to all subsequent weighing operations until zero setting is performed again.

Limits

SIWAREX U has 2 parameterizable limits per measuring channel which can be parameterized as the minimum or maximum value.

The magnitude of the hysteresis is defined indirectly via the switch-on point and switch-off points (see Fig.). The hysteresis is used to prevent the limit status from switching repeatedly while the weight value is hovering around the specified limit.

Parameterization of limits

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%

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)

&

)

%&(#

%

&*&'(& &*&(&

Parameterization and commissioning of SIWAREX U

SIWAREX U can be commissioned quickly and easily using the SIWATOOL Windows parameterization software. The PC is directly connected to SIWAREX U via the RS 232 interface.

This method is ideally suited to users without any programming knowledge. All adjustable parameters in the weighing electron-ics can be set in user-friendly input screens, stored on diskette and printed out for plant documentation. There is no need for time consuming setting of DIP switches or plug-in jumpers.

"SIWATOOL" Windows parameterization software

Parameterization can be performed on-line and off-line. In off-line mode, entered parameters can be used later for one or more scales and transferred to the modules in on-line mode. The com-prehensive diagnostic functions in on-line mode facilitate reli-able fault localization (i.e. ensure that commissioning of SIWAREX U is fast).

SIWATOOL offers the additional function of theoretical adjust-ment. When theoretical adjustment is used with the characteris-tic value and rated load of the load cells, adjustment weights are not required.

Within the SIMATIC automation system, all scales parameters (i.e. data records) for the scales are available to the CPU (see "Configuration in SIMATIC").

This means that when operator control and monitoring systems are used (e.g. SIMATIC HMI operator panels OP7 and OP17 or the WinCC visualization system), the user interface can be cus-tomized for user-friendly process control (e.g. for visualization of weight values and plant states or entering scale parameters, etc.).

Siemens WT 01 · 20024/4


SIWAREX U


Configuration in SIMATIC

Communication between SIWAREX U and SIMATIC S7/C7

SIWAREX U is integrated into SIMATIC S7/C7 via the standard system functions of SIMATIC (SFCs) in both central concepts and distributed concepts with PROFIBUS-DP.

The SFCs are integrated into the cyclic application program and ensure that the actual values and scales parameters are trans-ferred from the weighing electronics to the automation system and vice versa. Weight values and scales parameters are stored in the automation system in a data block (DB). The STEP 7 appli-cation program can access this data block.

Communication between SIWAREX U and SIMATIC S5 or other PROFIBUS masters

SIWAREX U is addressed via the I/O area, whereby SIWAREX U reserves 16 bytes of I/O address space. 8 bytes are used for each weighing channel.

The gross weight and scales status are updated cyclically by SIWAREX U and can be read out via the respective input area of SIMATIC S5.

Communication between SIWAREX U and the SIMATIC PCS 7 process control system

Within the SIMATIC PCS 7 process control system, SIWAREX U is integrated in the CFC (Continuous Function Chart) by means of graphical configuration.

CFC is a technology-based graphical configuration tool in which technology blocks (e.g. controller blocks, logical links, scale blocks, etc.) are selected from libraries and placed in CFCs.

Each SIWAREX U module is represented by a block. The inputs and outputs of this block can be connected to each other or to other blocks.

The SIWAREX U block features integral message and mainte-nance functions.

In conjunction with "active bus modules," SIWAREX U supports hot swapping of the module.

When a defective module has been replaced, all scales para-meters can either be transferred to the OS (Operator Station) by pressing a button, or sent automatically (if configured in the CFC) to the new module. The new weighing module is then avail-able for weighing tasks immediately.

Connecting SIWAREX U in a CFC

Operator control and monitoring

Remote displays

For the visualization of weight values, up to 4 remote displays can be directly connected to the TTY interface of SIWAREX U.

In addition to the current weight values, any 2 specified values can be output from the programmable controller to the remote displays. For example, the specified values can be used to visu-alize a material flow that was calculated by the programmable controller.

With the remote displays from Link-electronics GmbH (types FA14 and FA20), a pushbutton on the remote display is used to switch between "weight, weighing channel 1", "weight, weighing channel 2", "specified value 1", and "specified value 2".

SIMATIC HMI operator panels

For applications which require operator control of the scales in addition to the display of weight values, a wide variety of opera-tor panels from the SIMATIC HMI family is available. The line-oriented, graphical operator panels are connected via the MPI interface (i.e. multipoint interface) or via PROFIBUS-DP directly to the CPU of the SIMATIC programmable controller. This means that more than one weighing module can be operated from one operator panel. The ProTool configuration software can be used to create individual user interfaces for operation of both the scales and the plant.

Visualization in the SIMATIC PCS 7 process control system

In the SIMATIC PCS 7 process control system, a faceplate is pro-vided for SIWAREX U for visualization and operator control of the scales via the operator station.

The scales can be operated via the faceplate (e.g. zero setting) and the weight values can be monitored.

Faceplate for visualization of SIWAREX U (view is available in German or English, as required)

Depending on requirements, the faceplate can be presented in various views (e.g. standard, maintenance, etc.).

Siemens WT 01 · 2002 4/5


SIWAREX M


SIWAREX M is a weighing and proportioning system with verifi-cation capability for maximum accuracy requirements. In addi-tion to its extensive weighing functions, SIWAREX M also con-trols proportioning independently of the cycle time of the automation system. Functions such as coarse/fine proportion-ing, automatic reproportioning with or without inching mode as well as auto-optimization for the fine flow switch-off point permit optimum proportioning accuracy.

The two serial interfaces (TTY and RS 232) of the SIWAREX M can be used to connect a printer and a remote display, both with verification capability, or a PC for parameterizing the SIWAREX M. These interfaces can be alternatively used for the serial con-nection (3964R or SIWAREX protocol) of a host computer (e.g. a PC). In addition to the two serial interfaces, 4 digital outputs, 3 digital inputs and one analog output are available on the mod-ule.

The functions of the inputs and outputs can be specified based on the application at hand.

3 digital inputs

Functions can be assigned as desired from 19 different scales functions (e.g. zero setting, taring, start proportioning, stop pro-portioning, print, etc.)

4 digital outputs

Functions can be assigned as desired from 30 different scales functions (e.g. limit 1 tripped, proportioning running, fine flow signal, coarse flow signal, group fault, etc.)

1 analog output

For the output of an analog value (e.g. for an analog display, a process recorder or a closed-loop control). The analog output is designed as a 0/4 to 20 mA current output. The gross or net weight or an external specified value from the SIMATIC can be output on the analog output.

SIWAREX M, front view with door open

Weight calculation and calibration

The analog-digital converter of SIWAREX M converts the analog signal from the load cells into a digital signal.

Fifty measured values are determined per second with a resolu-tion of up to ± 524,288 parts.

SIWAREX M is calibrated before leaving the factory so modules can be replaced without the need for readjustment.

Only the scales parameters of the replaced module must be loaded to the new module (e.g. via SIWATOOL or SIMATIC).

In addition to the capability of adjusting SIWAREX M by using a calibrating weight, theoretical calibration via the characteristic value and rated load of the load cells is also possible.

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-. &%/& 0(1* 2

-.3/ --3 -3-%

0&.3/-3-%)

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Theoretical commissioning and replacement of the modules without readjustment is, however, not permitted with applications requiring verification.

Presentation of weight values

The weight values can be displayed with a maximum resolution of ± 524,288 parts.

The digit increments and decimal places can be parameterized. The digit increment determines the increment of the display val-ues for gross, net and tare. The decimal places are only applica-ble to remote displays or the log printer.

Decimal places: XXXXXXXXXXX.XtoX.XXXXX

Digit increment: 1, 2, 5, 10, 20, 50

With applications requiring verification, a resolution/accuracy of up to 6000 e is possible (e = calibration value, digit increment). The gross and net weights can be presented with enhanced res-olution (factor of 10).

With applications not requiring verification, resolution of the weight values can be set as desired (max. of ± 524,288 parts).

The weight units can be specified as desired as 2 ASCII charac-ters (e.g. kg, t, lb, etc.).

Digital filters

The two digital filters of SIWAREX M filter out any noise signals (e.g. due to vibration and load variations). It is particularly rec-ommended that filters be used with worm drives, vibrating troughs and mixers.

The following filters are available:

• Critically damped exponent filters to the fourth power (adjustable filter frequencies: 0.05 to 5 Hz)

• Mean value filter (mean value of 32 measured values)

The two filters can also be used simultaneously (i.e. cascaded).


All sensors (e.g. torque sensors) and load cells can be con-nected to SIWAREX M that:




• conform to the permissible resistance limits (see Technical specifications, page 2/6).


If more than one load cell is connected to the SIWAREX M in par-allel (4-conductor or 6-conductor connection), the JB junction box should be used (see configuring aids or description of junc-tion box).

The 6-conductor connection technique is generally recom-mended for connecting the junction box to SIWAREX M. With the 6-conductor connection technique, temperature-dependent voltage drops on the cables, which cause problems especially in the case of long distances, are compensated for by SIWAREX M.

Siemens WT 01 · 20024/6


SIWAREX M


Load cells may only be connected in parallel when they have the same characteristic value, rated load and internal resistance. The overall resistance in a parallel circuit may not be lower than 60 Ω (87 Ω for applications in Ex zones).

When one load cell is connected, all cables between the SIWAREX M and the load cell are monitored for wire break.

If several load cells are connected in parallel in the junction box, only the cables between the junction box and SIWAREX M are monitored.


Weighing functions

SIWAREX M provides numerous weighing and proportioning functions. Scales commands can be called via:

• the SIMATIC CPU

• the digital inputs which can be assigned as desired

• an appropriate telegram via the RS 232 or TTY interface

• a connected remote display with operator control functions (only BD14 M).

Similarly, status messages from SIWAREX M (e.g. proportioning finished, limit 1 tripped, etc.) can be evaluated via the same interfaces.

Zero setting

The zero point of the scales can shift (e.g. due to soil on the weighing mechanism and/or the load bearing implement. Zero setting resets the gross weight to zero. The new zero point is used for all subsequent weighing operations until zero setting is performed again or the zero point is shifted by the automatic zero point offset.

Automatic zero resetting

To suppress slight drifts (caused by temperature conditions, etc.) when the scales are not loaded, the automatic zero point offset can be activated.

The gross weight is automatically set to zero when the measured value remains at a value (within the zero setting range) near the previous zero point for a certain length of time.

The zero point offset functions at up to 0.2 e / 400 ms.

Zero setting range:• Scale requiring verification: ± 2% of the

measuring range• Scale not requiring verification: ± 100% of the

measuring range

Taring

Taring sets the net weight to zero after the scales have been loaded with a weight. During taring, the tare weight is loaded with the current gross weight, and the net weight then only indi-cates the additional weight applied.

Specified tare

When containers whose own empty weight is known are weighed, the specified tare is used to indicate the weight of the container's contents (i.e. net weight).

Example:Gross weight (total weight of container) = 10 kgSpecified tare (container's weight) = 2 kg→ The net weight (contents of container) is determined as 8 kg

Limit 1 and limit 2

SIWAREX M has two parameterizable limits which can be parameterized as the minimum or maximum limit.

The magnitude of the hysteresis is defined indirectly via the switch-on point and switch-off points. Hysteresis is used to pre-vent the limit output from switching on and off repeatedly while the weight value is hovering around the specified limit.

Limit 3 (overfill)

The overfill limit can be parameterized with a hysteresis in the same manner as the other limits. When the overfill limit trips, any running proportioning is terminated.

Empty message

When the scales are being emptied, material residue may remain in the container so that the weight value does not return to zero. To establish that the scales have been emptied despite the residue, the empty message can be used.

If a specified weight value (empty message value) is passed below for a certain length of time (empty message delay time), the empty message is output.

Maximum scales load

The maximum scales load can be parameterized. This is used particularly for scales requiring verification so that the permitted weighing range can be specified. If the maximum load for the scales is exceeded by more than 9 display increments, an appropriate status message is output. In addition, the weight value is flagged as invalid in displays and printing of the weight value is suppressed (only with remote displays/printers that are directly connected to SIWAREX M).

Standstill monitoring

Standstill monitoring is used to detect a stable, balanced posi-tion of the scales. Standstill of the scales is signaled when, within a specified time (standstill time ∆ts), the gross weight changes by less than a specified fluctuation range (standstill value ∆ms) (see Fig.).

The standstill time and standstill value can be parameterized as desired.

Standstill message

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Siemens WT 01 · 2002 4/7


SIWAREX M

Standstill monitoring can be used to shorten a proportioning pro-cess. If the standstill message becomes active before settling time has elapsed (see "Proportioning functions"), a tolerance check can be immediately performed for proportioning and, if necessary, the finished message can be output. System throughput can be increased by premature conclusion of the proportioning process. Shortening of the settling time by the standstill message can also be deactivated.

In addition, certain scales functions (e.g. printing, zero setting, taring) can only be performed when the standstill message is active.

Proportioning functions (fill weighing and deduction weighing)

Proportioning can be performed in "fill weighing" mode (propor-tioning up) as well as in "deduction weighing" mode (propor-tioning down). Whenever a "proportioning procedure with auto-matic taring" is started, the net weight displayed at that time is reset to zero. The signals for coarse flow and fine flow are acti-vated (see Fig.).

When the coarse flow switch-off point has been reached, the coarse flow signal is reset. When the fine flow switch-off point is reached, the fine flow signal is also reset and the settling time starts. When the settling time has elapsed, a tolerance check is performed and the finished message is output for the propor-tioning procedure (for proportioning with automatic repropor-tioning, only when the tolerance minus limit has not been fallen below).

The proportioning procedure can be shortened by using stand-still monitoring which increases throughput of the proportioning system. If the standstill message becomes active before the set-tling time has elapsed (Fig., section ➀ ), a tolerance check is immediately performed (if parameterized) and the finished mes-sage is output.

Sequence for fill weighing (proportioning with course and fine flows)

If the automatic log printout function is active, the current weigh-ing data are printed out with the finished message on a log printer connected to SIWAREX M. The weighing data from SIWAREX M are stored until the next proportioning process and can be accessed by the automation system.

Proportioning in inching mode

As an alternative to proportioning with coarse flow and fine flow, proportioning can also be performed in inching mode.

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Inching mode is particularly useful for materials which are diffi-cult to proportion, materials with a tendency to trail material, and pneumatic conveyors in which a total amount is conveyed "por-tion-by-portion" using compressed air.

In contrast to proportioning which uses coarse flow and fine flow, inching mode uses only the fine flow signal. When proportioning is performed in inching mode, the fine flow signal is activated for a specific, parameterizable time (inching time tT). After this time has elapsed, the fine flow signal is deactivated and the settling time tB starts. After the settling time has elapsed, a check is made to determine whether the lower tolerance limit has been exceeded (i.e. tolerance check). If so, the proportioning proce-dure is concluded. If not, the fine flow signal is activated again. This procedure is repeated until the tolerance minus limit has been exceeded once after expiration of the settling time.

Optimization of proportioning

An automatic optimization function is used to adjust the fine flow switch-off point after each proportioning procedure. This ensures that subsequent proportioning procedures can be per-formed more precisely and with shorter proportioning times (i.e. avoidance of reproportioning). The new, optimized fine flow switch-off point is calculated at the end of a proportioning pro-cedure after the settling time has elapsed. The new switch-off point is automatically used by SIWAREX M for subsequent pro-portioning (if parameterized).

Tolerance check and automatic reproportioning

A tolerance check is performed at the end of each proportioning process. The tolerance range is defined by the tolerance limits TOL+ and TOL–.

In the event of under-proportioning, SIWAREX M can add the material that is lacking by means of reproportioning. Repropor-tioning is automatically activated by the weighing module. Depending on the type of material, one of two modes can be selected for reproportioning:

1. Reproportioning in inching mode

2. Continuous reproportioning

With continuous reproportioning, the fine flow signal remains active until the tolerance minus limit is exceeded. The repropor-tioning procedure can be performed more than once, for example, when as a result of pneumatic conveyance, the actual value drops below the tolerance minus limit again after the com-pressed air is switched off (i.e. the force of compressed air cre-ates an additive weight value).

Monitoring of proportioning

Clogged proportioning nozzles or the characteristics of the material (i.e. formation of heaps in the container) can cause dis-turbances in the material flow. To prevent unacceptably long proportioning times, two procedures are used by SIWAREX M.

• Material flow monitoring (for proportioning with coarse/fine flow)

• Proportioning time monitoring (for reproportioning or proportioning in inching mode)

During the proportioning procedure, the material flow monitoring function checks to determine whether a minimum flow rate of material is achieved. A material flow fault is reported when, within a specified time (material flow monitoring time ∆t), the gross weight changes by less than a specified fluctuation range (material flow monitoring value ∆m). To allow the two proportion-ing phases (i.e. coarse flow or fine flow) to be monitored sepa-rately, the monitoring functions are executed twice. This allows two different fluctuation ranges to be specified (see Fig.).

Siemens WT 01 · 20024/8


SIWAREX M


Monitoring of proportioning (with reproportioning)

If the material flow does not reach the minimum value, this is sig-naled via the coarse material flow fault or fine material flow fault signals.

The automation system can then initiate measures to correct material build-up. With materials that have a tendency to form heaps within the container, pneumatic hammers or vibrators can be activated in the supply bin to correct heap formation, for example.

Material flow monitoring can be delayed to allow for the response times of mechanical equipment (e.g. when activating the coarse flow or fine flow):

• The delay time tVG for monitoring the coarse flow starts when the coarse flow is activated. The "coarse material flow fault" sig-nal is not activated until this time has elapsed.

• The delay time tVF for monitoring the fine flow starts when coarse flow is deactivated (i.e. transition from coarse flow to fine flow) and fine flow is activated (only for continuous repro-portioning). The "fine material flow fault" signal is not activated until this time has elapsed.

Reproportioning and proportioning in inching mode are moni-tored by time and not material flow. If a reproportioning or pro-portioning procedure in inching mode has not been completed or terminated before monitoring time tÜ has elapsed, the "time-out" signal is output.

Multi-component scales

Used to make mixtures based on preset recipes, multi-compo-nent scales can be built from standard components (e.g. SIWAREX M, digital input/output modules of SIMATIC etc.).

Within a multi-component scale, SIWAREX M performs the func-tion of a multiplexed single-component scale (i.e. during propor-tioning, it compares the setpoint and actual value and controls proportioning independently of the cycle time of the automation system). The coarse flow signal and fine flow signal are available for controlling the proportioning nozzles on the digital outputs of SIWAREX M. Two digital outputs are sufficient because, in the case of multi-component scales, they are connected to the respective bin via the root of a floating digital output module from SIMATIC (e.g. relay module). This allows almost any number of supply bins to be controlled.

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Recipe sequence control on the CPU or a host control system transfers the material-specific proportioning data to SIWAREX M for each individual component (e.g. setpoint, coarse flow switch-off value, fine flow switch-off value, tolerance limits etc.).

Multi-component scales using SIWAREX + SIMATIC

Depending on the components to be proportioned (e.g. compo-nent 1), the signal path for the coarse flow signal and fine flow signal is connected through to bin 1 via a SIMATIC digital output module. The scales are then tared and proportioning is started. On completion of proportioning, the procedure is repeated for each additional component.

Print functions

Three commands (i.e. "Print text 1," "Print text 2" and "Repeat print") are provided to trigger the print functions. The "Repeat print" command is used to repeat printing of the most recently activated text with the last weighing data from the buffered RAM of SIWAREX M.

Consecutive weighing number

For archiving and documentation purposes, a consecutive weighing number can be output in the printed log.

Each time a printout is triggered (exception: "Repeat print"), the 6-position weighing number is incremented (0 to 999,999). The latest weighing data (i.e. gross, net, tare, setpoint, date and time) are stored separately for the print repeat function in the buffered RAM of SIWAREX M.

Automatic printout

With proportioning scales, "Print text 2" for the batch printout is automatically printed with the finished message (if parameter-ized). "Print text 1" can then be used to print out the recipe header.

Parameterization of the print log

The print log can be parameterized as desired using SIWATOOL (Windows parameterization program). Eighty characters are available for each print log.

Characters include:

• Text characters

• Control codes (e.g. line feed, tabulators etc.)

• Fields

Siemens WT 01 · 2002 4/9


SIWAREX M

Parameterization and commissioning of SIWAREX M

SIWAREX M can be commissioned quickly and easily using the Windows parameterization software SIWATOOL. The PC is directly connected to SIWAREX M via the RS 232 or TTY inter-face.

Even users with no knowledge of programming will find it easy to specify all settable parameters of the weighing electronics via input screens, store them on diskette and print them out on a printer for system documentation. There is no need for tedious setting of DIP switches or plug-in jumpers.

Windows parameterization software "SIWATOOL"

Parameterization can be performed on-line and off-line. In off-line mode, entered parameters can be used later for one or more scales and transferred to the modules in on-line mode. The com-prehensive diagnostic functions in on-line mode facilitate reli-able fault localization (i.e. fast commissioning of SIWAREX M).

SIWATOOL offers the additional function of theoretical adjust-ment. When theoretical adjustment is used with the characteris-tic value and rated load of the load cells, adjustment weights are not required.

Within the SIMATIC automation system, the scales parameters (i.e. data records) for the scales are available to the CPU (see "Configuration in SIMATIC").

This means that when operator control and monitoring systems are used (e.g. SIMATIC HMI operator panels OP7, OP17 etc., or the WinCC visualization system), the user interface can be cus-tomized for user-friendly process control (e.g. for visualization of weight values and plant states and for entering scales parame-ters, etc.).

Communication between SIWAREX M and SIMATIC S7/C7/S5

For integration of SIWAREX M in SIMATIC S7/C7 or in SIMATIC S5, standard function FC41 (SIMATIC S5: standard function block FB41) is available for easy handling. Function FC41 (FB41) is called in the application program once per cycle and SIWAREX M module to execute the data transfer between SIWAREX M and the SIMATIC CPU.

Data block DB-SIWAREX is available for the user interface. In DB-SIWAREX, scales parameters which are to be transferred to SIWAREX M can be stored by the STEP 5/7 application program and actual values that have been read from the SIWAREX M module (e.g. gross weight) can be accessed.

Data block DB-SIWAREX (user interface)

DB-SIWAREX consists of two parts – the job mailboxes and the parameter area (see Fig. below). The parameter area contains the scales parameters and is divided into individual data records (DR). A data record can contain a single scales parameter (e.g. DR22: setpoint) or a number of scales parameters (e.g. DR23: proportioning data).

The job mailboxes of DB-SIWAREX specify whether a data record is to be written to SIWAREX M or read from SIWAREX M. Read or write jobs are defined by specifying the numbers of the data records to be transferred.

Several data records which are to be read or written can be defined in the job mailboxes at the same time (see example: Transfer DR2 to SIWAREX M; read DR30 and DR31 from SIWAREX M).

Data transfer between SIMATIC and SIWAREX M

Communication between SIWAREX M and the SIMATIC PCS 7 process control system

SIWAREX M is integrated in the SIMATIC PCS7 process control system by means of graphical configuration in the CFC (Contin-uous Function Chart).

CFC is a technology-oriented graphical configuration tool in which technology blocks (e.g. controller blocks, logical links, scales blocks, etc.) are selected from libraries and placed in CFCs.

Each SIWAREX M module is represented by a block. The inputs and outputs of this block can be connected to each other or to other blocks.

The SIWAREX M block features integrated signaling and mainte-nance functions.

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Siemens WT 01 · 20024/10


SIWAREX M


In conjunction with "active bus modules," SIWAREX M supports hot swapping of the module.

When a defective module has been replaced, the scales param-eters can be transferred to the OS (operator station) by pressing a button, or automatically (if configured in the CFC) to the new module. The new weighing module is then immediately available for weighing tasks.

Connecting SIWAREX M graphically in a CFC

Remote displays

To visualize weight values, up to 4 remote displays can be directly connected to the TTY interface of SIWAREX M. In addi-tion to the gross weight and net weight, the setpoint can also be displayed.

With the remote displays from Link-electronics GmbH (types FA14 and FA20), a pushbutton on the remote display can be used to switch between gross weight, net weight and setpoint. The BD14 M remote display also supports zero setting and tar-ing of the scales as well as activation of printing and proportion-ing functions.

The S11 and S310 remote displays from Siebert Industrieelek-tronik GmbH can be used as remote displays with verification capability. Both remote displays also indicate the status 1/4e, NET and scales standstill in addition to the weight value.

SIMATIC HMI operator panels

For applications which require operator control of the scales and the plant in addition to displaying the weight, a wide variety of operator panels of the SIMATIC HMI family is available. The line-oriented and graphical operator panels are connected via the MPI interface (i.e. multipoint interface) or via PROFIBUS-DP directly to the CPU of the SIMATIC programmable controller. This means that more than one weighing module can be controlled from one operator panel. The ProTool configuration software can be used to create individual user interfaces for manipulating both the scales and the plant.

Visualization in the SIMATIC PCS7 process control system

In the SIMATIC PCS7 process control system, a faceplate is pro-vided for SIWAREX M for visualization and control of the scales with the operator station.

The scales can be controlled via the faceplate (e.g. zero setting, taring, start proportioning, etc.) and the weight values can be monitored.

Faceplate for visualization of SIWAREX M (view is available in German or English, as required)

Depending on the particular requirements, the faceplate can be presented in various views (e.g. standard, maintenance, param-eter, batch, etc.).

Miscellaneous

Date and time

The date and time can be used in printouts. SIWAREX M reads the date and time periodically via a connected remote display with clock (only with the BD14 M from Link-electronics GmbH) or automatically via the SIMATIC CPU.

Operation requiring verification

Since SIWAREX M has been awarded an EC-Type Examination Certificate as a non-automatic commercial scale of Class III (6000 d) as well as various German approvals, it is suitable for use in applications requiring verification.

• SIWAREX M in operation requiring verification

If the SIWAREX M is used as a non-automatic scale, a remote display with verification capability must be connected directly to the SIWAREX M, and usually also a logging printer with verifica-tion capability.

If a remote display/logging printer with verification capability is connected to it, the SIWAREX M can be used with verification capability within the SIMATIC. Approval of the complete automa-tion system is unnecessary.

However, following consultation with the responsible verification authority, it is also possible to seal parts of the automation sys-tem and to obtain approval by means of a "Single acceptance". The prerequisites for acceptance must be agreed upon with the verification authority.

Furthermore, it is possible in obtain an EC-Type Examination Certificate from the Physikalisch-Technische Bundesanstalt for customer-specific system configurations (e.g. SIWAREX M + S7-CPU + OP7 operator panel + software).

Protection of the adjustment data

The adjustment data for SIWAREX M can be write-protected by setting a DIP switch. The switch can be sealed with a verification seal to prevent a change in adjustment of the verified scale.

Siemens WT 01 · 2002 4/11


SIWAREX Batch

SIWAREX Batch SIWAREX Batch is a software package written in the STEP7 lan-guage STL with which the configuration of batching plants is supported. The software package can be used to configure small and medium-sized batching plants particularly rapidly and efficiently. SIWAREX Batch executes in the SIMATIC S7-300 and SIMATIC S7-400 automation systems, and supports use of the SIWAREX M as a proportioning scale. Any HMI devices can be used for operation and monitoring. The scope of delivery includes two examples for the OP7 and OP27 units.SIWAREX Batch is open for the user, has a scaleable perfor-mance, and can therefore be matched to the respective require-ments. The number of production lines and scales present in the plant can be defined by the user, as can the quantity breakdown for recipes and components.The SIWAREX Batch software package contains all standard functions which are required independent of the sector. SIWAREX Batch is designed such that application-specific extensions can be simply added using defined interfaces which are open for the user. SIWAREX Batch comprises a kernel for batch control, and sev-eral subroutines for functions such as proportioning with SIWAREX M, mixing, emptying, etc.In order to use SIWAREX Batch for several production lines, it is only necessary to repeatedly call the corresponding parts of the program in the automation system. It is possible for proportion-ing operations to execute simultaneously in several scales, or to control a production line with offset recipes. The software open-ness and flexibility means that mixed operation of SIWAREX M and proportioning pumps is possible for solving the proportion-ing task.The required hardware – whether a small CPU 314 or a powerful CPU 417 – is selected depending on the complexity of the con-trolled process. SIWAREX Batch can be used for small batching scales (e.g. one scale with mixer and a few recipes and compo-nents) or equally well for comprehensive batching plants with several SIWAREX M scales.

System design

The automation system for a batching plant can consist of the following components:• At least one SIWAREX M weighing system• SIMATIC S7-300 (CPU 314 or better) or SIMATIC S7-400• SIMATIC HMI e.g. OP27, WinCC• SIWAREX Batch standard software• SIWAREX M configuration package

Required tools

The following are required as configuration tools:• SIMATIC STEP7 software version 5.0• ProTool version 5.1

Scope of delivery

The SIWAREX Batch software package is delivered on a CD-ROM. The scope of delivery comprises:• SIWAREX Batch standard software as STEP7 project• Example project: 8 silos and 2 scales with operation and mon-

itoring for OP27 and OP7• Configuration manual

Example configuration with ProTool:

SIWAREX Batch features:

7 Recipe control, supports several production lines with max. 9 scales per production line

7 Simple configuring using standard features (SIMATIC S7 and SIMATIC HMI standard hardware, standard software programmed using STEP 7)

7 Cost-effective expansion of batching plant possible using scaleable software and modular hardware

7 Contains standard functions such as event/time-controlled functions and proportioning functions

7 Application-specific extensions are simple to implement using defined, open interfaces

7 Freely-definable number of silos and conveyors (optional silo assignment)

7 Open interfaces for recipe database and HMI systems

Siemens WT 01 · 20024/12


SIWAREX A



SIWAREX A is a weighing and proportioning system with verifi-cation capability for maximum proportioning speeds. In addition to its extensive weighing functions, SIWAREX A also controls proportioning independently of the cycle time of the automation system. Functions such as coarse/fine proportioning, automatic reproportioning with or without inching mode as well as auto-optimization permit optimum accuracy and speed.

The two serial interfaces (TTY and RS 232) of the SIWAREX A can be used to connect a printer and a remote display, both with verification capability, or a PC for parameterizing the SIWAREX A. In addition to the two serial interfaces, 4 digital outputs, 3 dig-ital inputs and one analog output are available on the module.

SIWAREX A, front view with door open

Weight calculation and calibration

The analog-digital converter of SIWAREX A converts the analog signal from the load cells into a digital signal.

A measured value is determined every 20 ms with a resolution of up to 1 million parts.

SIWAREX A is calibrated before leaving the factory so modules can be replaced without the need for readjustment (not in appli-cations requiring verification).

Only the scales parameters of the replaced module must be loaded to the new module (e.g. via SIWATOOL or SIMATIC).

Presentation of weight values

The weight values can be displayed with a maximum external resolution of 99999 parts.

The digit increments and decimal places can be parameterized.

With applications requiring verification, a resolution/accuracy of up to 2x6000 e is possible (e = calibration value, digit incre-ment).

The weight units can be specified as kg or lb.

Digital filters

A 4-stage digital filter of SIWAREX A can compensate any noise signals (e.g. due to vibration and load variations).

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• conform to the permissible resistance limits (see Technical specifications, page 2/7).


If more than one load cell is connected to the SIWAREX A in par-allel (4-conductor or 6-conductor connection), the JB junction box should be used.

Load cells may only be connected in parallel when they have the same characteristic value, rated load and internal resistance. The overall resistance in a parallel circuit may not be lower than 60 Ω (87 Ω for applications in Ex zones).

When one load cell is connected, all cables between the SIWAREX A and the load cell are monitored for wire break.

If several load cells are connected in parallel in the junction box, only the cables between the junction box and SIWAREX A are monitored.


Weighing functions and proportioning functions

SIWAREX A provides numerous weighing and proportioning functions. Scales commands can be called via:

• the SIMATIC CPU

• the digital inputs

• an appropriate telegram via the RS 232 or TTY interface.

Similarly, status messages from SIWAREX A (e.g. proportioning finished, limit 1 tripped, etc.) can be evaluated via the same interfaces.

Scales features:

PTB and EU approval for a resolution of 6000 or 2 x 6000 parts.

Can be configured as a multi-scale or multi-range scales (2 ranges).

Adjustment and parameterization using interactive dialogs.

Siemens WT 01 · 2002 4/13


SIWAREX A

Filling functions:

• Two filling speeds

• Material-flow-dependent compensation for coarse and fine flows

• Disabling times for suppressing overshoots

• 31 types of material with associated filling weights, switch-off points, tolerances, disabling times, preselection counters, total quantities, etc.

• Selection of several control strategies for adaptation to a wide range of filling machines (dribbling time controller, proportional controller, adaptive controller, proportioning time controller)

• Automatic reproportioning if tolerance is fallen below

• Disabling setpoint/actual-value comparators for plants with material that is difficult to proportion

• 3 operating modes:- Filling mode - Palletizing mode- Loading mode

• Automatic zero setting or taring

• Cyclic evaluation of fill weight (automatic weighing checks, cal-culation of mean value and standard deviation)

• Monitoring of proportioning time

• Emptying using empty message threshold (weight) or time

• Weighing logs (test printout, fill results, start and end logs etc.) in conjunction with optional printer or terminal program

Proportioning functions (fill weighing)

Proportioning control controls the time-critical proportioning sig-nals for coarse and fine flows with a precision of 1 ms.

During proportioning, the coarse flow and fine flow switch-off points are continuously optimized. Optimization of both switch-off points not only ensures filling that can be precisely verified but also a rapid proportioning process and therefore high plant throughput.

Several self-adjusting controllers are available for optimization of the switch-off points. These allow fluctuations in material flow as well as variations in material densities to be detected and com-pensated.

Irregularities in proportioning are evaluated using statistical techniques and therefore do not have a negative effect on sub-sequent proportioning procedures.

The universal proportioning control can handle special operat-ing conditions such as the use of hammers or vibrators just as easily as the dynamic transient response of the scales or a sack breakage.

Sequence for fill weighing (proportioning with course and fine flows)

If the automatic log printout function is active, the current weigh-ing data are printed out with the finished message on a log printer connected to SIWAREX A.

Parameterization and commissioning of SIWAREX A

SIWAREX A can be commissioned quickly and easily using the Windows parameterization software SIWATOOL A. The PC is directly connected to SIWAREX A via the RS 232 or TTY inter-face.

Even users with no knowledge of programming will find it easy to specify all settable parameters of the weighing electronics via input screens, store them on diskette and print them out on a printer for system documentation. There is no need for tedious setting of DIP switches or plug-in jumpers.

Windows parameterization software "SIWATOOL A"

Parameterization can be performed on-line and off-line. In off-line mode, entered parameters can be used later and trans-ferred to the modules in on-line mode. The diagnostic functions in on-line mode facilitate reliable fault localization (i.e. fast com-missioning of SIWAREX A).

Within the SIMATIC automation system, the scales parameters (i.e. data records) for the scales are available to the CPU (see "Configuring in SIMATIC").

This means that when operator control and monitoring systems are used (e.g. SIMATIC HMI operator panels OP7, OP17 etc., or the WinCC visualization system), the user interface can be cus-tomized for user-friendly process control (e.g. for visualization of weight values and plant states and for entering scales parame-ters, etc.).

Siemens WT 01 · 20024/14


SIWAREX A


Configuring in SIMATIC

Communication between SIWAREX A and SIMATIC S7-CPU

For integration of SIWAREX A in SIMATIC, standard function FC32 is available for easy handling. Function FC32 is called in the application program once per cycle and SIWAREX A module to execute the data transfer between SIWAREX A and the SIMATIC CPU.

SIWAREX A integration in SIMATIC S7

Data block DB-SIWAREX is available for the user interface. In DB-SIWAREX, scales parameters which are to be transferred to SIWAREX A can be stored by the STEP 7 application program and actual values that have been read from the SIWAREX A module (e.g. gross weight) can be accessed.

Data block DB-SIWAREX (user interface)

DB-SIWAREX consists of two parts – the job mailboxes and the parameter area (see Fig. below). The parameter area contains the scales parameters and is divided into individual data records (DR).

The job mailboxes of DB-SIWAREX specify whether a data record is to be written to SIWAREX A or read from SIWAREX A. Read or write jobs are defined by specifying the numbers of the data records to be transferred.

Several data records which are to be read or written can be defined in the job mailboxes at the same time.

Data transfer between SIMATIC and SIWAREX A

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Siemens WT 01 · 2002 4/15


SIWAREX A

HMI

Remote displays

A remote display S11 from Siebert GmbH can be connected as the main scale display to the TTY interface of the SIWAREX A.

The remote display also indicates the status 1/4e, NET and scales standstill in addition to the weight value with verification capability.

SIMATIC HMI devices

For applications which require operator control of the scales and the plant in addition to displaying the weight, a wide variety of operator panels of the SIMATIC HMI family is available. The line-oriented and graphical operator panels are connected via the MPI interface (i.e. multipoint interface) or via PROFIBUS-DP directly to the CPU of the SIMATIC programmable controller. This means that more than one weighing module can be controlled from one operator panel. The ProTool configuration software can be used to create individual user interfaces for manipulating both the scales and the plant.

Operation requiring verification

Since SIWAREX A has been awarded an EC-Type Examination Certificate as a non-automatic commercial scale of Class III (6000 d) as well as an automatic scale for weighing in Germany, it is suitable for use in applications requiring verification.

• SIWAREX A in operation requiring verification

If the SIWAREX A is used as a non-automatic scale, a remote display with verification capability must be connected directly to the SIWAREX A, and usually also a logging printer with verifica-tion capability.

If a remote display and/or logging printer with verification capa-bility is connected to it, the SIWAREX A (as a non-automatic scale or as an automatic scale for weighing) can be used with verification capability within the SIMATIC. Approval of the com-plete automation system is unnecessary.

When used within SIMATIC, the user can define the number of SIWAREX modules and the operator panels.

Operation requiring verification in the SIWAREX AWS sys-tem

The system which consists exclusively of standard components can also be used as compact electronics.

The required software has already been generated, and is present on the SIWAREX A configuration package CD. It need only be downloaded into the OP7 operator panel and the SIMATIC CPU.

The system has been awarded an EC-Type Examination Certifi-cate as a non-automatic scale, and approval as an automatic scale for weighing in Germany. The main display with verification capability is the SIMATIC OP7 operator panel.

The standard configuration of the SIWAREX AWS comprises:

• SIWAREX A weighing system

• SIMATIC S7-300 automation system (e.g. CPU 312 IFM)

• SIMATIC HMI OP 7 operator panel

• Software for the OP 7 generated using ProTool

• Standard software generated in STEP 7 which can therefore be extended/modified.

4/16 Siemens WT 01 · 2002


SIWAREX U, basic configuration

Weighing electronics - configuration aid 1


Configuration

Description

Easy startup under WindowsSIWAREX U can be started up quickly and easily using the Windows parameterization software SIWATOOL. The PC or the

SIMATIC programming device (PG) is directly connected for this purpose via the RS 232 interface to SIWAREX U.

SIWAREX U interfacesIn addition to the SIMATIC S7 backplane bus connection, other interfaces are available on the SIWAREX U module:

• TTY interface for connection of up to 4 remote displays. The fol-lowing values can be displayed on a remote digital display:- Weight, channel 1- Weight, channel 2- Specified value 1 (value can be specified via SIMATIC)- Specified value 2 (value can be specified via SIMATIC)

• RS 232 interface for data communication (SIWAREX protocol)

System integration of SIWAREX U• Centrally in SIMATIC S7-300, M7-300• Distributed with SIMATIC C7, S7-/M7-300, S7-/M7-400, PCS 7• Distributed with SIMATIC S5-95U/-115U/-135U/-155U• Stand-alone (only with S7 CPU or IM 153-1)

Note on stand-alone modeIf the SIWAREX U is operated in stand-alone mode (e.g. only with a remote display) at least one IM 153-1 interface module or S7 CPU is necessary. The CPU or IM 153-1 does not have to be configured and can be used at a later date for automation pur-poses or for the PROFIBUS coupling.

Configurator

Item Description Order No. Selection criterion Quantity Price

Each Total

1 a SIWAREX U (single-channel version) 7MH4 601-1AA01 a: for connecting 1 scale

b SIWAREX U (2-channel version) 7MH4 601-1BA01 b: for connecting up to 2 scales

2 a SIWAREX U manual, German 7MH4 693-3AA11 At least 1 manual

b SIWAREX U manual, English 7MH4 693-3AA21

3 Connection of SIWAREX U to serial PC interface, 3 m long

7MH4 607-8CA 1 connecting cable for each PC/programming device used for parameterization

4 a SIWAREX U configuration package for SIMATIC S7/S5

7MH4 683-3AA63 1 configuration package for each PC/pro-gramming device used for parameterizationa: SIWAREX U is integrated into SIMATIC

via the commonly used PLC languages of STL (Statement List), LAD (Ladder Dia-gram) or FBD (Function Block Diagram).

b: SIWAREX U is integrated into SIMATIC S7 via CFC (Continuous Function Chart) which is the configuration technique normally used with the SIMATIC PCS 7 process control system).

b SIWAREX U configuration packagefor SIMATIC PCS 7, Version 5.0 incl. configuration package item 4a(block for CFC and faceplate for WinCC)

7MH4 683-3BA62

5 Front connector 6ES7 392-1AJ00-0AA0 1 front connector for each SIWAREX U

6 Shield attachment 6ES7 390-5AA00-0AA0 1 shield attachment for up to 2 SIWAREX U modules

7 Shield connection terminalsContents: 2

6ES7 390-5CA00-0AA0 1 shield connection terminal for each inter-face used: measured value input, channel 1, meas. value input, channel 2, RS 232, TTY

8 Junction box (JB) 7MH4 710-1BA Junction box (JB) for connecting up to 4 load cells:1 JB for each single-channel SIWAREX U2 JB for each 2-channel SIWAREX U

9 Li2Y(ST)CY 6 × 0.75 mm2 7MH4 702-8AB Connects JB to SIWAREX U (per meter)

Option: Remote display from Siebert Industrieelektronik GmbH or Link-electronics GmbH

10 Remote display On request from themanufacturer

Max. 4 remote displays for each SIWAREX U;for further details, see page 2/13

11 Cable LiYCY 4 × 2 × 0.25 mm2, (per meter)

7MH4 407-8BD0 Connects SIWAREX U to remote display

4/17Siemens WT 01 · 2002

Technical descriptionWeighing electronics - configuration aid 2

SIWAREX M, basic configuration

Configuration DescriptionEasy startup under Windows

SIWAREX M can be started up quickly and easily using the Win-dows parameterization software SIWATOOL. The PC or SIMATIC programming device is directly connected for this purpose via the RS 232 or TTY interface to SIWAREX M.

SIWAREX M interfacesIn addition to the SIMATIC S7 backplane bus connection, other interfaces are available on the SIWAREX M module:• TTY interface for data communication (SIWAREX protocol or

3964R) or for connection of up to 4 remote displays (for gross, net or setpoint values)

• RS 232 interface for data communication (SIWAREX protocol or 3964R) or for connection of a log printer

• 3 digital inputs (freely assignable functions) • 4 digital outputs (freely assignable functions)• 1 analog output (gross value, net value or ext. specified value)

System integration of SIWAREX M• Centrally in SIMATIC S7-300• Distributed with SIMATIC C7, S7-300, S7-400, PCS 7• Distributed with TELEPERM M (AS 388/488/TM)• Distributed with SIMATIC S5-115U/-135U/-155U• Stand-alone

Configurator


Each Total

1 SIWAREX M (weighing and proportioning) 7MH4 553-1AA41 1 SIWAREX M for each scale2 a SIWAREX M manual, German 7MH4 593-3AA11 At least 1 manual

b SIWAREX M manual, English 7MH4 593-3AA213 a Connection of SIWAREX M to serial

PC interface, 9-pin, 2 m long7MH4 702-8CA Required for SIWATOOL, 1 connecting cable

for each PC/PG, version depends on cable length requiredb 9-pin, 5 m long 7MH4 702-8CB

4 a SIWAREX M configuration packagefor SIMATIC S7/S5

7MH4 583-3FA63 1 config. pack. per PG/PC f. parameterization:a: Used in a SIMATIC S7/C7, configured

using STL, LAD, or FBDb: Used in a SIMATIC PCS7, configured

graphically in CFC

b SIWAREX M config. pack. for SIMATIC PCS 7 incl. config. pack. item 4a (block for CFC and faceplate for WinCC)

7MH4 583-3EA62

5 Front connector 6ES7 392-1AJ00-0AA0 1 front connector for each SIWAREX M6 Shield attachment 6ES7 390-5AA00-0AA0 1 shield attachment for each SIWAREX M7 Shield connection terminals

Contents: 26ES7 390-5CA00-0AA0 1 terminal for each interface used: measured

value input, RS 232, TTY, analog output, digi-tal inputs/outputs

8 Junction box (JB) 7MH4 710-1BA 1 JB for each SIWAREX M for connecting up to four load cells together

9 Li2Y(ST)CY 6 x 0.75 mm² 7MH4 702-8AB Connects JB to SIWAREX M (per meter)Option: Printer (with verification capability)

10 DR 2030/24 printer 6GF6520-1LB 1 printer for each SIWAREX M11 RS 232 printer interface 6GF6520-2HA 1 interface for each printer12 a Connection of SIWAREX M to serial

printer interface, 5 m long7MH4 702-8CH 1 cable for each printer,

version depends on the required cable length b 10 m long 7MH4 702-8CK

Option: Remote display from Siebert Industrieelektronik GmbH13 Remote display

(Siebert Industrieelektronik GmbH)On request from themanufacturer

Max. 4 remote displays for each SIWAREX M; for further details, see page 2/13

14 Sub-D plug, 15-pin (male)for TTY interface of SIWAREX M

6ES5 750-2AA21 1 connector per SIWAREX M for up to 4 remote displays

15 Cable LiYCY 4 x 2 x 0.25 mm², (per meter) 7MH4 407-8BD0 Connects SIWAREX M to remote displayOption: Remote display from Link-electronics GmbH

16 Remote display(Link-electronics GmbH)

On request from themanufacturer

Max. 41) remote displays per SIWAREX M;for further details, see page 2/13

17 Sub-D plug, 15-pin (male) for:– TTY interface of SIWAREX M and– BD14 M interface

6ES5 750-2AA21 For FA7 / FA14 / FA20: 1 connectorFor BD14 M: 2 connectors

18 Cable LiYCY 4 x 2 x 0.25 mm², (per meter) 7MH4 407-8BD0 Connects SIWAREX M to remote display1) Exception: BD 14 M only 1

Siemens WT 01 · 20024/18


SIWAREX A, basic configuration


Configuration Description

Easy startup under WindowsSIWAREX A can be started quickly and easily using the Win-dows parameterization software SIWATOOL. The PC or SIMATIC programming device is directly connected for this pur-pose via the RS 232 interface to SIWAREX A.

SIWAREX A interfacesIn addition to the SIMATIC S7 backplane bus connection, other interfaces are available on the SIWAREX A:• TTY interface for connection of a remote display• RS 232 interface for data communication (SIWAREX protocol)

or for connection of a log printer• 3 digital inputs • 4 digital outputs • 1 analog output

System integration of SIWAREX A• Centrally in SIMATIC S7-300• Distributed with SIMATIC C7, S7-/M7-300, S7-400

Configurator


Each Total

1 SIWAREX A (weighing and proportioning) 7MH4 421-1AA01 1 SIWAREX A for each scale

2 a SIWAREX A manual, German The manuals are present on the CD of the configuration package as files in PDF format.b SIWAREX A manual, English

3 a Connection of SIWAREX A to serial PC interface, 9-pin, 2 m long

7MH4 702-8CA Required for SIWATOOL, 1 connecting cable for each PC/PG used for parameterization, version depends on cable length requiredb 9-pin, 5 m long 7MH4 702-8CB

4 SIWAREX A configuration packagefor SIMATIC S7

7MH4 483-3DA63 1 configuration package for each PC/PG used for parameterization. Used in a SIMA-TIC S7/C7

5 Front connector 6ES7 392-1AJ00-0AA0 1 front collector for each SIWAREX A

6 Shield attachment 6ES7 390-5AA00-0AA0 1 shield attachment for each SIWAREX A

7 Shield connection terminalsContents: 2

6ES7 390-5CA00-0AA0 1 terminal for each interface used: measured value input, RS 232, TTY, analog output, digital inputs/outputs

8 Junction box (JB) 7MH4 710-1BA 1 junction box for each SIWAREX A; excep-tion: a JB is not required if the load cell can be directly connected to the SIWAREX A

9 Li2Y(ST)CY 6 × 0.75 mm2 7MH4 702-8AB Connects JB to SIWAREX A (per meter)

Option: Printer (with verification capability)

10 DR 2030/24 printer 6GF6520-1LB 1 printer for each SIWAREX A

11 RS 232 printer interface 6GF6520-2HA 1 interface for each printer

12 a Connection of SIWAREX A to serial printer interface, 5 m long

7MH4 702-8CH 1 cable for each printer,version depends on the required cable lengthb 10 m long 7MH4 702-8CK

Option: Remote display from Siebert Industrieelektronik GmbH

13 Remote display S11(Siebert Industrieelektronik GmbH)


Weight display with verification capability

14 Sub-D plug, 15-pin (male)for TTY interface of SIWAREX A

6ES5 750-2AA21 1 plug for up to 4 remote displays

15 Cable LiYCY 4 × 2 × 0.25 mm2, (per meter)

7MH4 407-8BD0 Connects SIWAREX A to remote display

4/19Siemens WT 01 · 2002


SIWAREX U, M and A,centrally connected in SIMATIC S7-300

Configuration

CC = Central controller EU = Expansion unit

Description

The maximum number of SIWAREX modules that can be plugged into the SIMATIC S7-300 programmable controller is dependent on the following factors:• Max. number of modules in central controller or expansion unit

(CC/EU)• Memory requirements in the S7 CPU• Max. permissible current consumption (from 5 V) from the

S7 backplane bus

Technical specifications for SIMATIC S7-300

SIWAREX requirements

CPUType

CPUMain memory

No. of slots available in CC/EUCurrent infeed (5 V) in S7 backplane busConfiguration

(Kbyte) Single-tier 2-tier Max. 4-tierCC IM 365 1 × IM 360

3 × IM 361CPU 312 IFM 6 8 mod. Multi-tier configuration not CPU 313 12 800 mA possibleCPU 314 24 8 mod. 8 + 8 mod. 1 × 8 mod.1)

CPU 314 IFM 32 1200 mA Total:1100 mA

1 × 850 mACPU 315 48 plusCPU 315-2 DP 64 3 × 8 mod.1)

CPU 316 128 3 × 800 mACPU 318-2 DP 512,2)

mod. = modules, CC = central controller, EU = expansion unit

When using Current required (5 V) from S7 backplane bus:

CPU main memory requirement

n × SIWAREX U n × 100 mA n × 100 bytem × SIWAREX M m × 50 mA 3410 byte +

m × 602 bytem × SIWAREX A m × 50 mA min. 3902 byte +

m × 352 byte1) With CPU 314 IFM: total of max. 31 modules2) Of which 256 for code, 256 for data

Configurator


Each Total

– SIWAREX U (weighing system)

See Configuration aid 1

For load and force measurements with medium accuracy requirements (see Technical specifications, page 2/6)

– SIWAREX M (weighing and proportioning system)


For proportioning applications, as well as load and force measurements with high accuracy requirements or applications requi-ring verification (see Technical specificati-ons, page 2/6)

– SIWAREX A (weighing and proportioning system)


For fast proportioning applications, filling plants, bagging plants (see Technical speci-fications, page 2/6)

1 CPU 3XX See ST 70 or CA 01 Select according to requirements, see Catalog ST 70 or CA 01

2 Memory card See ST 70 or CA 01 Not for CPU 312 IFM, CPU 314 IFM

3 Backup battery See ST 70 or CA 01 Not for CPU 312 IFM

4 a PS 307 load power suppliesAC 120/230 V; DC 24 VPS 307-1B; 2A (module width: 50 mm)

6ES7 307-1BA00-0AA0 Only necessary if a 24 V DC power supply is not availableCurrent consumption:SIWAREX U: n x 220 mA = ..... mASIWAREX M, A: m x 300 mA = ..... mAS7-CPU: ..... mA = ..... mAOther: ..... mA = ..... mA

Total: ..... mA

b PS 307-1E; 5A(module width: 80 mm)

6ES7 307-1EA00-0AA0

c PS 307-1K; 10A(module width: 200 mm)

6ES7 307-1KA00-0AA0

5 a DIN rail, 160 mm 6ES7 390-1AB60-0AA0 Module widths:SIWAREX U: n x 40 mm = ..... mmSIWAREX M, A: m x 80 mm = ..... mmWidth of PS 307: ..... mmWidth of S7-CPU: ..... mmWidth of other modules: ..... mm

Total: ..... mm

b DIN rail, 480 mm 6ES7 390-1AE80-0AA0

c DIN rail, 530 mm 6ES7 390-1AF30-0AA0

d DIN rail, 830 mm 6ES7 390-1AJ30-0AA0

e DIN rail, 2000 mm 6ES7 390-1BC00-0AA0

n = number of SIWAREX U modules, m = number of SIWAREX M or SIWAREX A modules.

Siemens WT 01 · 20024/20


SIWAREX U, M and A - centrally and decentrallyconnected to SIMATIC S5, S7-300 and S7-400


Configuration

Description

SIWAREX U, SIWAREX M and SIWAREX A as distributed I/Os in the modular ET 200M I/O station

Several SIWAREX modules can be connected to PROFIBUS-DP in conjunction with other I/O modules via the modular ET 200M I/O station (IM153-1 or IM153-2 interface module).

The modular ET 200M I/O station can be implemented in two dif-ferent design versions. In the standard version, the individual modules are connected in series via plug-in bus connectors in such a way that the backplane bus is built up automatically.

In the second design version, active bus modules are used. These active bus modules allow defective modules to be repla-ced without disconnection of the backplane bus. In this manner, data transfer between the remaining modules in the I/O station is assured.

The maximum number of SIWAREX modules that can be con-nected via the ET 200M I/O station depends on the following fac-tors:

• Maximum number of SIWAREX modules in ET 200M(in the case of a distributed SIMATIC S5/S7 configuration)- 7 SIWAREX modules for each IM 153-1 or IM 153-2

(153-2 is used in place of the IM153-1 if required by other modules, e.g. FM353)Exceptions: - Max. 1 SIWAREX U, no SIWAREX M,

when the master is a SIMATIC S5-95U- Max. 8 SIWAREX modules for

CPU 318-2 DP, CPU 417-4, CP 443-5 Ext.

• Memory requirement in the CPU of the master system- Memory requirement of (n × SIWAREX U):

Memory requirement = n × 100 byte- Memory requirement of (m × SIWAREX M):

Memory requirement for SIMATIC S5 = 1600 DW + m × 300 DW (*)Memory requirement for SIMATIC S7 = 3410 byte + m × 602 byte(*) specified in datawords for S5, memory requirement can

differ slightly from one CPU to another- Memory requirement of (m x SIWAREX A)1):

With minimum memory configuration in:SIMATIC S7 = 3902 byte + m × 352 byteWith average memory configuration in:SIMATIC S7 = 3902 byte + m × 888 byteWith maximum memory configuration in:SIMATIC S7 = 3902 byte + m × 3228 byte

• Maximum number of SIWAREX modules that can be addres-sed (relevant for SIMATIC S5 only)- Max. 8 SIWAREX U for S5-95U with DP master interface

(one IM 153-1/2 is required for each SIWAREX U)- Max. 32 SIWAREX U/M modules for each IM 308-C

(max. 7 SIWAREX modules for each IM 153-1/2)

If other weighing functions are to be implemented via the SIMATIC (e.g. calculation of material flow) or if control functions have to be implemented decentralized (e.g. mixer switching, speed control of helical extruders, control of conveyors), it is advantageous to use a distributed automation system compris-ing a CPU with an integral PROFIBUS-DP interface or CPU + communications processor (CP).

1) SIWAREX A only in conjunction with SIMATIC S7.

Siemens WT 01 · 2002 4/21


SIWAREX U, M and A - centrally and decentrallyconnected to SIMATIC S5, S7-300 and S7-400

Configurator

Item Description Order No. Selection criterion Quantity PriceEach Total

– SIWAREX U – See Configuration aid 1– SIWAREX M – See Configuration aid 2– SIWAREX A 1) – See Configuration aid 3Distributed configuration with ET 200M1 a PS 307 load power supplies

AC 120/230V; DC 24VPS 307-1B; 2A(module width: 50 mm)

6ES7 307-1BA00-0AA0 Only necessary if a 24 V DC power supply is not available, Current consumption:SIWAREX U: n x 220 mA = ..... mASIWAREX M, A: n x 300 mA = ..... mAIM 153-1/2: 625 mAOther: ..... mA = ..... mA

Total: ..... mA

b PS 307-1E; 5A(module width: 80 mm)

6ES7 307-1EA00-0AA0

2 a ET 200M manual, German 6ES7 153-1AA00-8AA0 At least 1 manual,if not already availableb ET 200M manual, English 6ES7 153-1AA00-8BA0

3 a IM 153-1 slave 6ES7 153-1AA02-0XB0 Max. 7 SIWAREX modules for each IM Exceptions for master:S5-95U: 1 SIWAREX U, no SIWAREX MCPU 318-2 DP, CPU 417-4, CPU 443-5 Ext., IM 467: 8 SIWAREX U, M

b IM 153-2 slave 6ES7 153-2AA01-0XB0 See 3a (only required if other FM modules require an IM 152-2, e.g. FM 353)

4 a CPU 31X-2 DP master See ST 70 or CA 01 Distributed connection to SIMATIC S7-300(CPU with integral DP interface)

b CPU 41X-2 DP master See ST 70 or CA 01 Distributed connection to SIMATIC S7-400(CPU with integral DP interface)

c CP 342-5 master Not currently possibled IM 467 master 6ES7 467-5GJ02-0AB0 Distributed connection to SIMATIC S7-400 (CPU

without integral DP interface, or second DP line required)

e CP 443-5 Ext. master 6GK7 443-5DX02-0XE0 Distributed connection to SIMATIC S7-400(additional communication mechanisms required, e.g. Send/Receive)

f C7-626 DP, C7-633 DP master See ST 70 or CA 01 Distributed connection to SIMATIC C7g IF964-DP master 6ES7 964-2AA00-0AB0 Distributed connection to SIMATIC M7

(only possible for SIWAREX U)h S5-95U master (with DP master) 6ES5 095-8ME02 Distributed connection to SIMATIC S5-95U,

(only possible for SIWAREX U)i IM 308-C master 6ES5 308-3UC11 Distributed connection to SIMATIC S5-1X5U2)

k Other PROFIBUS-DP masters On request from themanufacturer

Only currently possible for SIWAREX U, master must support the special identification format (SKF) of the GSD files

5 a Bus cable 6XV1 830-0AH10 Cable type depends on requirements (per meter)b Bus cable (buried cable) 6XV1 830-3AH10

c Bus cable (trailing cable) 6XV1 830-3BH106 a Bus connector without PG interface 6ES7 972-0BA11-0XA0 Type depends on requirements, one

connector for each master or IM 153-1b Bus connector with PG interface 6ES7 972-0BB11-0XA07 a Manual for ET 200 modular I/O

station with IM 308-C and S5-95U/DP descriptions, German

6ES5 998-3ES12 1 manual is required if the SIMATIC S5 is a master

b English 6ES5 998-3ES22Option: ET 200M without active backplane bus8 a DIN rail, 160 mm 6ES7 390-1AB60-0AA0 Module widths:

SIWAREX U: n x 40 mm = ..... mmSIWAREX M, A: n x 80 mm = ..... mmWidth of PS 307: ..... mmIM 153-1/2: 40 mmWidth of other modules: ..... mm

Total: ..... mm

b DIN rail, 480 mm 6ES7 390-1AE80-0AA0c DIN rail, 530 mm 6ES7 390-1AF30-0AA0d DIN rail, 830 mm 6ES7 390-1AJ30-0AA0

Option: ET 200M with active backplane bus9 a DIN rail 19" 6ES7 195-1GA00-0XA0 For up to 5 active bus modules

b DIN rail 530 mm 6ES7 195-1GF30-0XA010 Active bus module 6ES7 195-7HA00-0XA0 For PS/IM incl. bus module covers11 Active bus module 6ES7 195-7HB00-0XA0 For up to 2 SIWAREX U12 Active bus module 6ES7 195-7HC00-0XA0 For 1 SIWAREX M or SIWAREX A13 Covers 6ES7 195-1JA00-0XA0 4 backplane bus covers and 1 bus module cover

(only required when slots are not occupied by modules)

1) SIWAREX A only in conjunction with SIMATIC S7.2) SIWAREX A not possible.

Siemens WT 01 · 20024/22


SIWAREXOperation in potentially explosive atmosphere


Configuration

DescriptionScales in Ex zoneTo connect load cells that are located in potentially explosive atmospheres, an Ex interface (Ex-I) is required which is connec-ted between the SIWAREX weighing module and the load cell (specially designed for the Ex zone) or the junction box JB.

The Ex(i) interface must be installed outside the potentially explosive atmosphere.It is available in a version with metal housing and degree of pro-tection IP 54 for installation outside the switchgear cabinet, and in two further versions for installation inside the cabinet. The low-current version must be selected if temperature class T6 is to be achieved for the Ex protection. The reduced current output of the Ex interface must be taken into consideration when selecting the type and number of load cells.

Process I/Os in the Ex zoneAppropriate SIMATIC modules are available for digital and ana-log inputs and outputs in the potentially explosive atmosphere.The Ex modules are implemented for the automation of chemical plants and can be used in instrumentation and control applicati-ons. The primary task of the Ex modules is to isolate the intrinsi-cally-safe circuits in the potentially explosive atmosphere and the non-intrinsically-safe internal circuits of the programmable controller.If the digital inputs and outputs of SIWAREX M are routed into the Ex zone, generally available Ex isolators can be implemented (24 V).

Remote displays in the Ex zoneFor the potentially explosive atmosphere, remote displays with analog interfaces can be used for example which are connected via an Ex isolator to the analog output of SIWAREX M or via an intrinsically-safe analog output of SIMATIC. Alternatively, remote displays in pressurized housings can be used (manufactured by Siebert Industrieelektronik GmbH).

Operator control and monitoring in the Ex zoneFor applications in potentially explosive atmospheres of zones 1 and 2, special intrinsically-safe operator panels are offered by various manufacturers. These operator panels can, for example, be connected to SIMATIC S7 via the MPI of the S7 CPU or via an add-on communications module (CP).As an alternative to intrinsically-safe units, operating devices installed in pressurized housings can also be used (SIMATIC HMI).

Configurator

Item Description Order No. Selection criterion Quantity PriceEach Total

Option: Connection of a scale in the Ex zone1 Ex interface, type

• SIWAREX Pi or• SIWAREX IS or• SIWAREX IS, low-current version

7MH4 710-5AA7MH4 710-5BA7MH4 710-5CA

1 interface for each scaleInstallation outside switchgear cabinetInstallation in cabinet, temperature class T4Installation in cabinet, temperature class T6

2 Li2Y(ST)CY 6 x 0.75 mm², blue sheath

7MH4 702-8AA Connects junction box (JB) to Ex interface Ex-I (per meter)

3 Li2Y(ST)CY 6 x 0.75 mm² 7MH4 702-8AB Connects Ex-I to SIWAREX (per meter)Option: Connection of digital or analog inputs/outputs in Ex zone4 a SIMATIC digital or analog Ex

input/output modulesSee ST 70 Version a is preferred due to greater

compactness and lower cabling outlay. Version b can, for example, be used when a SIWAREX M digital input is to be routed into the Ex zone.

b Ex isolator for digital or analog signals


Option: Remote display in Ex zone (with analog interface)5 Ex isolator for 0 to 20 mA signal Knick Elektronische

Messgeräte GmbH & Co.P.O. Box 37 04 15D-14134 BerlinTel./Fax: 030/8001-0/-635

Information on possible configurations and condi-tions of use on request from the manufacturer.Internet http://www.knick.de/

6 Ex remote display

Option: Operator control and monitoring7 Operator panel for the Ex zone SAE-Stahl GmbH

Im Gewerbegebiet Pesch 14D-50767 KölnTel./Fax: 0221/59808-200/-60

Information on possible configurations and condi-tions of use on request from the manufacturer.Internet http://www.sae-stahl.de

4/23Siemens WT 01 · 2002

Technical descriptionSIWAREX R - load cells and mounting components

Basic designTechnical description

Principle of a bending load cell

Principle of a Wheatstone bridge

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Application

SIWAREX R load cells are equipped with strain gauges (SG). They are used for static and dynamic weight measurements.


Load cells are sensors that convert a mechanical variable (i.e. weight) into an electrical signal.

The basic element is a special type of spring body to which friction-locked strain gauges are attached. Strain gauges are made of thin insulation material in which a resistance film has been integrated.

Under the influence of a weight force F, the spring body is deformed (see schematic presentation) and as a result the strain gauge deforms elastically. Due to the change in the external shape of the strain gauge, the ohmic resistance of its conductor also changes. The top left and bottom right strain gauges are compressed, their resistance films are shortened and the ohmic resistance is reduced accordingly. The top right and bottom left strain gauges are stretched, their resistance films are extended and the ohmic resistance is increased.

For each load cell, at least 4 strain gauges are connected together to form a complete Wheatstone bridge. The stretched or compressed strain gauges are connected so that the positive or negative resistance changes are added together to form a total imbalance in the bridge.

On one bridge diagonal, the power voltage is applied (with 6-conductor technique, also the sensor voltage, SENSE) and on the other diagonal, the measured voltage is tapped.

With a constant power voltage (EXC), the measured voltage (SIG) changes proportionally to the introduced load.

Siemens WT 01 · 20024/24


Overview and design

SIWAREX R - load cells and mounting components

Base plate with overload protection

Layout of the base plate with overload protection using SB series load cells as an example

Elastomer bearing

Layout of the elastomer bearing using BB series load cells as an example

Self-aligning bearing for load cells, RN series

Self-aligning bearing for RN series load cell

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Application

The base plate with integral overload protection for load cells of the BB and SB series permits easy, correct installation of the load cell.


The integral overload protection ensures that the load cells are not damaged by static overloading.

The load cells can be installed on the base plate and aligned even before final installation of the scales. This ensures that the permissible spring excursion of the load cell is precisely set, up to contact with overload protection.

The load cell is not included with the base plate with overload protection.

Application

The self-centering elastomer bearing for load cells of the BB, SB and RN series is the ideal load introduction device for scales without guiding elements and is used to damp mechanical vibra-tions and dynamic shocks. It is primarily used with container scales and platform scales.


Elastomer bearings are rubber-metal composites made of neo-prene and stainless steel. They ensure large spring excursions (i.e. a high degree of damping) despite small dimensions.

The load cell and base plate are not included with the elastomer bearing.

Application

The self-aligning bearing for load cells of the RN series is espe-cially suitable for installation in container and platform scales and is characterized by its low mounting height.


The self-aligning bearing consists of a self-aligning bolt, a top plate (top of the self-aligning bearing) and a base plate (bottom of the self-aligning bearing).

The self-centering, self-aligning bolt allows the top plate and thus the load bearing implement to follow horizontal displace-ments (e.g. due to temperature fluctuations) with a swiveling movement.

The construction of the self-aligning bolt creates a restoring force which is dependent on the size of the displacement and the applied load.

The load cell is not included in the scope of delivery.

Siemens WT 01 · 2002 4/25


Overview and design

Self-aligning bearing for load cells, CC and K series

Self-aligning bearing for CC and K series load cell

Combination mounting unit

Layout of the combination mounting unit using RN series load cell as an example

Force guidance for combination mounting unit

Layout of force guidance for combination mounting unit

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Application

The self-aligning bearings for the load cells of the CC and K series are particularly suitable for installation in container, hop-per and vehicle scales.

Design and principle of operationThe self-aligning bearing of the CC series consists of three force guiding pieces, a base plate and a top plate.The self-aligning bearing of the K series consists of two pressure plates.These components, in combination with the load cell, form a complete self-centering unit. The top plate or top pressure plate and thus the load bearing implement is able to follow horizontal displacements (e.g. due to temperature fluctuations) with a swivel movement. The construction of the self-aligning bearing creates a restoring force which is dependent on the amount of displacement and the applied load.The load cell is not included with the self-aligning bearing.

Application

The combination mounting unit for load cells of the BB, SB and RN series is particularly suitable for installation in container scales, platform scales and roller table scales.

Design and principle of operationThe combination mounting unit consists of a self-aligning bolt, oscillation limitation, protection against raising up, a top plate and a base plate.The self-centering, self-aligning bolt allows the top plate and thus the load bearing implement to follow horizontal displace-ment (e.g. due to temperature fluctuations) with a swivel move-ment. The construction of the self-aligning bolt creates a restoring force which is dependent on the amount of displace-ment and the applied load. Oscillation limitation prevents the occurrence of excessive displacement and reliably protects the load cell from damage. The protection against raising up pre-vents excessive lifting up of the load bearing implement. The load cell is not included with the combination mounting unit.

Application

The guide element can be used in addition to the combination mounting unit (only stainless steel) for load cells of the RN and SB series. It is used when undesirable horizontal forces occur during the weighing process, e.g. due to mixing operations with container scales or acceleration of the material to be weighed with conveyor scales.

Design and principle of operationThe guide element consists of two ball joint heads, a spacer and two flanges for installation on the combination mounting unit.The additive guide element can also be retrofitted on combina-tion mounting units if unexpected lateral forces occur during operation of the scales and the combination mounting unit was installed in accordance with the requirements (see "Guide ele-ments", page 4/37 ff.).The guide element diverts horizontal forces up to 1.7 kN to the foundation and therefore minimizes effects on the load cells and the mounting components. The load cells and the combination mounting unit are not included with the guide element.

Siemens WT 01 · 20024/26


BB series


Rated load 10 to 200 kg

Dimensions of SIWAREX R load cell, BB series


Dimensions of base plate with overload protection for SIWAREX R load cells, BB series

Application

The bending beam load cell is particularly suitable for use in small-scale container and platform scales.


The measuring element is a double bending beam made of stainless steel to which 4 strain gauges are applied.

The strain gauges are arranged so that two are stretched and two are compressed.

Under the influence of the load acting in the measuring direction, the spring bodies and therefore the friction-locked strain gauges are elastically deformed. This generates a measuring signal volt-age that is proportional to the load.

The rated measuring path of the load cell is 0.3 ± 0.03 mm at rated load.

Application

The base plate with integral overload protection for load cells of series BB ensures easy, correct installation of the load cell.


The integral overload protection ensures that the load cell is not damaged by static overloading with vertical forces of up to 5 kN.

The load cell can be mounted on the base plate and aligned before final installation of the scales. This ensures that the per-missible spring excursion of the load cell is set precisely until the overload screw is reached.



Siemens WT 01 · 2002 4/27


BB series

Elastomer bearing

Dimensions of elastomer bearing for SIWAREX R load cells, BB series


Dimensions of combination mounting unit for SIWAREX R load cells, BB series

Application

The self-centering elastomer bearing for load cells of series BB is the ideal load introduction element for scales without guide elements and serves to damp mechanical vibrations and dynamic shocks.


Elastomer bearings are rubber-metal composites made of neo-prene and stainless steel. Even with small dimensions, they ensure large spring excursion and therefore a high degree of damping.

If the load support is displaced by more than 4 mm in the hori-zontal direction, measures for restricting sideways play (e.g. stops) must be implemented in the construction of the load bear-ing implement.

In combination with the base plate and integral overload protec-tion, it is ensured that the load cell is not damaged by static over-loading with vertical forces of up to 5 kN.



Application

The self-aligning combination mounting unit for load cells of series BB is particularly suitable for implementation in small-scale container, platform and roller table scales.


The combination mounting unit consists of a self-aligning bolt, oscillation limit, protection against raising up, a top plate and a base plate.

The self-aligning bolt allows the top plate (and thus the load bearing implement) to follow horizontal displacements (e.g. due to temperature fluctuations) with a swivel movement. Due to the design of the self-aligning bolt, a restoring force is created based on the amount of displacement and the applied load.

The oscillation limit prevents excessive sideways displacements and reliably protects the load cell from damage. It can absorb a maximum horizontal force of Fh = 5 kN.

Protection against raising up prevents the load bearing imple-ment from raising up, up to a maximum vertical force of Fv = 6 kN.

The integral overload protection ensures that the load cell is not damaged by static overloading with vertical forces of up to 5 kN.


The load cell is not included with the combination mounting unit.

Siemens WT 01 · 20024/28


SB series


Rated load 500 kg to 5 t

Dimensions of the SIWAREX R load cell, SB series


Dimensions of the base plate with overload protection for SIWAREX R load cells, SB series

Rated load A B C D E ∅ F G H J ∅ K ∅ L M

0.5 - 2 t 203.2 36.5 98.4 63.5 19.1 30.2+0.2 36.5 11.9 47.6 17.5H11 14 101.6

5 t 235.0 47.5 123.8 66.7 20.6 41.3+0.2 47.6 15.8 69.9 25.5H11 22 111.2

Rated load A B C D E ∅ F G H J

0.5 - 2 t 200 100 170 75 15 11 20 45 92.6

5 t 235 120 205 90 15 14 20 40 109.9

Application

The shear beam load cell is particularly suitable for implementa-tion in container, overhead rail conveyor and platform scales.


The measuring element is a shear tension spring made of stain-less steel to which strain gauges are applied. The strain gauges are arranged at 45° to the longitudinal axis on the side of the spring body and are therefore subject to shear forces. Under the influence of the load acting in the measuring direction, the spring bodies (and the friction-locked strain gauges) are elasti-cally deformed. This generates a measuring signal voltage that is proportional to the load.

The rated measuring path of the load cell is max. 0.5 mm at rated load.

Application

The base plate with integral overload protection for load cells of the SB series ensures easy, correct installation of the load cell.


The integral overload protection ensures that the load cell is not damaged by static overloading with vertical forces of up to 40 kN (for load cells with up to 2 t rated load) or 60 kN (for load cells with 5 t rated load).

The load cell can be mounted on the base plate and aligned before final installation of the scales. This ensures that the per-missible spring excursion of the load cell is set precisely until the overload screw is reached.



Siemens WT 01 · 2002 4/29


SB series

Elastomer bearing

Dimensions of the elastomer bearing for SIWAREX R load cells, SB series


Dimensions of the combination mounting unit for SIWAREX R load cells, SB series

Rated load

A B C D E F G H ∅ J K L ∅ M N P

0.5 t, 1 t 100 75 156 12.5 15 170 200 231 11 45 92.6 85 100 75

2 t 120 90 156 15 15 170 200 241 11 45 92.6 100 100 75

5 t 120 90 184 15 15 205 235 271 14 40 109.9 100 120 90

Rated load A B C D E F ∅ G H J K L

0.5 - 2 t 210 120 105 170 75 20 12 100 15 20 72.6

5 t 250 150 140 205 90 25 14 120 20 20 94.9

Application

The self-centering elastomer bearing for load cells of the SB series is the ideal load introduction element for scales without guide elements and serves to damp mechanical vibrations and dynamic shocks. It is used with container and platform scales.


Elastomer bearings are rubber-metal composites made of neo-prene and stainless steel. Even with small dimensions, they ensure large spring excursions and therefore a high degree of damping.

If the load bearing implement is displaced by more than 4 mm in the horizontal direction, measures for restricting sideways play (e.g. stops) must be implemented in the construction of the load bearing implement.

In combination with the base plate and integral overload protec-tion, it is ensured that the load cell is not damaged by static over-loading with vertical forces of up to 40 kN (for load cells of up to 2 t rated load) or 60 kN (for load cells of 5 t rated load).



Application

The self-aligning combination mounting unit for load cells of the SB series is particularly suitable for implementation in container, platform and roller table scales.


The combination mounting unit consists of a self-aligning bolt, oscillation limit, protection against raising up, a top plate and a base plate.

The self-aligning bolt allows the top plate (and the load bearing implement) to follow horizontal displacements (e.g. caused by temperature fluctuations) with a swivel movement. Due to the design of the self-aligning bolt, a restoring force is created, based on the amount of displacement and the applied load.

Oscillation limitation prevents the occurrence of excessive side-ways displacements and reliably protects the load cell from damage. It can absorb a maximum horizontal force of Fh = 10 kN.

Protection against raising up prevents the load bearing imple-ment from raising up excessively. For load cells of up to 2 t rated load, protection against raising up can absorb a maximum ver-tical force of Fv = 10 kN and for load cells of 5 t rated load it can absorb Fv = 25 kN.

The integral overload protection ensures that the load cell is not damaged by static overloading with vertical forces of up to 40 kN (for load cells of up to 2 t rated load) or 60 kN (for load cells of 5 t rated load).



Siemens WT 01 · 20024/30


SB series



Dimensions of force guidance for combination mounting unit for SIWAREX R load cells, SB series

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Rated load A B C D E F G ØH K L M

0.5 t, 1 t, 2 t 120 75 22.5 210 170 20 100 12 160 105 15

5 t 150 90 30 250 205 25 120 14 190 140 20

Application

The guide element can be implemented in addition to the com-bination mounting unit for load cells of the SB series. It is used when undesirable horizontal forces occur during the weighing procedure, e.g. due to mixing operations with container scales or acceleration of the weighing material with conveyor scales.


The guide element consist of two ball joint heads, a spacer and two flanges for installation on the combination mounting unit.

The add-on guide element can also be retrofitted to combination mounting units if unexpected lateral forces arise during opera-tion of the scales provided that the combination mounting unit was installed in accordance with the requirements (see "Guide elements", page 4/37 ff.).

The guide element deflects horizontal forces up to 1.7 kN into the foundation and minimizes the influences acting on the load cells and the mounting components.

The load cells and the combination mounting unit are not included with the guide element.

Siemens WT 01 · 2002 4/31


RN series

Bending ring load cells, rated load 60 kg to 60 t

Dimensions of SIWAREX R load cell, RN series

Elastomer bearing

Dimensions of elastomer bearing for SIWAREX R load cells, RN series

Self-aligning bearing

Dimensions of self-aligning bearing for SIWAREX R load cells, RN series

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Rated load ∅ A B ∅ C ∅ D E ∅ F G Max. tightening torque [Nm]

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60, 130, 280 kg 63 22 15.1 3.2 15 55.5 M5 8 34

0.5 t, 1 t 80 25 19 M10 9.5 70 M6 14 17.5

2 t, 3.5 t, 5 t 80 30 25 15H7 8.5 70 M6 14 17.5

10 t 95 35 29.1 24.9 10 - - - 17.5

13 t 95 35 29.1 24.9 20 - - - 40

Rated load ∅ A B ∅ C E

28 t 120 46 35.9 25

60 t 140 62 47.9 34

Rated load A B C ØD E F G H K ØL ØM N0.5 t, 1 t 100 75 97 85 25 15 6 100 75 11 11 9.52 t, 3.5 t, 5 t 120 90 102 100 30 15 6 100 75 11 11 8.510 t, 13 t 120 90 120 100 35 20 6 120 90 11 14 20

60 to 280 kg version 0.5 to 13 t version

Rated load A B C ØD E F K ØL M60 - 280 kg 80 60 52 63 22 8 11 9 120.5 t, 1 t 100 75 79 80 25 15 10 11 252 t, 3.5 t, 5 t 100 75 79 80 30 15 8.5 11 2510 t, 13 t 120 90 121.2 95 35 20 20 14 4028 t 160 120 203 120 53 30 25 22 4060 t 200 140 254 140 69 36 34 26 50

Self-aligning bearing 0.06 - 13 t Self-aligning bearing 28 / 60 t

Application The bending ring load cell is particularly suitable for implemen-tation in container, conveyor, platform and roller table scales.

Design and principle of operationThe measuring element is a bending ring made of stainless steel. Two expansion measuring spirals are applied to the upper and lower faces of the ring. Under the influence of the centrally acting load in the measuring direction, the bending ring is tilted, i.e. the diameter of the upper ring face is reduced and the diam-eter of the lower ring face is increased. This causes the bending ring (and the expansion measuring spirals installed with friction-locking) to be elastically deformed which generates a measur-ing signal voltage that is proportional to the load.Load cells with a rated load of up to 13 t are equipped with inte-gral overload protection.The rated measuring path depends on the rated load and lies between 0.07 and 0.2 mm.

ApplicationTogether with the bottom part of the self-aligning bearing, the self-centering elastomer bearing for load cells of the RN series is the ideal load introduction element for scales without guide elements and serves to damp mechanical vibrations and dynamic shocks in container, platform and roller table scales.

Design and principle of operationElastomer bearings are rubber-metal composites made of neo-prene and stainless steel. Even with small dimensions, they ensure a large spring excursion and therefore a high degree of damping.If the load bearing implement is displaced by more than 4 mm (6 mm for rated loads of between 6 t and 13 t) in the horizontal direction, measures for restricting sideways play (e.g. stops) must be implemented in the construction of the load bearing implement. Suitable measures must be provided on the con-struction of the load bearing implement to prevent it from raising up.The load cell and the bottom of the self-aligning bearing are not included with the elastomer bearing.

ApplicationThe self-aligning bearing for load cells of the RN series is partic-ularly suitable for container and platform scales due to its low installation height.

Design and principle of operationThe self-aligning bearing consists of a self-aligning bolt, a top plate (self-aligning bearing top portion) and a base plate (self-aligning bearing bottom portion). The self-aligning bolt allows the top plate (i.e. and the load bear-ing implement) to follow horizontal displacements (e.g. due to temperature fluctuations) with a swivel movement. Due to the design of the self-aligning bolt, a restoring force is created which is based on the amount of displacement and the applied load. If the load support is displaced by more than 4 mm (up to 5 t rated load), 7 mm (up to 13 t rated load) or 10 mm (up to 60 t rated load) in the horizontal direction, measures for restricting side-ways play (e.g. stops) must be implemented in the construction of the load bearing implement. Suitable measures must be pro-vided on the construction of the load bearing implement to pre-vent it from raising up.The load cell is not included with the self-aligning bearing.

Siemens WT 01 · 20024/32


RN series



Dimensions of combination mounting unit for SIWAREX R load cells, RN series


Dimensions of force guidance for combination mounting unit of SIWAREX R load cells, RN series

Rated load A B C ØD E F ØG H J K L60, 130, 280 kg 80 118 60 9 40 57 39 10 8 12 520.5 t, 1 t 100 145 75 11 50 68 48 12.5 15 25 792 t, 3.5 t, 5 t 100 190 75 11 95 68 48 57.5 15 25 7910 t, 13 t 120 210 90 14 105 77.5 45 60 20 40 121.2

0.06 to 1 t version 2 to 13 t version

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Rated load A B C ØD H J K L M

0.5 t, 1 t 100 145 75 11 12.5 15 25 79 140

2 t, 3.5 t, 5 t 100 190 75 11 57.5 15 25 79 140

10 t, 13 t 120 210 90 14 60 20 40 121.2 160

Application

The self-aligning combination mounting unit for load cells of the RN series is particularly suitable for implementation in container, platform and roller table scales due to its low installation height.


The combination mounting unit consists of a self-aligning bolt, oscillation limitation, protection against raising up, a top plate and a base plate.

The self-aligning bolt allows the top plate (and the load bearing implement) to follow horizontal displacements (e.g. due to tem-perature fluctuations) with a swivel movement. Due to the design of the self-aligning bolt, a restoring force is created which is based on the amount of displacement and the applied load. Oscillation limitation prevents excessive sideways displace-ments and reliably protects the load cell from damage. It can absorb a maximum horizontal force of Fh = 10 kN.

Protection against raising up prevents the load bearing imple-ment from raising up excessively, up to a maximum vertical force of Fv = 25 kN.


Application

The guide element can be implemented in addition to the com-bination mounting unit for load cells of the RN series. It is used when undesirable horizontal forces arise during the weighing process, e.g. due to mixing operations with container scales or acceleration of the material to be weighed with conveyor scales.


The guide element consists of two ball joint heads, a spacer and two flanges for installation on the combination mounting unit.

The add-on guide element can also be retrofitted to combination mounting units if unexpected lateral forces arise during opera-tion of the scale, provided that the combination mounting unit was installed in accordance with the requirements (see "Guide elements", page 4/37 ff.).

The guide element deflects horizontal forces up to 1.7 kN to the foundation and minimizes the influences acting on the load cell and the mounting component.

The load cell and the combination mounting unit are not included with the guide element.

Siemens WT 01 · 2002 4/33


CC series

Rated load 10 to 100 t

Dimensions of SIWAREX R load cell, CC series


Dimensions of self-aligning bearing for SIWAREX R load cells, CC series

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Rated load ∅ A B C ∅ D E F G ∅ H J Ball R

10 t, 25 t 73.0 82.5 12.0 58.0 6.5 1.8 64.0 31.8 M12x1.75, 11 deep 152

40 t, 60 t 105.0 127.0 34.0 82.5 8.0 11.0 87.0 58.7 M20x2.5, 20 deep 152

100 t 152.4 184.2 72.3 123.8 23.6 21.8 108.2 79.2 M20x2.5, 20 deep 432

Rated load

A B C D ØE F G H ∅ J K L M

10 t, 25 t 190 120 90 20 73 32 40 64 14 50 25 ½“

40 t, 60 t 274 160 110 30 105 72 40 87 18 50 25 ½“

100 t 385 200 150 40 152 133 40 108 18 50 25 ½“

Application

The compression load cell is particularly suitable for implemen-tation in container, hopper and vehicle scales.


The measuring elements are four square posts made of stainless steel. Four strain gauges are fitted to each post.

The load which acts centrally in the measuring direction causes the spring body to be elastically deformed. This generates a measured voltage which is proportional to the load.


Application

The self-aligning bearing for load cells of the CC series is partic-ularly suitable for implementation in container, hopper and vehi-cle scales.


The self-aligning bearing consists of three force-guiding pieces, a base plate and a top plate.

In combination with the load cell, these components form a com-plete self-centering unit. The top plate (and the load bearing implement) is able to follow horizontal displacements (e.g. due to temperature fluctuations) with a swivel movement. Due to the design of the self-aligning bearing, a restoring force is created which is based on the amount of displacement and the applied load.

If the load bearing implement is displaced by more than 8 mm in the horizontal direction, measures for restricting sideways play (e.g. stops) must be implemented in the construction of the load bearing implement. Suitable measures must be provided on the construction of the load bearing implement to prevent it from raising up.

The load cell is not included with the self-aligning bearing.

Siemens WT 01 · 20024/34


CC series



Dimensions of combination mounting unit for SIWAREX R load cells, CC series

Rated load A B C D E F G H J ØK L10 t, 25 t 190 150 188 150 110 20 20 20 20 18 13340 t, 60 t 250 200 273 190 150 30 30 25 30 22 182

Application

The self-aligning combination mounting unit for load cells of the CC series is particularly suitable for implementation in container, platform and roller table scales.


The combination mounting unit consists of three force-guiding pieces, a top plate, a base plate and oscillation limitation with protection against raising up.

In combination with the load cell, these components form a self-centering unit. The top plate (and the load bearing implement) is able to follow horizontal displacements (e.g. due to temperature fluctuations) with a swivel movement. Due to the design of the self-aligning bearing, a restoring force is created which is based on the amount of displacement and the applied load.

Oscillation limitation prevents the occurrence of excessive side-ways displacements and reliably protects the load cell from damage.

Protection against raising up prevents the load bearing imple-ment from raising up excessively.

Rated load Max. horizontal force Max. vertical force10, 25 t 10 kN 20 kN40, 60 t 15 kN 35 kN


Siemens WT 01 · 2002 4/35


K series

Rated load 2.8 to 280 t

Dimensions of SIWAREX R load cell, K series


Dimensions of self-aligning bearing for SIWAREX R load cells, K series

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Rated load a Ød ØD H k L R2.8 t 8 16.7 45 40 54 56 506 t 8 16.7 45 40 54 56 5013 t 12 24.5 55 44 59 68 6628 t 14 36 64 46 63.5 74 7260 t 20 52.7 90 50 76.5 90 100130 t 26 77.5 121 64 92 116 125280 t 45 114 165 80 114 170 183

Rated load Øa Øb ±0.1 Øc d e Øg h k s2.8 t 87 63 11 14 25 18 100 +0.5

Two drilled holes180°

2-1

6 t 87 63 11 14 25 18 100 +0.5 2-1

13 t 97 73 11 21 32 18 120 +0.5 2.5-1

28 t 108 84 11 - 28 - 136 +0.5 2.5-1

60 t 137 112 11 - 42 - 174 +0.5 Four drilled holes90°

3-1

130 t 176 148 11 - 52 - 220 +0.5 4-1

280 t 226 190 14 - 65 - 300 +0.6 6-1.2

Application

The compression load cell is particularly suitable for implemen-tation in container and hopper scales.


The measuring element is a solid cylinder made of stainless steel to which 4 strain gauges are applied.

Under the influence of the load acting centrally in the measuring direction, the spring bodies (and the strain gauges with friction-locked installation) are elastically deformed. This generates a measuring signal voltage that is proportional to the load.

The rated measuring path of the load cell is dependent on the rated load and lies between 0.23 and 2.67 mm.

Application

The self-aligning bearing for load cells of the K series is particu-larly suitable for implementation in container and hopper scales.


The self-aligning bearing consists of two pressure plates.

In combination with the load cell, the pressure plates form a self-centering unit. The top plate (and the load bearing implement) is able to follow horizontal displacements (e.g. due to temperature fluctuations) with a swivel movement. Due to the design of the self-aligning bearing, a restoring force is created which is based on the amount of displacement and the applied load.

If the load bearing implement is displaced by more than the value s in the horizontal direction, measures for restricting side-ways play (e.g. stops) must be implemented in the construction of the load bearing implement. Suitable measures must be pro-vided in the construction of the load bearing implement to pre-vent it from raising up.

The load cell is not included with the self-aligning bearing.

Siemens WT 01 · 20024/36


Grounding cable


Application example

Grounding cable, dimensions

Application

The highly flexible grounding cable is used to discharge para-sitic currents.


The grounding cable is 400 mm long and corresponds to an electrical bypass.

It protects the load cell from undesirable voltages which can occur e.g. when welding or as a result of lightning.

We recommend using one grounding cable for each load cell.

The load cell and the self-aligning bearing are not included with the grounding cable.

4/37Siemens WT 01 · 2002


Guide elements

Basic installation

Guide elements are used to maintain the position of the scales with reference to the foundation.

Guide elements are used when undesirable horizontal forces occur during the weighing process (e.g. due to mixing opera-tions with container scales or acceleration of the material to be weighed with conveyor scales). Guide elements can be used to maintain precision and reliability of the load cells and mounting accessories despite the occurrence of undesirable lateral forces.

The guide elements must ensure total freedom of movement of the load bearing element in the vertical direction for weight acquisition. At the same time, the lateral forces which may cause measurement errors or damage to the load cell must be absorbed. The guide elements must therefore absorb the maxi-mum lateral forces in the horizontal direction.

The guide elements should be as long as possible because this reduces the frictional forces and the likelihood of reciprocal ten-sion at the same time.

In general, a set of scales with three guide points is statically determined.

The position of the guide elements depends on the number of bearing points and the construction of the scales.

To prevent measurement errors, the following conditions always apply to the models listed:

• The guide elements must lie in the plane of load introduction into the load cell and on the same horizontal level

• The guide elements must be installed before adjustment of the scales

• It must be possible to move the ball joint heads or ball pins eas-ily by hand at every filling level of the scales

• The guide elements must not transfer any forces in the measur-ing direction

• The guide elements must resist any lateral forces that arise.

Depending on requirements, various types of guide elements can be used (e.g. lateral guide rods and round-head bolt guides).

Basic representation of force guidance with three- and four-point bearing position

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Siemens WT 01 · 20024/38


Guide elements


Lateral guide rods

Lateral guide rods consist of two ball joint heads which are linked via a connecting piece, and provide a very economical solution in comparison to round-head bolt guides (see page 4/39).

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Additive guidance for combination mounting unit (only of stainless steel)

External lateral guide rod with self-aligning bearing for load cells of the RN series

lateral guide rods can be mounted between the load bearing implement and the foundation with the mounting bracket.

Separate mounting of the lateral guide rod permits the layout to be individually adapted to on-site con-ditions.

It is important to note the following on installation:• The flexible head must be mounted

before the scales are adjusted and its flexibility must be checked.

• The ball joint head must be easy to move at every filling level of the scales.

Lateral guide rods can be mounted as standard mounting components either directly on the combination mounting units of load cells of the RN and SB series to divert horizontal forces up to 1.7 kN to the foundation,

or

Siemens WT 01 · 2002 4/39


Guide elements

Round-head bolt guide

Principle of the ball pin

Ball pin guide

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Bearing A of the load bearing implement is supported by two ball pins, and the two opposing bearings (B and C) are support-ed by the foundation. This means that A is fixed in the direction of the opposing bearing but can roll away force-free in the verti-cal direction.

Round-head bolt guides have the following characteristics:

• The measuring result is only affected by the relatively small roll-ing friction

• Since the bearing is guided precisely in the vertical direction, it is able to allow relatively wide vertical movements without rotational movement of the load bearing implement

• Great lateral forces can be transferred despite extremely com-pact construction.

The following should be adhered to during configuration:

• The longitudinal axis of the round-head bolt guide should be located at the same height as the load introduction of the weighing cells and at the same horizontal level

• The internal and external bearing brackets must lie at right angles to the longitudinal axis.

Siemens WT 01 · 20024/40


Bending support points


Bending support points

Container weighing with two bending support points and one load cell

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For scales with less stringent demands on precision (e.g. fill lev-el weighing applications), only one load cell and two bending support points can be used for a three-point bearing instead of three load cells.

With a four-point bearing, two load cells and two bending sup-port points can be used for fill level weighing.

The layout with bending support points is a particularly econom-ical solution in which horizontal forces can be absorbed at the bearing level. This means that additional fixing is not necessary. If large horizontal forces occur outside the bearing plane (e.g. wind forces), additional precautions must be taken.

Under the following conditions, a set of scales that is equipped with bending support points can achieve an accuracy of between 1% and 2%:

• The container must be of symmetrical design

• Equal load distribution must be ensured even with a full con-tainer

• No variations in the center of gravity are permitted (e.g. caused by heaped objects)

• The distance between the load cell and bending support point must be as great as possible

• The bending support points must be mounted so that a tilting line results. For example, two bending support points must lie with their arms on a common line or the surfaces of their arms must lie on a common surface.

If there is are differences in temperature between the container and the foundation, the resulting differences in distance between the support points must be compensated by one fixed bearing and one moveable bearing. The fixed bearing and the moveable bearing have the same dimensions. The fixed bearing is bolted to both the foundation and the load bearing implement. The moveable bearing is only secured to the foundation or only to the load bearing implement. The contact surface which is not secured serves as a sliding surface. The direction of sliding is determined by two side guides that are mounted on the load bearing implement or foundation.

Siemens WT 01 · 2002 4/41


External oscillation limiter

External oscillation limiter

Basic representation of external oscillation limitation with protection against raising up

Application

External oscillation limiters minimize horizontal displacement of the weighing system and can be installed separately in the load bearing implement unit by the customer.


The oscillation limiter can be implemented with a bolt which is centered in a large drilled hole.

In the schematic diagram at the left, a protective mechanism against raising up has also been integrated which limits raising up of the load bearing implement.

Siemens WT 01 · 20024/42

Technical descriptionBasis for configurations

Number of load cells

The three-point bearing is static and provides a stable setup for every application.

The three-point bearing should therefore be preferred to the four-point or multi-point bearing wherever possible.

If a four-point or multi-point bearing is used and settling of the foundation expected, and if the supported system (also under load) is resistant to bending and warping, it must be expected in extreme cases that only two load cells lying on the diagonal will support the entire load.

If settling of the foundation can be ruled out, weight distribution on the load cells must be examined when the four-point or multi-point bearing is used. If the load distribution is unequal, com-pensation can be achieved by under-loading the load cells that carry a less than equal share of the total load.

Force bypass

Force bypasses occur when part of the load is deflected away from the load cells into the foundation.

The reason for force bypasses can vary (e.g. support by foreign bodies, friction, strain, etc.).

Prevention of force bypasses is essential because they cause measurement errors.

Rated load of load cells

The rated load is selected at maximum loading taking into account the center of gravity and load distribution over the indi-vidual load cells. The rated load is selected based on the load cell with the maximum load. It must be investigated whether the static load of the load cells is superimposed by a dynamic force. In this case, the rated load for the load cell must be calculated as the sum of the static load and the maximum dynamic peak force.

Example: See also "Configuration aid 1"

Number of load cells 4 Empty weight of container1.2 tMaximum capacity 1.8 t

Total load 3 t For even load distribution, without dynamic interferences

Each of the 4 load cells is loaded with 3 t / 4 = 750 kg since the load is distributed evenly.

When the load cells are rated and selected, the calculated rated load is increased by approximately 20 % for safety reasons (i.e. the required rated load for the load cells is 750 kg × 1.2 = 900 kg).

The next higher rated load step of 1 ton must therefore be selected.

Overview of load cells with standard mounting accessories

1) RN 0.5 to 10 t:- Shield connected to load cell housing- Shield not led out of cable.

Load cell series For use in Rated load Cable connection Standard mounting components

Function Color

BB Small-scale conveyor, container and platform scales

10 to 200 kg EXC + EXC –SIG +SIG –Shield

GreenBlackWhiteRedTransparent

Base plate with overload protection, elastomer bearing, combination mounting unit

SB Conveyor, container, platform and overhead rail scales

0.5 to 5 t EXC + EXC –SIG +SIG –Shield


Base plate with overload protection, elastomer bearing, combination mounting unit,guide element only for combination mounting unit made of stainless steel

RN Conveyor, container, platform and roller table scales

60 kg to 60 t EXC + EXC –SIG +SIG –Shield1)

PinkGrayBrownWhiteTransparent

Elastomer bearing, self-aligning bearing, combination mounting unit; guide element only for combination mounting unit made of stainless steel

CC Container, hopper and vehicle scales

10 to 100 t EXC + EXC –SIG +SIG –Shield


Self-aligning bearing, combination mounting unit

K Container and hopper scales 2.8 to 280 t EXC + EXC –SIG +SIG –Shield

RedWhiteBlackBlueTransparent


4/43Siemens WT 01 · 2002


Configuration example 1

Configuration

Container on RN series load cells and combination mounting unit

Description

Example 1: Container weighing

The upright container has a total center of gravity S which lies above the level of the load cells.

It is supported on 4 brackets (specified by the container manu-facturer), has an empty weight (i.e. dead load) of 1.2 t and a maximum capacity of 1.8 t. The load is evenly distributed over all 4 load cells.

The scales are used in intrinsically-safe areas.

Note

A three-point bearing of the container is static and represents a stable state (see page 4/42).

Selection of load cells and mounting components

The rated load is determined (as described on page 4/42) as 1 t.

For the above example, four SIWAREX R load cells of the RN series with a rated load of 1 t were used because the high-quality precision RN load cell features an extremely low constructional height.

Self-aligning combination mounting units were used as the mounting components because, apart from the self-alignment function and oscillation limitation, they also provide protection against raising up. Protection against raising up can absorb a vertical force of up to 10 kN. If larger "raising up" forces occur (e.g. due to high winds), the container must also be equipped with an additional natural disaster protection system.

Configurator for container weighing (basic configuration)

Item Description Order No. Selection criterion Number in example

1 SIWAREX R RN series, rated load 1 t, C3, with EEx ib II C T6 protection rating

7MH5 101-4AD01 High-quality ring-torsion load cell with low constructional height, ideal for container weighing

4

2 Combination mounting unit for load cells of the RN series, 1 t, made of stainless steel

7MH4 132-4AC11 Provides the self-aligning function with oscillation limitation as well as protection against raising up

4

3 Grounding cable 7MH3 701-1AA1 For discharging undesirable currents 4

Siemens WT 01 · 20024/44



Basis for configurations

Configuration

Container weighing with RN series load cells and self-aligning bearing

Description

Example 2: Container weighing

The suspended container has a total center of gravity S which lies below the level of the load cells.

It is supported on 3 brackets, has an empty weight (i.e. dead load) of 1.2 t and a maximum capacity of 1.8 t. The container has a diameter of 1 m. While the individual components are being weighed, a chemical reaction occurs which raises the tempera-ture of the container and its contents from 18 °C to 55 °C.


It is recommended that three SIWAREX R load cells of the RN series with a rated load of 2 t be used (rated load is determined as described on page 4/42). The load cells of the RN series were selected due to their low constructional height.

Self-aligning bearings are used as the mounting components because the container is suspended and cannot raise up off the self-aligning bearing.

The container diameter will increase by 0.4 mm due to the tem-perature increase of 37 K.

Since the self-aligning bearing permits a maximum oscillating movement of ± 4 mm, it is able to absorb the temperature increase of the container.

Oscillation limitation is not necessary because there is a small gap of b = 3 mm in width between the container and the plat-form. In this case, the platform acts as the oscillation limitation.

If the width of the gap is larger in other applications, you must decide whether to use combination mounting units instead of the self-aligning bearing or whether an external means of oscillation limitation should be implemented (see page 4/46).

Configurator for container weighing (basic configuration)


1 SIWAREX R RN series, rated load 2 t, C3, without EEx

7MH5 101-4GD00 High-quality ring torsion load cell with low constructional height, ideal for container weighing

3

2 Self-aligning bearing bottom unit for load cells of the RN series, 2 t, made of stainless steel

7MH4 132-4AG11 Allows temperature expansions to be followed without interfering reactional forces being directed into the load cell

3

3 Self-aligning bearing top unit for load cells of the RN series, 2 t, made of stainless steel

7MH4 132-4KK11 3


4/45Siemens WT 01 · 2002



Configuration

Container with agitator on RN series load cell and elastomer bearing

Description

Example 3: Mixer weighing

The suspended container has a total center of gravity S which lies below the level of the load cells.

It is supported on three brackets, has an empty weight (i.e. dead load) of 2.8 t and a maximum capacity of 4.5 t.

To improve mixing of the individual components, an agitator is mounted on the container which also operates during the weigh-ing process.


It is recommended that three SIWAREX R load cells of the RN series with a rated load of 3.5 t be used because the high-quality precision RN load cell has an extremely low constructional height (the rated load is determined as described on page 4/42).

Self-centering elastomer bearings are used as the mounting components to minimize vibrations caused by the mixer.

The elastomer bearing permits a maximum oscillation path of ± 4 mm.

Oscillation limitation is not necessary because there is a small gap of 3 mm in width between the container and the platform.

If the width of the gap is larger in other applications, stops or external oscillation limiters (see page 4/46) must be provided.

Configurator for mixer weighing (basic configuration)


1 SIWAREX R RN series, rated load 3.5 t, C3, without EEx

7MH5 101-4LD00 High-quality ring torsion load cell with low constructional height, ideal for container weighing

3

2 Self-aligning bearing bottom unit for load cells of the RN series, 2 t, made of stainless steel

7MH4 132-4AG11 For vibration damping to minimize the effects on the load cell

3

3 Elastomer bearing for load cells of the RN series, 2 t, made of neoprene and stainless steel

7MH4 130-4KE11 3


Siemens WT 01 · 20024/46



Basis for configurations

Configuration

Roller table weighing on SB series load cell and combination mounting unit with guide

Description

Example 4: Roller table weighing

The roller table is supported on 4 load cells (as specified by the equipment manufacturer), has a weight of 500 kg (i.e. dead load) and weighs containers of up to 1000 kg.

The dead load is equally distributed over the 4 load cells. In a worst case scenario, the weight of the container is distributed over only 2 load cells.

For production reasons, the container cannot be halted on the conveyor for the weighing process.

Note

A three-point bearing of the container is static and represents a stable state (see remark on page 4/42).


It is recommended that four SIWAREX R load cells of the SB series with a rated load of 1 t be used because the load cells of the SB series are capable of absorbing high lateral forces in the preferred direction (rated load is determined as described on page 4/42).

Self-aligning combination mounting units (only of stainless steel) with additive guide elements which transfer lateral forces of up to 1.7 kN are used as the mounting components.

The guide elements can deflect the lateral forces, caused when the container hits each roller, directly to the foundation. This pro-tects the load cells from interference and the accuracy and reli-ability of the components are maintained.

The combination mounting unit also offers protection against raising up for vertical forces of up to 10 kN.

Configurator for roller table weighing (basic configuration)


1 SIWAREX R SB series, rated load 1 t, C3, without EEx

7MH4 105-4AC01 Rugged shear beam load cell, ideal for platform and conveyor scales

4

2 Combination mounting unit for load cells of the SB series, 2 t, made of stainless steel

7MH4 135-4DC11 Provides the self-aligning function with oscillation limitation as well as protection against raising up

4

3 Guide element for combination mounting unit for load cells of the SB series, 1 t, made of stainless steel

7MH4 135-4DQ12 Centers the scale in relation to the foundation when lateral forces occur continuously

4


Siemens WT 01 · 2002 5/1

5/2 Information and ordering facilities on the Internet and on CD-ROM

5/3 Subject index

5/4 Order No. index

5/5 General license conditions for software products for automation

5/10 Conditions of sale and delivery

Appendix

5/2 Siemens WT 01 · 2002

AppendixInformation and ordering facilities on the Internet and on CD-ROM

Appendix

A&D in the WWW A detailed knowledge of the range of products and servic-es available is essential when planning and configuring au-tomation systems. It goes without saying that this infor-mation must always be fully up-to-date.

The Siemens Automation and Drives Group (A&D) has therefore built up a compre-hensive range of information in the World Wide Web, which offers quick and easy access to all data required.

Under the address

http://www.siemens.de/automation

you will find everything you need to know about products, systems and services.

Product selection using the Interactive Catalogs

Detailed information together with convenient interactive functions: The interactive catalogs CA 01 and ET 01 cover more than 80,000 products and thus provide a full summary of the Siemens Automation & Drives product base.

Here you will find everything that you need to solve tasks in the fields of automation, switchgear, installation and drives. All information is linked into a user interface which is easy to work with and intuitive.

After selecting the product of your choice you can order at the press of a button or by fax or by online link.

Information on the interactive catalogs can be found in the Internet under

http://www.siemens.de/automation/ca01

or on CD-ROM:

Automation and Drives, CA 01Order No.: E86060-D4001-A110-B2-7600

Electrical installation technology, ET 01 Order No.: E86060-D8200-A107-A2-7600

Easy Shopping with the Siemens Mall

The Siemens Mall is the virtual department store of Siemens AG in the Internet. Here you have access to a huge range of products presented in elec-tronic catalogs in an informati-ve and attractive way.

The Siemens Mall enables the whole procedure from selec-tion through ordering to tra-cking of the order to be carried out online via the Internet.

Numerous functions are avail-able to support you. For example, powerful search functions make it easy to find

the required products, which can be immediately checked for availability. Customer-spe-cific discounts and preparati-on of quotes can be carried out online as well as order tra-cking and tracing. The Siemens Mall is in the Internet under:

http://www.siemens.de/automation/mall

Further Internet addresses in this catalog

Direct entry in the Weighing Technology can be found at:http://www.siwarex.com

5/3Siemens WT 01 · 2002

AppendixSubject index

Appendix

Page

AA&D online services 5/2Accessories SIWAREX U, M, A and P 2/14

BBase plate with overload protection for BB and SB series load cells

3/3, 3/7

Basis for configurations 4/42Bending support points 4/40

CCables 2/12, 2/13, 2/14Combination mounting unit for BB, CC, RN and SB series load cells

3/3, 3/7, 3/9

Commissioning made easy 1/4Configuration aid for SIWAREX in potentially explosive atmospheres

4/22

Configuration aids for weighing electronics 4/16Configuration examples 4/43Configuration packages SIWAREX U, M, A 2/11

DDistribution box 2/8, 2/14

EElastomer bearings for BB, SB and RN series load cells

3/3, 3/7, 3/8

Ex interface Ex-I 2/9External oscillation limiter 4/41

GGrounding cable 3/3, 3/9, 4/36Guide element for the combination mounting unit for RN and SB series load cells

3/3, 3/7, 3/9

Guide elements 4/37

IInstallation material for SIWAREX U, M, A 2/12Integrated automation solutions with weighing technology

1/3

JJunction and distribution box SIWAREX JB 2/8, 2/14

LLateral guide rods 4/38Load cells and mounting components

BB seriesCC seriesK seriesRN seriesSB series

4/264/334/354/314/28

Load cells, basic design 4/23Load power supply PS 307 2/12

MMounting components, description 3/3Mounting components, overview and design 4/24Mounting components for BB and SB series load cells

3/7

Mounting components for K and CC series load cells

3/9

Mounting components for RN series load cells 3/8, 3/9

PPCS 7 1/4, 2/2, 2/3,

4/4, 4/9Plant availability 1/4Pressure plates for K series load cells 3/9Printer for SIWAREX M, A 2/13PS 307 load power supply 2/12

RRemote displays 2/13Round-head bolt guide 4/39SSelf-aligning bearing for CC, K and RN series load cells

3/3, 3/8, 3/9

SIWAREX A 2/4, 2/11, 4/12SIWAREX AWS 2/5SIWAREX Batch 2/11, 4/11SIWAREX M 2/3, 2/11, 4/5SIWAREX P 2/5, 2/14SIWAREX Pi / IS 2/9, 2/14SIWAREX R load cells 3/2SIWAREX U 2/2, 2/11, 4/2SIWAREX U, M, A configuration packages 2/11SIWATOOL 1/4, 2/2, 2/3,

2/11, 4/2, 4/5, 4/12

SoftwareSIWAREX BatchSIWATOOL

2/11, 4/111/4, 2/2, 2/3, 2/11, 4/2, 4/5, 4/12

Software license conditions 5/5

TTechnical description for weighing electronics 4/2Technical specifications

Ex interface Ex-IJunction and distribution box SIWAREX JBLoad cells SIWAREX RSIWAREX U, M, A and P

2/92/83/4, 3/52/6, 2/7

Totally integrated - in the SIMATIC PCS 7 process control system

1/4

UUniform SIMATIC system basis 1/3

WWeighing systems in automation 1/2

Page

Siemens WT 01 · 20025/4

AppendixOrder No. index

Page6GF6GF6 520-1LB 2/136GF6 520-2HA 2/136ES56ES5 700-8MA11 2/146ES5 750-2AA11 2/126ES5 750-2AA21 2/12, 2/136ES5 750-2AA31 2/12, 2/136ES5 750-2AB11 2/12, 2/136ES5 750-2AB31 2/12,6ES5 931-8MD11 2/146ES76ES7 307-1BA00-... 2/126ES7 307-1EA00-... 2/126ES7 307-1KA00-... 2/126ES7 390-1AB60-... 2/126ES7 390-1AE80-... 2/126ES7 390-1AF30-... 2/126ES7 390-1AJ30-... 2/126ES7 390-1BC00-... 2/126ES7 390-5AA00-... 2/126ES7 390-5CA00-... 2/126ES7 392-1AJ00-... 2/126ES7 392-2XX00-... 2/12

7MH7MH3 105-... 3/67MH3 115-... 3/97MH3 701-... 3/97MH4 103-... 3/67MH4 105-... 3/67MH4 106-... 3/67MH4 115-... 3/87MH4 125-... 3/97MH4 130-... 3/87MH4 132-... 3/8, 3/97MH4 133-... 3/77MH4 134-... 3/97MH4 135-... 3/77MH4 136-... 3/97MH4 205-... 2/147MH4 215-... 2/147MH4 407-... 2/12 to 2/147MH4 421-... 2/117MH4 483-... 2/117MH4 553-... 2/117MH4 583-... 2/117MH4 593-... 2/117MH4 601-... 2/11

Page7MH (continued)7MH4 583-... 2/117MH4 593-... 2/117MH4 601-... 2/117MH4 607-... 2/117MH4 683-... 2/117MH4 693-... 2/117MH4 702-... 2/11, 2/13, 2/147MH4 710-... 2/147MH4 811-... 2/147MH5 101-... 3/6C7C71000-B5900-C44 2/12C71000-B5976-C44 2/12C71000-T5974-C29 2/13C74000-B5900-C5 3/9C74000-B5976-C5 3/9S70S70-0350R-S4 2/12S70-0351R-S4-B 2/12

Page

5/5Siemens WT 01 · 2002

Appendix

General license conditionsfor software products for automationAppendix

1. One Off Licence

1.1 The Customer is supplied with the software products detailed in the Confirmation of Order/Software Product List (hereinafter referred to as "Software") on the data medium indicated therein. The Documen-tation relating to the Software must be purchased separately, unless the Confirmation of Order states that it shall be supplied together with the Software.

1.2 The Customer is granted the non-exclusive right to use the Software for an unlimited period of time on the Hardware indicated in the Con-firmation of Order, although each Software supplied to the Customer and - if the Customer has been granted a Copy Licence - each copy made by the Customer shall only be used on one item of Hardware at one time. Provided that the Customer is not merely granted a pro-duction or run time licence, he shall be entitled to use the Software for a limited time on the appropriate hardware in order to generate a custom application.

1.3 Unless expressly prohibited on the data medium, the Customer shall be entitled to make up to three (3) copies of each item of Software, which shall be used exclusively for back-up purposes. Otherwise, the Customer shall not be entitled to make copies of the Software un-less Siemens has previously granted him a Copy Licence in writing.

1.4 The Customer shall not be entitled to modify, redevelop or translate the Software, nor may he extract individual parts. Furthermore, the Customer shall not be entitled to remove alphanumeric identifiers, trademarks or details of copyright from the date medium and, insofar as he is entitled to make copies of the Software, shall copy these de-tails without alteration. The aforementioned regulation applies equal-ly to the Documentation supplied in accordance with Clause 1.1.

1.5 The Customer shall be entitled to transfer the right to use the Soft-ware granted to him in accordance with Clause 1 to a third party, provided he makes a written agreement with the grantee in conform-ance with all the conditions contained in this Clause. The Customer shall, however, only grant to third parties the right to use the Software in conjunction with the Hardware specified in Clause 1.2 for which he has been granted the right to use.

The Customer is aware that - e. g. by virtue of its nature or applica-tion - the Software including the Documentation relating to it may be subject to an export approval in accordance with the German Foreign Trade and Payments Law (see also note on bill of delivery or invoice). The Customer shall assume responsibility for obtaining the necessary export approvals and shall make delivery only in accor-dance with the stipulations of such approval.

2. Copy license

2.1 If Siemens has granted the Customer a copy licence to a Software, the Customer shall receive a written confirmation of the number of copies he is entitled to make of the data medium supplied with One Off Licence, which represents the precondition for the Copy Licence. The Customer is granted for an unlimited period of time the non-exclusive and non-transferable right to make the number of copies specified in the Confirmation of Order, use the copies in accordance with Clause 1 and grant the right to use these copies to third parties.

2.2 The Customer shall observe the instructions on copying that are de-livered to him together with the Copy Licence. Furthermore, the Cus-tomer shall keep a record of the whereabouts of all the copies, which must be open for inspection by Siemens on request.

3. Warranty

3.1 Siemens shall remedy defects in the data media by replacement.

3.2 Warranty shall be assumed for the Software in accordance with the warranty class. Software shall be divided into classes A, B and C. The classification can be determined from the Confirmation of Order/Software Product List or from the catalogues and product manuals current at the time of deliverySuch reproducible deviations from the relevant Documentation dem-onstrated by the Customer and appearing in the last data medium delivered to the Customer shall be deemed to be defects in the Soft-ware.

3.3In the case of Software of warranty class A, Siemens shall remedy defects by delivery of a data medium with the new product release/version. Until such time as a new product release/version is deliv-ered, Siemens shall provide an interim solution bypassing the defect, provided that it is feasible at reasonable cost and that the Customer can demonstrate that he is prevented from processing im-perative jobs due to such defect. In the case of Software of warranty class B, Siemens shall be obliged to provide the Customer on request with such means of correcting or bypassing the defects as are available to Siemens.In the case of software of warranty class C, Siemens has no obliga-tion to correct defects.

3.4 If Siemens has granted the Customer a Copy Licence, the Customer shall be entitled to make a number of copies corresponding to the Copy Licence of the new product release/version delivered in accor-dance with Clause 3.3. Clause 2 also applies accordingly.

3.5 The defect diagnosis and correction shall be made at Siemens' option either at the Customer's or at Siemens' premises. If a (repair-) service agreement exists between the Customer and Siemens, de-fect diagnosis and correction may also be carried out at the place where the Hardware, on which the Software is used in accordance with Clause 1.2, is installed. The Customer shall provide Siemens with all the documents and in-formation in his possession necessary for correcting the defect. If Siemens corrects the defect at the Customer's premises, the Customer shall provide Siemens, free of charge, with access to the relevant Hardware and Software and undertakes to provide the appropriate working conditions with suitable operating personnel to ensure that the work can be executed efficiently. If no (repair-) ser-vice agreement has been made, the Customer shall reimburse Siemens for any travelling and accommodation costs incurred by sending personnel to the place of installation.

3.6 If any defect cannot be corrected within a reasonable period of time or bypassed so as to be acceptable to the Customer, the Customer shall be entitled to demand a price reduction or to cancel the con-tract.

3.7 The warranty period for all Software shall be twelve (12) months from the date of delivery of the data medium with the Software in accor-dance with Clause 1.1 to the Customer or from the date of notification of readiness for dispatch. For copies made within the framework of a Copy Licence, the warranty period of the copy sample (One Off Licence) shall apply.

3.8 Siemens assumes warranty for Software extended by the Customer via an interface provided for this purpose by Siemens, but only up to such interface.

3.9 All other claims under warranty are hereby excluded, except where liability is binding on the grounds of intent, gross negligence or the absence of promised characteristics.

Siemens WT 01 · 20025/6

Appendix

General license conditions for software products for automation

4. Software Maintenance ServiceFor One Off Licences and Copy Licences, a Software Maintenance Service comprising automatic delivery of Updates and Upgrades can be agreed upon against separate order. Siemens shall then en-sure for the duration of the Software Maintenance Service Contract that the Software is kept up-to-date with the newest official release.

5. Payment

5.1 Siemens will invoice separately at the rates in force at the time for the following:

- Support with the start-up of the Software;- Support with analysing and correcting defects due to improper

use or any other circumstances not inherent in the Software.

5.2 Payment shall be effected immediately after delivery/completion of service and receipt of invoice

6. Liability

6.1 If the Supplier is responsible for a delay in delivery, the Purchaser who can establish credibly that he suffered a loss from such delay may claim agreed compensation of 0.5 % for every completed week of delay but in no event shall the aggregate of such compensation exceed a total of 5 % of the price of that part of the Supplies which, because of the delay, could not be put to the intended use.

6.2 Purchaser's claims for compensation which exceed the limits spec-ified in para. 6.1. shall be excluded in all cases of delayed delivery even after expiry of an extension of time that may have been granted to the Supplier. This exclusion shall not apply where in cases of wilful misconduct or gross negligence there is a legally binding liability on the part of the Supplier. Purchaser's right to terminate the contract shall remain unaffected after the expiry of an extension granted to the Supplier that did not result in delivery.

6.3 Siemens shall be fully liable for death or personal injury arising from its negligence and shall be responsible for direct damage to proper-ty up to an amount of EUR 500,000 per event where such damage is caused by Siemens' negligence. In the event of loss of or damage to data media, Siemens shall not be liable for the cost of restoring lost data.

6.4Any further claims for damages from the Customer other than those expressly specified in this Contract, whatever the cause in law, in particular claims on the grounds of damages resulting from consul-tation, support with the introduction of the Software or as a result of software errors, are excluded insofar as liability is not binding, e. g. in the case of damage to items for private use or in cases of wilful misconduct, gross negligence, the absence of characteristics prom-ised to the Customer or of the fundamental non-performance of con-tractual obligations. However, liability for damages arising from the fundamental non-performance of contractual obligations shall be limited to the foreseeable damage normally covered by a contract except in cases of wilful misconduct or gross negilgence. This limi-tation does not imply a change in the burden of proof to the detriment of the Customer.

6.5No change in the burden of proof to the detriment of the Purchaser is involved in the above stipulations as per para 6.2 to 6.4

7. Industrial Property Rights and Copyright

7.1 If a third party, because of an infringement of an industrial property right or copyright (hereinafter called "Property Rights") by products furnished by the Supplier and used in conformity with the contract, asserts legitimate claims against the Purchaser, the Supplier shall be liable to the Purchaser as follows:a) At his own option and expense, the Supplier shall either obtain a right to use the product, modify the product so as not to infringe the Property Rights or replace the product. If this is not possible to the Supplier on acceptable terms, he shall have to take back the prod-uct and refund the purchase price.b) Supplier's aforesaid obligations shall exist only on condition that the Purchaser immediately notifies the Supplier in writing of the claims asserted by the third party, that he does not acknowledge an infringement and that all countermeasures and settlement negotia-tions are reserved to the Supplier. If the Purchaser stops using the product to reduce the damage or for other important reasons, he shall be obliged to make it clear to the third party that the suspended use does not mean acknowledgment of an infringement of Property Rights.

7.2 Claims of the Purchaser shall be excluded if he is responsible for an infringement of Property Rights.

7.3 Claims of the Purchaser shall also be excluded if the infringement of Property Rights was caused by specific demands of the Purchaser, by a use of the product not foreseeable by the Supplier or by the product being altered by the Purchaser or being used together with products not provided by the Supplier

7.4 Further claims against the Supplier due to infringement of Industrial Property Rights and Copyright shall be excluded. However, Clauses 6.3 to 6.5 shall remain unaffected and so shall be Purchaser's right to terminate the contract.

8. Export Approvals, Sub-Agreements, Assignment, Law

8.1 Export of the Software including the data and Documentation relat-ing to it may be subject to approval - e. g. by virtue of its nature or application - (see also notes on bills of delivery and invoices).

8.2 Any sub-agreements must be made in writing. Siemens has the right to transfer its rights and obligations under this Contract to a third par-ty, unless the Customer objects in writing within four (4) weeks from being notified of such intention. Siemens' notification shall include details of the Customer's right to object

8.3 Except where precluded by statute, the place of jurisdiction shall be the domicile of Siemens head office and the governing law shall be the law of the Federal Republic of Germany.

Siemens WT 01 · 2002 5/7

Appendix

Notes

Siemens WT 01 · 20025/8

Appendix

Notes

Siemens WT 01 · 2002 5/9

Appendix

Notes

Siemens WT 01 · 20025/10

AppendixConditions of sales and delivery

Subject to General Conditions of Supply and Delivery for Products and Services of the Electrical and Electronics Industry and to any other conditions agreed upon with the recipients of catalogs.

The technical data, dimensions and weights are subject to change unless otherwise stated on the individual pages of this catalog extract.

The illustrations are for reference only.

The General Conditions for Software Products for Automation shall apply to software products.

Export

The products listed in this catalog/price list may be subject to European/German and/or US export provisions.

Any export requiring approval is therefore subject to authoriza-tion by the relevant authorities.

For the products listed in this catalog/price list, the following ex-port regulations must be adhered to in accordance with current-ly valid regulations.

AL Number of the German export listProducts with a code other than "N" must be ap-proved for export.The export codes of the respective data medium must also be adhered to for software products.

Goods labeled with "AL not equal to N" are sub-ject to European or German export authorization when being exported out of the EU.

ECCN Number of US export list(Export Control Classification Number).

Products with a code other than "N" require ap-proval for re-export to certain countries.The export codes of the respective data medium must also be adhered to for software products.

Goods labeled with "ECCN not equal to N" are subject to US reexport authorization.

Even without a label, or with label "AL: N" or "ECCN: N", authori-zation may be required due to the final whereabouts and pur-pose for which the goods are to be used.

The AL and ECCN export codes specified in our confirmations, delivery notes and invoices apply.

Subject to change without prior notice.A&D/MP/e 5.96

7

Issued by Siemens AGAutomation and DrivesProcess Instrumentation and AnalyticsD-76181 KarlsruheGermany

Order No.: E86060-K6401-A101-A1-7600Printed in the Federal Republic of GermanyKG K 0901 10.0 SR 84 En / 115154

Siemens Aktiengesellschaft Order No. E86060-K6401-A101-A1-7600

Siemens AGAutomation and DrivesProcess Instrumentation and AnalyticsD-76181 KarlsruheTel. +49 (721) 595-28 11Fax +49 (721) 595-29 01

http://www.siwarex.com

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... For your local Siemens office please click on "Your partner" on our homepagehttp://www.siwarex.com

Subject to change

Any questions concerning ...• Load cells and mounting components• Electronics and system interfacing• Mechanical scale design

... then simply contact our

SIWAREX hotline / Technical Support... at

Tel.: +49 (721) 595-2811Fax: +49 (721) 595-2901E-mail: [email protected]: www.siwarex.com

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