e16 controls update 06.08

8/6/2019 E16 Controls Update 06.08

http://slidepdf.com/reader/full/e16-controls-update-0608 1/6

Phone: + 39 / 039 64214 1 Centro Direzionale ColleoniFax: + 39 / 039 64214 20 Agrate Brianza (Milan)

[email protected] www.comber.it

Control Systems

PLCMCCDCS

TI 0238 E - 06/08





Control Systems

Typically the control system comprises two local operator control panels at the filterdryer, a controlcabinet and a switch gear cabinet (MCC) located in a safe area. A single operator panel only is normallyused for vacuum dryers.

Main operator panel Secondary operator panel

The primary operator control panel includes a terminalwith colour display for the entering of machineparameters and for the display of process variables. Thesecondary operator control panel is intended for the

operation of the solids discharge valve and agitator functions as well as for the opening and closing of thefilter bottom. The operator controls of the local controlpanels are mounted in IP 65 rated stainless steelenclosures, all controls are rated intrinsically safe (EEx).

The local operator panels, the transmitters for product temperature, internal vessel pressure, vessel leveletc. required for the operation of the equipment, all safety and process related proximity switches and therequired control valves are connected with the control cabinet.

TI 0236 E - 06/08





Control Systems

The control cabinet with the PLC is designed for installation in a non-hazardous area. The control circuitsin the control cabinet are split into an intrinsically safe area connected to the non hazardous area withEEx i barriers.

Control cabinet Switch gear cabinet (MCC)

Installed in the control cabinet are the terminals for the intrinsically safe inputs and outputs (Picture left,upper right, blue), the inputs and outputs for the non hazardous area (Picture left, upper left), the EEx ibarriers (Picture left, lower right, green) and the PLC (Picture left, bottom, black).

The switch gear cabinet contains all switchgear such as interrupters, contactors, relays, etc., as requiredto operate the electrical equipment supplied with the equipment such as motors and vessel lamps.Frequency converters if included in the scope of deliveries will also be installed in the motor controlcabinet.

All electrical components are installed in IP 54 rated Rittal cabinets.

TI 0237 E - 06/08





Control Systems

The control system is based on a PLC with all components as required for the operation of the equipment(COMBER scope of deliveries) including the software and all relevant interlocks for the safe operation of the equipment.

The Siemens Simatic S7-300 series of PLC’s is typically used in Europe whereas in the Americas the

Allen Bradley SLC 500 series is typically used. The PLC’s are equipped with the required number of digital and analog input and output modules.

Integrated RS 485-, Profibus- and Ethernet-Interfaces permit data communication with other devices.This permits interfacing the PLC with a remote distributed control system (DCS) to permit remote controland monitoring of the equipment or data logging as required.

If no distributed control system (DCS) is available or planned on the installation site we recommend the

extension of the control unit software to provide for automated functions. These functions permit theautomatic operation of the equipment, and also permit memorizing a number of operating programs.Parameters and functions for the automatic operation are entered or selected on the operator controlpanel.

Alternatives to this conventional type of control system are available and include e.g. control systemsusing field bus devices.

TI 0239 E - 06/08





Control Systems

A Functional Design Specification (FDS) comprising the description of the system architecture and thesoftware specification for all functions as required is the basic document used for the design of the PLCcontrol system hardware and software.

Based on this FDS all other documents are developed such as terminal and circuit diagrams, cable lists,configuration diagrams, connection diagrams, part lists etc. as well as the software.

TI 0240 E - 06/08





Control Systems

The control system, electrical, instrumentation and software documentation supplied with the equipmentessentially comprises the following:

• Component list and data for electrical components

•

Part lists with all electric and electronic components• Connection diagrams

• Terminal diagrams

• Configuration diagrams for control cabinet, switch gear cabinet, operator control panels and junction boxes

• Circuit diagrams

• Cable lists

• Functional Design Specification (FDS) with system architecture and software specifications

• List of PLC inputs and outputs

• PLC - DCS interface configuration

• Proof of intrinsic safety

• Test certificates

• ATEX conformity declarations• Installation and operating manuals for instrumentation and electrical components

• FAT protocol for control system

• List of spare parts

• Operation and maintenance manual

TI 0241 E - 06/08

e16 controls update 06.08

Documents