advancements in physical layer with ff - fieldbus · 2013-02-08 · © 1994 – 2011 fieldbus...

Advancements in Physical layer with FF

Unnikrishnan R

Technical Support

© 1994 – 2011 Fieldbus Foundation 2

Agenda

Introduction to FF and FF Physical Layer

FF Physical Layer Components

FF Concepts

FF Wiring Topologies

FF technology and maintenance

Technology developments

Summary


What is Fieldbus?

HOST

Field Device

Fieldbus is an all-digital, serial, two-way communication protocol that

interconnects devices in the field such as sensors, actuators, and controllers.

FOUNDATION fieldbus also has the capability to distribute control applications across its

network in the field. Furthermore, it enables advanced diagnostics for all fieldbus

components and asset management tools resulting in higher plant availability.


Main components of physical layer

FF - Power Supply, Cables, Surge Protector, Terminators, Wiring Blocks,

Process interfaces etc

Wiring Block

HOST

Wiring Block FIELDBUS

TERMINATOR

SURGE PROTECTOR

PROCESS

INTERFACE

Ff POWER

SUPPLY

CONVENTIONAL

FIELD DEVICES

FIELDBUS

DEVICES

JUNCTION

BOX

Home Run Spurs

../../../../D630-D Drive/FF DOCUMENTS/FF Presentations/FieldConnex Modular Presentation/FieldConnex FPI-FF en.ppt

../../../../D630-D Drive/FF DOCUMENTS/FF Presentations/FieldConnex Modular Presentation/FieldConnex Surge Protector en.ppt


How to optimize FF Physical Layer?

Optimization of field devices by using proper segment design methodology

as well as segment revalidation tools where we can optimize loop checking

and commissioning time.

Usage of digital communication to achieve predictive intelligence through

advanced diagnostics and asset management of the plant.

Usage of features of the device to effect control in field which will optimize

lower bandwidth of 31.25kb/sec.


Fieldbus in Hazardous Area

The first step

Simplifying

validation

MAX power + FISCO

Re-inventing Intrinsic Safety

Redundant

FISCO


Enhancements in Fieldbus Technology

Ex-i (Entity) Concept

10.6 V @ 70 mA (Ex ia IIC)

Very Less No. of instruments,

very short trunk cable length,

complex proof of intrinsic safety

Ex-i (FISCO) Model

● 12.8 V @ 100 mA (Ex ia IIC)

● Less No. of instruments, short

trunk cable length , simple

proof of intrinsic safety

High Power Trunk Concept

● 28 V @ 500 mA

● Changeover to IS in the field

in acc. with FISCO Model

(physical layer)


FF Wiring Topologies in Hazardous Area


Spurs

Field Instruments

Basic Principles: Typical Topology

Power Supply

Advanced Diagnostic Module

Device Couplers with

Short-circuit protection

Trunk

Surge Protector

Terminator

Host


Spurs

Field Instruments


Segment Protectors

Trunk

Surge Protector

Terminator

Plant Asset

Management

Diagnostic Gateway


Why do we need Predictive Intelligence?

Maintenance Cost Reduction Drives End Users

40% of Mfg. Cost is Maintenance

50% of Maintenance is Corrective

10 times More expensive than preventative

maintenance

Preventative Maintenance is Done 25% of Time

5 Times More costly Than Predictive

Maintenance

60% of Preventative Maintenance is

Unnecessary

Lack of Proactive Maintenance strategy


What Does Foundation Fieldbus Enable?

FF is a digital plant architecture that uses the power of Predictive intelligence to

improve plant performance

FF Predictive intelligence helps to detect and correct potential problems before

they can affect Plant Performance

FF Predictive Diagnostics will help users develop a proactive maintenance

strategy

FF Predictive Diagnostics avoid unplanned shutdown and help end-user's reap the

real cost benefit of FOUNDATION technology during the operational phase of

the plant

Goal = Improved operational efficiency

Result = increase plant availability


Strategies to Minimize unplanned shutdowns

Time

Equipment health

100%

Minimum Device Health

FAILURE

Warning Level

Time to respond


Basic Principles: Diagnostic Functions Today

At the power supply

Measure signal level, noise, jitter, earth leakage…

At the operator station

Simple summary alarms

At the maintenance station

Expert system interprets measured data

Produce actionable information in clear text

Increase availability through pro-active handling of fieldbus as

manageable asset


FF Physical Layer Monitoring and Diagnosis


Recommendation for an ideal FF physical layer diagnostic tool

Measurements

Multi-meter Handheld

Tester

Handheld

Communicator

Oscilloscope Note-book

Bus Analyzer

Advanced

Diagnostic

Module

Segment voltage ● ● ● ●

Segment current ◙

Segment noise (low freq.) ● ● ●

Segment noise (high freq.) ●

Segment signal level ● ● ●

Segment signal jitter ●

Instrument signal level =

Instrument signal jitter

Instrument noise (individual)

Fieldbus termination = = ●

Segment earth fault (imbalance)

Device communication ● ●

Communication faults ●

Cable degradation (trending)

Device configuration ● ●

Remote access


Are you protected from EMI?

Ground faults

Fieldbus and power cables tied

together


Did they get it right?

Cable gland not tight

Seal missing


And corrosion as a consequence

Water ingress or worse:

Aggressive media


Will it hold next time?

Wear of surge protectors unknown


Fieldbus Cabinet Too hot? Unauthorized access?

Fan is not working

Door not closed

Water ingress


Is your topology protected?


Diagnostic Device Couplers



Improved and innovative spur fault protection:

Progressive spur short-circuit protection

Jabber protection – cuts off devices talking too much

Contact bounce protection – suppresses unintentional bounce

Reliable containment of gradual overload conditions

Protects operations from manual intervention and device failure


Jabber protection



Measures in the field:

Measures fieldbus signal conditions at the spur level

Reports changes all the way to Plant Asset Management

Feeds the expert system

Better advice – better knowledge – focused plant upkeep – fewer trips to the

field


Diagnostic Surge Protector


Diagnostic Surge Protector

Condition-based replacement

Monitors strike severity and count

Reports end of functional reserve to AMS

Instead of repetitive scheduled maintenance

Surely protects you from the next strike


Diagnostic Device Coupler + SPD


Water Ingress Sensor ELS-1


Water Ingress Sensor ELS-1

Monitoring the inside of the enclosure

Placed inside the enclosure of choice

Connects in parallel to the fieldbus segment

Sends alarm all the way to plant asset management

Know what the housing looks like on the inside


Take Control of your Control Cabinet


Take Control of your Control Cabínet

Diagnostic Gateway

With FF-H1 integration and Ethernet

Discrete, frequency, temperature and humidity inputs

Solid state high-power outputs

The cabinet becomes a supremely managed asset


With Diagnostics of Physical Layer We Can….

SEE what's going on in your physical layer

KNOW when and how to act

ACT in your Asset Management tool

Commission Segments

Monitor Segments Online

Predictive Fault finding of Segments

SEE KNOW ACT


Asset Management Integration

One Plant Asset Management

Includes fieldbus now as asset

Customary look and feel

Reduces required training

Reduces potential for errors

Open Architecture Integration:

AMS Suite

PRM

FieldCare

FieldMate

PACTware

OPC Interface

Automatic

Setup

Included

Experion PKS Station


Fieldbus in Hazardous Area

The first step

Simplifying

validation

MAX power + FISCO

Re-inventing Intrinsic Safety

Redundant

FISCO


General Purpose Area

Zone 2 To DCS

Zone 1

DART: Intrinsically safe High-Power Trunk

Redundant, three-port isolated

DART Power Supply

DART Segment Protectors

The intrinsically safe High-Power Trunk

protected by DART®

Intrinsically safe spurs

Ex ib IIC


Zone 1

DART: Intrinsically safe High-Power Trunk

More cable distance (compared to FISCO)

Higher device count (compared to FISCO)

Same installation throughout

Hot work on supplies, couplers, devices

For any fieldbus device:

Ex ib IIC


Comparison of Various Concepts


Summary

Fieldbus technology reduces effort in every phase of a project

Fieldbus is established as reliable technology

Advanced Diagnostic Tools bring transparency and simplicity

HPT and DART concept depending on power requirement

Various devices to provide maintenance information

Fieldbus itself is now an Asset in plant management


Questions?

Thanks [email protected]

advancements in physical layer with ff - fieldbus · 2013-02-08 · © 1994 – 2011 fieldbus...

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