Fieldbus Tutorial Part 1 - Fieldbus Overview

Fieldbus Overview

[File Name or Event]Emerson Confidential27-Jun-01, Slide 2

Agenda

Basic Concepts

Interoperability

Benefits from Fieldbus Installations

Availability of Fieldbus Devices


Foundation Fieldbus is the basis for modern control and automation products.

Advanced functions added to field instruments

Expand view for the operator

Enable migration of functions the field

Reduce wiring and installation costs

Reduce I/O equipment by one-half or more

Provide increased information flow to enable automation of engineering, maintenance, and support functions


What is Fieldbus?

Definition...

Control room

operator stations

Control systems

(DCS or PLC)

P

T

L

F

Fieldbus

A digital, two-way, multi-drop communication link among intelligent field devices and automation systems.


DCS

4 - 20 mA

Proprietary Bus

4 -20 mA 4 -20 mA

A Typical Plant Today


Today's Communications

Controller PLCGW PLC

ComputerGW

Remote I/O cards & termsRemote I/O cards & terms

Two wire Transmitters &Control Elements

PLC - DCS

PLC

PLC

Remote I/O

M

SimpleSensors &Switches

MotorDrives

ProgrammableController(PLC) Networks

DistributedControl SystemNetwork

Electrical Signals

4-20mA orproprietary

digital

ProprietaryBusses

ProprietaryInterfaces

Many different types of proprietary digital communications-Limited information from the field available to the control room.


DCS

A Plant with Fieldbus

High Speed Fieldbus (100 Mbits/s)*

Low Speed Fieldbus (31.25 Kbits/s)

*Fast Ethernet

Maintenance

A Plant with Fieldbus

Interoperable devices


Fieldbus Cable Types

Cable Type and Description Size Length

Type A (New) Shielded, twisted-pair

– H1: 31.25 Kbps #18 AWG 1900* m

– H2: 1.0 Mbps #22 AWG 750* m

– H2: 2.5 Mbps #22 AWG 500* m

Type B (Existing) Multi-twisted-pair, w/shield

– H1: 31.25 Kbps #22 AWG 1200* m

Type C Multi-twisted-pair, w/o shield

– H1: 31.25 Kbps #26 AWG 400* m

Type D Multi-core, w/o shield

– H1: 31.25 Kbps #16 AWG 200* m

* Spurs count in overall length


Fieldbus : more than just communication

DCS or

PLC

XMTR

4 -20 mA

MMI

TAG : FT-234A

VALUE : 456.5

UNIT : cuft/s

STATUS : Good, with

alarm at

400cuft/s not

acknowledgedXMTR


Freedom of Choice !

Allows digital instruments to be

connected onto a Fieldbus network and have

them communicate all available functionality

to each other and with the networked hosts.

TM


FunctionBlock(s)

TransducerBlock

ResourceBlock

FOUNDATION™

fieldbus

FOUNDATION Fieldbus Blocks, Trends, Alerts

Basic Components

µP

PluggedImpulse

Line

Electronics

Diagnostics

CommunicationDiagnostics

Trend

Alert


Automatic Address Assignment

This feature allows fast and safe commissioning of the Fieldbus Network!

No dip switches, no pre-configuration.


Unique Information is Maintained by Device


Standardized Function Block Application Designed For Process Industry Requirements

AI PID AO

PID AI


Fieldbus Function Blocks

Discrete Input

Discrete Output

Analog input

Analog Output

PID, PI, I Control

P, PD Control

Control Selector

Manual Loader

Bias/Gain Station

Ratio Station

Basic

Pulse Input

Complex Analog Output

Complex Discrete Output

Step Output PID

Device Control

Setpoint Ramp Generator

Splitter

Input Selector

Signal Characterizer

Lead Lag

Deadtime

Arithmetic

Calculate

Integrator(Totalizer)

Timer

Analog Alarm

Discrete Alarm

Analog Human Interface

Discrete Human Interface

Advanced


AI

PID

AI

PID AO CAS

IN

IN

SP

Product

Steam

TT100

TIC100

FT101

FIC101 FCV101

TIC100.OUT

Easy control strategy configuration


Communication Services and Deterministic Scheduling For Time Critical Control

TT100.OUT

TIC100.OUT

FT101.OUT

FIC101.OUT

FIC101.

BCKCAL_OUT

FCV101.

BCKCAL_OUT

TT100.OUT

TIC100.OUT

Cyclic Acyclic

TT

FCV

FT

macro-cycle macro-cycle

FIC101.

BCKCAL_OUT

FT101.OUT

FIC101.OUT

FCV101.

BCKCAL_OUT


Standard Measurement and Control Diagnostics Supported by Devices


Devices Provide Predictive Diagnostics

Provide Information On Life Expectancy and Performance

Degradation

Device Performance

Failure

Predictive Alarm


Predictive Maintenance Examples

Transmitter generates an alert when

the probe tip degenerates

the device has exceeded factory maximum field temperature usage

• Cycle Counter

• Valve Signature

• Dynamic Error Band

O2 Sensor creates alert when the sensor fouls


Classic I/O

H1

Other Buses

Other Buses

Event is Time Stamped At The Source!


Interoperability Allows...

Devices from different manufacturers are able to interact with each other without Host interaction

– Control in the field works seamlessly

– Devices do not conflict with each other

Host can read/write the resource and transducer block parameters

Device diagnostics may be accessed by the host


Test System

Device Description Test Cases

Device Interoperability Testing at the FOUNDATION

Test Function Block


Interoperability Is a Reality

Modern control systems support

Foundation Fieldbus devices from all

manufacturers


New Types of Fieldbus Devices May be Easily Added

Device Descriptions may be

added in accordance with the

FOUNDATION standards.


A Device Is Registered by the Fieldbus

FOUNDATION after it passes these tests:

FOUNDATION™ fieldbus Physical Layer

Conformance Test Specification (FF-830)

Interoperability Test of Standard Function

Blocks, Resource Block and System/network

Management Functions

Device Description (DD) Interoperability Test

All Files necessary (Capabilities File) for the

device definition are included and appropriate.

Registered Devices


Types of Fieldbus Devices That Have Been Registered

Mass Meter

Pressure Differential

Pressure Absolute

Valve Positioner

Valve Actuator

Rotary Valve Actuator

Radar Level

Mag Flow

Digital Valve Controller(on/off)

Digital Valve Controller

pH/ORP

pH

Temperature

Coriolis Mass Flow

Nuclear Level Gauge

Vortex Flow

2-wire In Situ O2

Conductivity

Conductivity/Resistivity

Continuous Gas Analyzer

Gas Chromatograph

Fieldbus to Current

Fieldbus to Pressure

Current to Fieldbus

Recorder

Fieldbus Controller

Discrete I/O


Edmonton, Canada

Syncrude - Canada

Control System

– DeltaV

– Honeywell Scan 3000/TPS

Fieldbus Devices

– Rosemount

– Fisher Controls

– Valtek

– Yokogawa

– Honeywell

– Smar

– E + H


Royal Dutch Shell - Amsterdam

Shell - Amsterdam

Control System

– DeltaV

– Yokogawa Centum

– Honeywell Scan 3000

– Smar

Fieldbus Devices

– Fuji

– Yokogawa

– Fisher Controls

– Rosemount

– Honeywell

– Smar


Test Reports

Foundation Fieldbus

Interoperability

Test Report

Shell Research Center

Amsterdam

Peter Eigenrann

Bindert Douma

Fieldbus brings dramatic savings in installation and commissioning, but the real value is seen during plant operation...


Over 120,000 Foundation Fieldbus devicesin more than 4,000 installations

Nu

mb

er o

f F

ield

bu

sP

roje

cts

0

1000

2000

3000

4000

Oct

-98

Jan-

99

Apr

-99

Jul-9

9

Oct

-99

Jan-

00

Apr

-00

Jul-0

0

Oct

-00

Jan-

01

Apr

-01

Jul-0

1

Source: Fieldbus Foundation


Driving Forces For Acceptance

Saving in installation and commissioning of field devices

Greater access to device information

Freedom of choice in device selection enabled by Foundation Interoperability


Cost savings for first 64 wells versus

competitors’ solution:

• Engineering 336 vs. 480 KUSD

• Commissioning 14 vs. 86 KUSD

• Wiring 206 vs. 596 KUSD

Audited Savings 556 vs. 1162 KUSD

Other Reductions:

• Terminations 84%

• I/O Cards 93%

• Panel Space 70%

• Transmitters 28%

• Maintenance 50 - 80%

Savings at ARCO Alaska


Fieldbus Installation and Commissioning

Category Conventional I/O Fieldbus Savings

Wiring 2 wires per device 16 devices per 2 wires 90%

Commissioning 2 - 4 hrs per device 5 min per device 96%

Space 75 loops per cabinet Eliminates 75% ofspace

75%

InstrumentEngineering

3 hrs per device 1 hr per device 67%


Before

Courtesy: Cargill Corporation


After

Courtesy: Cargill Corporation


256 I/O

BEFORE


4,000

Fieldbus ‘I/O’

AFTER


Over 50 Registered Fieldbus Devices are Available Today From 20 manufacturers

Fuji


Types of Fieldbus Devices That Have Been Registered

Mass Meter

Pressure Differential

Pressure Absolute

Valve Positioner

Valve Actuator

Rotary Valve Actuator

Radar Level

Mag Flow

Digital Valve Controller(on/off)

Digital Valve Controller

pH/ORP

pH

Temperature

Coriolis Mass Flow

Nuclear Level Gauge

Vortex Flow

2-wire In Situ O2

Conductivity

Conductivity/Resistivity

Continuous Gas Analyzer

Gas Chromatograph

Fieldbus to Current

Fieldbus to Pressure

Current to Fieldbus

Recorder

Fieldbus Controller

Discrete I/O

Note: See www.fieldbus.org for latest listing

Technology

Fieldbus Tutorial Part 1 - Fieldbus Overview