WEL - COME TO

DISTRIBUTED CONTROL SYSTEM

(DCS)

What is DCS ?

DCS is abbreviation for Distributed Control System As is apparent from the abbreviation, the word ‘Distributed’ supports

following functionality’s Physical Distribution - Nodes or Subsystems can be Distributed I.e

located physically apart Functional Distribution - Specific Functionality is imparted for a

Node basing on the combination of hardware and software used. For e.g Application work-processor with Historian, Application work-processor with control configuration software

Structural Distribution - Different Structural hardware platforms (Application Workstation processor, Workstation processor, Control processor etc.) are used to achieve the required functionality.

WHY DCS ?

For Total Plant Automation

For Higher Productivity

For Optimal Process Control

For Regulatory Compliance

For Management Information System

In Tune With Global Requirement

DCS MANUFACTURERS

HONEYWELL YOKOGOWA ALLEN BRADLEY GE FANUC EMERSON ASEA BROWN BOWERI – ABB FOXBORO - INVENSYS

What DCS we are using?

Emerson Delta V system

Overview of Delta V system

Engineering station

Operator station

Application station

Controller and IO Controller and IO

Professional PLUS (Engineering) Workstation

Every DeltaV system must have one, and only one,

Professional PLUS Station. It provides the global

configuration and the configuration database for the

system. Therefore, it is the primary engineering and

configuration interface for a DeltaV System. For small

DeltaV systems, it also serves as the operator and diagnostics

interface for the system.

PROPLUS STATION

Application (PI Historian) Workstation

This Application Station provides integration between your DeltaV system and the

rest of your day-to-day operations, using OLE for

Process Control (OPC). Optionally, you can extend

your DeltaV system with DeltaV applications and other

third-party applications tailored for your particular

process. It is also act as a PI Historian server.

APPLICATION STATION

Delta V controller

The CONTROLLER manages all control activities for the I/O interface

channels. It also manages all communication functions for the communications network. Time

tamping, alarming, and trend objects are also managed within the controller.

The controller executes your control strategy. Information from an input

channel is received, control strategy applied, and data sent to an output

channel within 100 ms. The DeltaV I/O subsystem is

comprised of the following components:

Carriers Power Supplies Controller I/O Modules

Operator workstation

For workstations that are required for operating the

process and viewing continuous history only,

select the Operator Station Software Suite.

Applications typically added to the Operator

Station Software Suite are the Event Chronicle,

Diagnostics, and Control Studio On-Line.

OPERATOR STATION

Typical Schematic Diagram For Information Flow

JB TB IO CARD CONTROLLER

OS

JB TB

From TX

CONTROL ROOMFIELD

To I/PIO CARD CONTROLLER

OPERATOR WORK STATION

FUNCTIONS AND FEATURES

OPERATOR STATION OVERVIEW

OPERATOR STATION BUTTONS1

Buttons

Acknowledge Alarm - This button is displayed in the Alarm Banner. It also appears in the faceplate

and detail displays for the standard modules. If you select this icon in the Alarm Banner, the system

acknowledges all the unacknowledged alarms in the main process graphic. Only those alarm parameters

that are part of the graphic are acknowledged.

Silence Horn - This button stops the horn. If new alarms become active, the horn sounds again.

OPERATOR STATION BUTTON2

ButtonsAlarm Suppress - This button is displayed in the Alarm

List picture and the Alarm Filter picture. Clicking the Alarm Suppress button opens the Operator Suppressed

Alarm picture, which lists all of the suppressed alarms.

Diagnostics - This button is displayed in the Alarm banner. It shows your Communications status. The Diagnostics

button displays two indicators for the Primary Communications network and four indicators for the

Secondary Communications network. Clicking the Diagnostics button launches diagnostics, which provides

more detailed information.

OPERATOR STATION BUTTONS3

ButtonsDisable Horn/Enable Horn - When disabled, new alarms do not cause the horn to sound. This setting is a parameter of the current user's session. When a new user logs on, the

horn is enabled.

Node Status - This button is displayed in the Alarm banner. This button is not displayed if Batch Operator Interface is

running. Clicking the Node Status button launches the Node Status picture, which provides information on your node

(for example, current status and time of last status change or download as well as whether or not its alarms have been

acknowledged).

OPERATOR STATION BUTTONS4

Buttons

ANALOG INPUT DYNOMOS

Analog Input

PID CONTROLLER DYNAMOS

PID Controller

CONTROL VALVE DYNAMOS

Dynamos

Control Valve

ON/OFF VALVES DYNAMOSON/OFF Valve

PUMP / MOTOR DYNAMOS

SELECTOR DYNAMOS

Selector

Selection IndicatorInput 1

Output

Display Tag

Input 2

Input 1 Selected

Input 2 Selected

LEVEL BAR DYNAMOS

GOOD CONDITION0% level empty bar0.01% to 100% - Bright green filling

Warning ALARMYellow Flashing bar if not acknowledgeSteady yellow bar if acknowledged

Critical ALARMRed Flashing bar if not acknowledgeSteady red bar if acknowledged

ANALOG INPUT FACEPLATE

Close faceplate

PV Bar

PV

Push pin

Module nameDescription

Alarm indications

Toolbar

ANALOG INPUT DETAILS FACEPLATE

Module name

Alarm limits

Simulate enable/disable

Transmitter scales

PV filter time constant

Input linearization type

Description

Alarm enable

Alarm suppress

Module diagnostics

FACEPLATE BUTTONS DETAILS

PID CONTROLLER FACEPLATE

PID DETAIL FACEPLATE

ON/OFF VALVE FACEPLATE

OPERATOR STATION OVERVIEWFaceplate

Detailed ON/OFF Valve

OPERATOR STATION OVERVIEWFaceplate

Motor/Pump

OPERATOR STATION OVERVIEWFaceplate

Motor/Pump

THANK U ALL

FROM ,

Jayapal A P

FEED GAS COMPRESSOR

REFORMER FIRING CONTROL

STEAM SYSTEM

SATURATOR /DESATURATOR

SYNGAS MACHINE

CONVERTER

LIGHT END COLUMN

HEAVY END COLUMN

ALARM LIST PAGE

SUPPRESS ALARM PAGE

AREAM ALARM LIST PAGE

PROCESS HISTORY VIEW

DELTA V EXPLORER

CONTROL MODULE

DIAGNOSTIC PAGE