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DISTRIBUTED CONTROL SYSTEM (DCS)

OPERATOR STATION

(A) OPERATOR FUNCTIONS

MONITOR AND CONTROL PROCESS

MANIPULATE PROCESS PARAMETERS, CONTROLLER

MODES

MONITOR AND CHANGE SEQUENCE EXECUTION STATE

PROVIDE VARIOUS PROCESS TRENDS

ALARM MANAGEMENT AND MESSAGE HANDLING

SELECT REPORTS AND HISTORIES FOR VIEWING /

PRINTING

GENERATE PERIODIC LOGS AND JOURNALS

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DISTRIBUTED CONTROL SYSTEM (DCS)

OPERATOR STATION

(B) CURSOR CONTROL DEVICES FOR PLANT OPERATION TOUCH SCREEN

MOUSE

TRACKBALL

QWARTY KEYBOARD

MEMBRANE TYPE INDUSTRIAL KEYBOARD

SINGLE TOUCH CONFIGURABLE KEYBOARD

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DISTRIBUTED CONTROL SYSTEM (DCS)

OPERATOR STATION - DISPLAYS

PROCESS OPERATORS DISPLAYS : CONTINUOUS PROCESS OPERATING DISPLAYS

(GRAPHICS, GROUP, OVERVIEW, DETAIL ETC.)

TREND DISPLAYS, SEQUENCE DISPLAYS

REPORT DISPLAYS

PROCESS ENGINEERS DISPLAYS :

CONFIGURATION DISPLAYS

DATAPOINT BUILDING DISPLAYS

GRAPHIC GENERATION DISPLAYS

SYSTEM COMMANDS AND PROGRAMMING DISPLAYS

LOGS AND REPORT CREATION DISPLAYS

MAINTENANCE ENGINEERS DISPLAYS : SYSTEM STATUS AND PERFORMANCE DISPLAYS

FAULT DESCRIPTION AND MAINTENANCE

RECOMMENDATION DISPLAYS

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DISTRIBUTED CONTROL SYSTEM (DCS)

FEATURES OF OPERATOR DISPLAY

DYNAMIC DISPLAYS

DISPLAY UPDATE RATES

NO. OF COLOURS & RESOLUTION OF THE DISPLAY

NO. OF TAGS SUPPORTED PER DISPLAY

DISPLAY LINKS

GRAPHICS SCROLLING

TRENDING FUNCTION WITH HAIRLINE CURSOR

STANDARD SYMBOLS AVAILABLE FOR GRAPHICS.

TUNING PANEL WITH REAL TIME TRENDINGSINGLE TIER / TWO TIER DISPLAY

NO. OF CRT PER CONSOLE

NO. OF DUAL FUNCTION KEYS FOR SINGLE KEY STROKE ACCESS

MULTI LEVEL ACCESS SECURITY

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DISTRIBUTED CONTROL SYSTEM (DCS)

STANDARD LOGGING FUNCTIONS

ALARM HISTORY / SHIFT

EVENT LOG

HOURLY LOG / HOURLY AVERAGE LOG

SHIFT LOG /SHIFT AVERAGE LOG

DAILY LOG / DAILY AVERAGE LOG

WEEKLY LOG

SHUTDOWN LOG

TRIP INITIATED LOG

SPOT OPERATION LOG

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DISTRIBUTED CONTROL SYSTEM (DCS)

OVERVIEW DISPLAY

NORMALLY 128 TAGS ARE MONITORED

SIMULTANEOUSLY (PAGE)

INPUTS TO BE SHOWN AS VARIABLE LENGTHS ABOVE

OR BELOW THE SET VALUE.

CHANGE OF COLOR IF CROSSES SET VALUE

AUTO MANUAL STATUS TO BE SHOWN ON OVERVIEW

DISPLAY

ALARM CONDITION TO BE SHOWN AS FLASHING

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DISTRIBUTED CONTROL SYSTEM (DCS)

GROUP DISPLAY

NORMALLY 8 TAGS ARE MONITORED SIMULTANEOUSLY

PROCESS VALUE, SET VALUE & CONTROLLER OUTPUT

VALUE TO BE SHOWN AS VARIABLE LENGTHS ABOVE OR

BELOW THE SET VALUE.

ENGG. UNITS, CONTROLLER MODE, LOOP DESCRIPTION,

ALARM CONDITION ETC TO BE DISPLAYED FOR EACH LOOP

TOTAL CONTROL OF THE LOOP DISPLAYED FROM THE

GROUP DISPLAY TO BE MADE AVAILABLE

POSSIBLE TO REPEAT ONE TAG IN MORE THAN ONE GROUP

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DISTRIBUTED CONTROL SYSTEM (DCS)

LOOP DISPLAY

ONE FOR EACH LOOP

DISPLAYS CONTROLLER TUNING CONSTANTS, ZERO & SPAN

VALUES, ALARM SET POINTS, LIMITS ON SET POINT, PV RAW

VALUES, ENGINEERING UNITS, ALARM ENABLE/DISABLEINFORMATION ETC.

ALL THE CHANGES IN ABOVE PARAMETERS IS POSSIBLE, IF

AUTHORISED, FROM LOOP DISPLAY

LOOP DISPLAY ALSO DISPLAYS REAL TIME TREND FOR SET

POINT, PROCESS VARIABLE & OUTPUT WITH SAMPLING

INTERVAL OF 1 SEC FOR NORMALLY 30 MINUTES.

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DISTRIBUTED CONTROL SYSTEM (DCS)

OTHER DISPLAYS

GRAPHIC DISPLAY

TREND DISPLAY

ALARM MONITORING & DISPLAY

ALARM MANAGEMENT - DATE 7 TIME OF OCCURRENCE,

ACKNOWLEDGED/ NOT ACKNOWLEDGED STATUS ETC

ALARM HISTORY

SYSTEM ALARM

MULTI WINDOW DISPLAY

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DISTRIBUTED CONTROL SYSTEM (DCS)DCS OPERATION

CONTROLLER ALGORITHMS

PID

PID WITH RATIO AND BIAS

HIGH/LOW OVERRIDE SELECTOR

AUTO/MANUAL STATION

MULTIPLIER/DIVIDER

SQUARE ROOT EXTRACTOR

SWITCH

CALCULATOR

RAMP/SOAK GENERATOR AX

FC

PC

LCTI

FI

LC

QC

TI

AC

dPC

TC

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DISTRIBUTED CONTROL SYSTEM (DCS)

DCS OPERATION

ALGORITHMS

ARITHMETIC FUNCTIONS LIKE ADDITION, SUBTRACTION,

AVERAGE, SUMMATION ETC.

LINEARISATION BLOCKS LIKE SQUARE ROOT EXTRACTION,

PRESSURE & TEMPERATURE COMPENSATION,

THERMOCOUPLE LINEARISATION, POLYNOMIAL

LIMITER & COMPARATORS

DYNAMIC FUNCTIONS LIKE LEAD-LAG, DEAD TIME, TIMER,

TOTALISER ETC.

LOGICAL FUNCTION BLOCKS LIKE AND, OR, NOT, XOR, FLIP-FLOP ETC.

SEQUENTIAL CONTROL

USER WRITTEN PROGRAMMES IN HIGH LEVEL LANGUAGE.

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DISTRIBUTED CONTROL SYSTEM (DCS)

DCS OPERATION

PERFORM REGULATORY CONTROL

PERFORM DATA ACQUISITION

PERFORM REAL TIME TRENDING OF PROCESS

VARIABLES

PERFORM HISTORICAL TRENDING OF PROCESS

VARIABLES

PRINT SCHEDULED AND EVENT DRIVEN REPORTS

PRINT AND LOG SYSTEM AND PROCESS ALARMS

PERFORM SYSTEM MAINTENANCE FUNCTIONS

Real-time

Information

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DISTRIBUTED CONTROL SYSTEM (DCS)

DCS OPERATION

PROCESS CONTROLLER FUNCTIONS

FUNCTIONAL DESCRIPTION

INPUT / OUTPUT MONITORING

MODULATING CONTROL

LOGIC CONTROL

SEQUENCE CONTROL (THROUGH PROGRAMMING)

Continuous Sequential Logic

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DISTRIBUTED CONTROL SYSTEM (DCS)