yokogawa dcs training

Yokogawa Electric Corporation

2-9-32 Nakacho, Musashino-shiTokyo, 180-8750JAPAN

Yokogawa Electric CorporationCopyright by Yokogawa Electric Corporation

Distributed Control System

TRAINING CENTRE

YOKOGAWA INDIA LIMITED

YOKOGAWA

TRAINING CENTRE

Proprietary info goes here Yokogawa Electric CorporationCopyright by Yokogawa Electric Corporation

Basic Loop

Controller

I/P

Transmitter

I/P Convertor

PV MVSV

4-20 mA

4-20 mA

Pneumatic Signal(0.2 to 1 Kg/cm2 or 3 to 15 psi)

Final Control Element

Basic Control Loop


Process Control Systems

Process control systems are classified into

Analog Control Systems

Digital Control Systems


Analog Control System

Signal Conversion

I/P4-20 mA DC

1 to 5V DC

Operational Amplifier

Set Point

Final Control Element

Transmitter

Analog Control System


Digital Control System

I/P4-20 mA DC

A / D

1 to 5V DC

D / A

DigitalOutput

Unit

Input Unit

Memory Unit

ControlUnit

ArithmeticUnit

Set Point

Processor




Digital Control Systems are further classified into

Centralized Control Systems

Distributed Control Systems


Centralized Processing

UnitCPU

Centralized Control System

Input Signals from Field

Set Points

OutputSignals to Field

Centralized Control , Centralized Monitoring

PV1

PV2

PVn

PV3

MV1

MV2

MVn

MV3

SV1 SV2 SV3 SVn




Drawbacks Of CCS:

If the CPU fails the entire plant gets affected.

Redundancy concept was not available.

Redundancy is having two controllers. One would be active and the other would be standby. If the active controller fails, the standby controller takes over.



Input Signals from Field

Distributed Control Centralized Monitoring

Set Points

Communication Bus

Output Signals to Field

MV1

MV8FCS

PV1

PV8SV1 SV

8 MV9

MV16FCS

PV9

PV16

SV9 SV16

MV17

MVnFCS

PV17

PVn

SV17 SVn

OPS

OPS



Basic Components of DCS

FCS (Field Control Station):Used to control the process. All the instruments and interlocks created by software reside in the memory of the FCS. All the field instruments like transmitters and control valves are wired to the FCS.

OPS (Operator Station):Used to monitor the process and to operate various instruments.

Communication Bus:Used to communicate between the FCS and the OPS


Advantages of DCS

9 Control function is distributed among multiple CPUs (Field Control Stations). Hence failure of one FCS does not affect the entire plant.

9 Redundancy is available at various levels.

9 Instruments and interlocks are created by software.

9 Generation and modifications of the interlocks are very flexibleand simple.

9 Information regarding the process is presented to the user in various formats.

9 Field wiring is considerably less.

9 Maintenance and trouble shooting becomes very easy.

9 Cost effective in the long run.


DCS Evolution

CENTUM was released in 1975 as the world-first DCS (Distributed Control System), and has been progressed.CENTUM CS 3000 is the latest Yokogawa DCS.

From 98 (1458 Systems)

CENTUM/CENTUM V

CENTUM-XL

CENTUM CSFrom 93 (2113 Systems)

From 88 to 00 (1703 Systems)

From 75 to 93 (1983 Systems) As of March 03


CS3000 - System Configuration

CS, CS 1000CENTUM-XL, -V

MXL

BCV

CGW

Remote Domain System

V net

HIS

ooo

PFCS

LFCS

Ethernet

HIS / ENG

FFCSKFCS


CENTUM CS 3000 - Major Components

FCS (Field Control Station) Reliable controller. Cost-effective and capable I/O subsystem.

HIS (Human Interface Station) The operator station based on Windows XP or Windows2000. (Both

are selectable.) HIS provides easy & flexible operation.

ENG (Engineering Station) Engineering Station is used to do the engineering builder for all the

stations like HIS, FCS, CGW, BCV etc. ENG is a PC loaded with Engineering software.

The HIS can be loaded with engineering software so that it can be used as HIS as well as ENG.

CGW: Communication Gateway Unit used to communicate with supervisory computers.

BCV: Bus Converter is used to link two domains.


CENTUM CS 3000 - Networks

V-Net (Communication Bus) Real-time control bus. V-NET is a used for communication between HIS, FCS,

BCV & CGW. Maximum 64 Stations can be connected on the V-net.

ETHERNET (Communication Bus) Ethernet is a standard network in CS3000 to connect HIS,

ENG and supervisory computers . Transmission speed: 10 MBPS


FFCS Hardware View

Power supply unit

CP401 CPU module

Eight FIO slotsEight FIO slots

EC401 ESB bus coupler(Note)

Note: Two I/O slots are to be used for NIU extension.

AIP504 Vnet coupler (10BASE2 Vnet cable is used.)

Detachable bottom unit


Hardware Configuration- Local Node

FIO: Max. 8

Local node Max. 3

ESB busESB busUp to 6 Modules

Up to 8Modules

C

P

4

0

1

C

P

4

0

1

P

W

4

8

X

P

W

4

8

X

V netV net

FFCSFFCS

C

P

4

0

1

C

P

4

0

1

P

W

4

8

X

P

W

4

8

X

E

C

4

0

1

E

C

4

0

1

S

B

4

0

1

P

W

4

8

X

P

W

4

8

X

S

B

4

0

1

S

B

4

0

1

P

W

4

8

X

P

W

4

8

X

S

B

4

0

1

S

B

4

0

1

P

W

4

8

X

P

W

4

8

X

S

B

4

0

1

FFCSFFCS

Minimum ConfigurationMinimum Configuration

Maximum ConfigurationMaximum Configuration


Hardware Configuration Remote Node

V netV net

FFCSFFCS

Remote nodeRemote node

Expanded Remote node up to 3

ER busER bus

E

B

4

0

1

E

B

4

0

1

E

B

4

0

1

E

B

4

0

1

E

B

4

0

1

E

B

4

0

1

E

B

4

0

1

C

P

4

0

1

C

P

4

0

1

P

W

4

8

X

P

W

4

8

X

E

B

5

0

1

P

W

4

8

X

P

W

4

8

X

E

B

5

0

1


E

B

5

0

1

P

W

4

8

X

P

W

4

8

X

E

B

5

0

1

E

B

5

0

1

P

W

4

8

X

P

W

4

8

X

E

B

5

0

1


Optical Repeater can be usedOptical Repeater can be used


The Station for Real time Plant Monitoring/Operation

Easy Operation by a mouse, a keyboard etc.

Real time display of Plant Abnormalities.

HIS (Human Interface Station)

Plant Operation by thousands of Graphics


Types of HIS

DESKTOP HIS:A IBM PC/AT compatible machine is generally used. Apart from the general PC, the Yokogawa PC is also supported. Specifications of the PC HIS Desktop are as follows:CPU : Pentium IV ProcessorMain Memory : 256 MB (Minimum)Hard Disk : 20 GB or moreVideo Display : 1024 x 768 or more, 256 coloursCRT Monitor : Multi Scan 17 monitor or largerSerial Port : RS232C one port or moreParallel Port : One port or moreExtension Slot : PCI slot for V/VL net card, ISA slot for Ethernet cardPower Supply : 200-240V ACBasic Software : Windows NT with Service Pack ,Windows 2000 or

Windows XP

CONSOLE HISThe floor mounted console type HIS comes with 21 monitor which has a touch panel operation. It has an operation keyboard and an engineering keyboard.


Application Capacity of HIS

Maximum number of tags that can be monitored from HIS : 1000000

Maximum number of windows that can be created per HIS : 4000

Maximum number of Trend Recording Points per HIS : 2304


V net Communication

Protocol : IEEE 802.4Access Control : Token PassingTrans. Speed : 10 MbpsTrans. Distance : 500m to 20kmMedia : Coaxial/Optical FibreStd. max. length : 185 mMax. length : 20 Km (with optical repeater) 1.6 Km (with coax. repeater)

V net

HISHIS


V net : Extension Details

HIS HISHIS

OpticalFibre

R

R R

RT

T

OpticalFibre

R

R R

R T

T

Max. 500m Max. 500mMax. 500mMax.15 km

Max.15 km

Overall Max. 20 km

Co-axial CableV net


Domains are group of stations connected on the V-net. Bus Convertor is used to link two domains. BCV is used to connect CS, CS 1000, CENTUM-XL,CENTUM-V AND MXL to CS3000system

Bus Convertor

HF BUS

EFCD FCS

HIS

ooo

BCV

ooo ooo

Domain connection

EOPS

V-NET

ETHERNET


Operation Windows

Information regarding the process is gathered as well as monitored by the following Standard Operation windows on the HIS.

Tuning Window Control Group Window Trend Window Process Alarm Window Operator guide Message Window Graphic Window Overview Window Process Report Window Historical Report Window


System Message Window

These buttons are provided for calling various functional windows on the HIS

Type the TAGNAME to call the instrument faceplate window


Various windows can be accessed by selecting

the respective icons in theSystem Message Area

These windows can also be accessed by the keys on the Operator Keyboard

SYSTEM MESSAGE AREA ICONS

System Message Area


Operation Keyboard

Operation KeyboardOPERATION KEYBOARD

All the operations can be performed with the help of the Operation Keyboard. The same

operations can also be performed by touch functions available

on the System Message Area Icons.


From this window, you can open the following windows.

1. Overview Window 2. Control Window 3. Tuning Window 4. Trend Window 5. Graphic Window 6. Alerm Window7. Operator Guide message

Window

Operation Windows


Instrument Faceplate Window


Tuning Window

Select this icon to display the Tool box

Select this icon to display the Tuning Window


Tuning Window

TUNING WINDOW displays all the Tuning parameters of the instrument.

The Tuning Window is used to set up the alarm setting as well as the loop tuning parameters.

Only the items indicated with a = canbe changed.

Displaying a Tuning Window1.Double click on a Tags name on a Control Window and a faceplate windowwill appear. Select the Tuning window icon from the toll box.

2. Select NAME icon in the System Message Area then enter the TAGNAME.


Tuning Window


Mode Status

MAN (Manual)

AUT (Auto)

CAS (Cascade)

PRD (Primary Direct)


Manual Mode

MANUAL MODE:In manual mode, the MV pointer appears in red colour and the SV pointer appears in yellow colour. MV of the i n s t r u m e n t c a n b e c h a n g e d b y increment/decrement keys or through d a t a e n t r y b o x . T h e S V o f t h e instrument can be changed either by set point change key or using ITEM and D A T A i n t h e d a t a e n t r y b o x .


Auto Mode

AUTO MODE:In auto mode, the SV pointer appears in red colour and the MV pointer appears in yellow colour. SV of the instrument c a n b e c h a n g e d b y increment/decrement keys or through d a t a e n t r y b o x . T h e M V o f t h e instrument cannot be changed by anymethod.


Cascade Mode

CASCADE MODE:In a cascade loop the output of the primary controller (MV1) goes as set point of the secondary controller (SV2). The output of the secondary controller (MV2) goes to the final control element. For a cascade loop, the primary controller can be in AUT or MAN mode, but the secondary controller has to be in CAS mode. In cascade mode both the SV and MV pointers appear in yellow colour.

The SV and MV of the instrument cannot be changed.


Primary Direct Mode

PRD: PRIMARY DIRECT MODEIn a normal cascade loop the output of the primary controller (MV1) goes as set point of the secondary controller (SV2). The output of the secondary controller (MV2) goes to the final control element.

In PRD mode the output of the primary controller (MV1) directly goes to the final control element. The secondary controller is bypassed and cannot be operated.


Selecting/Deselecting PRD Mode

To select PRD mode:Go to the tuning window of the Secondary controller.Select PRD Icon. Confirm.

To select CASCADE mode:Change the mode status of the secondary controller to CAS.


Mode Sub Status

IMAN (INITIALIZATION MANUAL MODE)In a cascade loop, if the cascade is broken by tak ing the secondary controller from CAS to either AUT or MAN mode, IMAN appears as the mode sub status of the primary controller. IMAN indicates that Cascade loop is broken Primary controller is bypassed Primary controller cannot be operated due

to SV tracking.


SV Tracking

SV tracking:The output of the primary controller (MV1) automatically tracks the set point of the secondary controller (SV2) to have bumpless transfer to CAS mode.To bring the primary controller out of IMAN modeChange the mode s tatus o f the secondary controller to CAS. The primary controller will automatically c o m e o u t o f I M A Nmode.


Clamped Positive

CLP+ (CLAMPED POSITIVE)In auto mode, if MV of the instrument is increased beyond MH value, MV gets clamped at the MH value and C appears on the instrument faceplate .

MHI alarm also appears on the instrument as well as in the Process Alarm Window.


Clamped Negative

CLP- (CLAMPED NEGATIVE)In auto mode, if MV of the instrument is decreased below ML value, MV gets clamped at the ML value and C appears on the instrument faceplate.

MLO alarm also appears on the instrument as well as in the Process Alarm Window.


Process Alarm Status

----------REDREDLLPV < LLPV VERY LOW

LL

----------REDREDPLPV < PLPV LOWLO

REDREDOUTPUT LINE IS OPEN

OUTPUT OPEN

OOP

RAW IS ACTUAL INPUT INTERMS OF %

REDREDCHECK RAW VALUE IN TUNING WINDOW

INPUT IS OUT OF RANGE

INPUT OPEN

IOP + / -

YELLOWYELLOWVLVELOCITY LIMIT

VEL = PV/ TVELOCITY ALARM

VEL + / -

YELLOWYELLOWDL DEVIATION LIMIT

DV > DL DV = PV - SV

DEVIATION ALARM

DV+ / -

----------REDREDPHPV > PHPV HIGHHI

----------REDREDHHPV > HHPV VERY HIGH

HH

----------GREEN GREEN--------------------PROCESS NORMAL

NR

REMARKSTAG MARK COLOUR

PV BAR COLOUR

ITEM TO BE SET IN THE TUNING

PANEL

ALARM

SETTINGS

PROCESS STATUS

ALARM STATUS


Process Alarm Status

OCCURS ONLY IN CAS/ AUTO MODE

YELLOWYELLOWMLMV < MLMV LOWMLO

OCCURS ONLY IN CAS/ AUTO MODE

YELLOWYELLOWMHMV > MHMV HIGHMHI

REMARKSTAG MARK COLOUR

PV BAR COLOUR

ITEM TO BE SET IN THE TUNING

PANEL

ALARM

SETTINGS

PROCESS STATUS

ALARM STATUS


Alarm Sub Status

AOF (Alarm Output Off)

CAL (Calibration)


Alarm Sub Status

AOF (Alarm Output Off)Normally when an alarm occurs

The tag mark changes colour depending on the typeof the alarm.

Audible alarm is heard.

The alarm status (HI/LO/HH/LL etc) is displayedon the process alarm window.


Alarm Sub Status

AOF (Alarm Output Off)

In AOF mode:

The tag mark changes to dark blue colour irrespectiveof the alarm.

Audible alarm is put off.

The alarm status is displayed only on the instrument faceplate.

All the alarms status except IOP & OOP on the Instrument are not displayed on the process alarm window.


Selecting / Deselecting AOF

To put the instrument to AOF mode:Go to the tuning window of the instrument.Select AOF icon. Confirm.

To bring the instrument back to normal mode:Go to the tuning window of the instrument.Select AOF icon once again. Confirm.


Alarm Sub Status

CAL (Calibration)When an instrument is put in CAL mode

CAL appears on the instrument faceplate.

The PV bar changes to cyan colour.

The Instrument automatically comes to MAN mode.

The actual transmitter input is bypassed.

PV of the instrument can be changed.

All the alarms checking on the instrument arebypassed.


Selecting / Deselecting CAL

To put an instrument in to CAL mode:Go to the tuning window of the instrument.Select CAL icon. Confirm.

To bring the instrument back to normal mode:Go to the tuning window of the instrument.Select CAL icon once again. Confirm.


Importance Level

Importance level is assigned to an instrument when it is created in the engineering builder. There are 8 importance levels.1 Important tag with confirmation 5 Important tag without confirmation 2 - General tag without confirmation 6 - General tag with confirmation3 - Auxillary tag I without Confirmation 7 - Auxillary tag I with Confirmation4 - Auxillary tag II without Confirmation 8 - Auxillary tag II with Confirmation


Security Level

Security level is assigned to an instrument when it is created in the engineering builder. There are 8 security levels.

Tuning Parameters are displayed with = or : depending on the security level. Parameters displayed with = can be changed in the current key position.Parameters displayed with : cannot be changed in the current key position.


Security Level

*1 : Only the PV alarm settings, SV, MV and block mode can be changed

* 2 : Only the SV, MV and block mode can be changed

O : Can be executed X : Cannot be executed

XXXXXX8

XXXOXX7

OXXOOX6

XXXOOO5

OOXOOO4

OO*2OOO3

OO*1OOO2

OOOOOO1

ENGONOFFENGONOFF

OPERATIONS

PROCESS DATA INPUT

FACEPLATE OPERATIONS,FACEPLATE DISPLAYACCESS LEVEL

OPERATIONMONITORINGKEY POSITION/


Control Drawing Display

Select this icon to call the Control Drawing display

Control drawing display


Control Group Window


Select this icon to display the Control Group Window


Control Group Window 8 Instruments

Control group windows are used to display multiple instrument faceplates.

Maximum 8 or 16 instrument faceplatescan be displayed in one Control Group Window

Normally the instruments are monitored and operated from this window.

Double click on the instrument TAGNAME to display the Tuning Window of the instrument. Select the Upper Window Key to come back toControl Group Window

.


Control Group Window 16 Instruments


Trend Window


Select this icon to display the Trend Window


Trend Window

TREND WINDOW records the PV, SV and MV of various instruments.

Trend can be displayed in Trend GroupFormat or in Trend Point Format.

Maximum 8 pens can be assigned in one Trend Group Window


Trend Group Window


Trend Point Window

Double click here to call the Trend Point Window

Trend Point Window


Calling Instrument from Trend Window

Double click here to call the Instrument faceplate Window

Instrument Faceplate Window. Instrument can be operated from this window.


Process Alarm Window

PROCESS ALARM WINDOW displays the latest 200 process alarms.

Alarms can be acknowledged either as a Group or as Individual alarm.

Select this icon to call the Process Alarm Window


Process Alarm Window

PROCESS ALARM WINDOW displays the latest 200 process alarms.


This icon displays the current PV Values of the instruments that are in alarm

This icon displays the important tags (High Priority Alarms) that are in alarm.

This icon is used to acknowledge the process alarms.


Operator Guide Message Window

Select this icon to call the Operator Guide Message Window

OPERATOR GUIDE MESSAGE WINDOWdisplays the predefined messages to guide the operator regarding the current processstatus and /or the actions to be taken.

OG messages can be acknowledged either as a Group or as Individual message.


Graphic Window


Overview Window


Select this icon to display the Overview Window


Overview Window

Overview Window displays the overview of the current process status.

Information regarding the process is distributed among the various display blocks.

32 Display Block s per Overview Window.

Each block gives dynamic information regarding the process.

Double click on the display block to more details.

3 Types of Display Blocks

Single Tag BlockWindow Display BlockComment Block


Overview Window


Process Report Window


Historical Message Report Window


Sequence Tables


Logic Charts


System Status Window


System Alarm Window

SYSTEM ALARM WINDOW displays the latest 100 system alarms.



Navigator Window


System Code : %ZnnusccSddss

%Z - Process Input/Output S - Station

nn - node number dd - Domain number

u - I/O unit number ss - Station number

s - Slot number

cc - Channel number

Digital Inputs are contact inputs from field to CS3000.

Digital Inputs are used to indicate the

i) ON / OFF status of pumps, motors, heaters, etc.

ii) OPEN / CLOSE status of on-off valves. Digital Inputs are used only as a condition signal in the Sequence Table. They cannot be used as an action signal in Sequence Table.

Digital Inputs


Digital Inputs Syntax

YTAGNO.PV.ON DI = OFFPV = 0

PV=1DI=ON

N

VALVE

PV=1DI=1

PV = 0DI = 0

OPEN

CLOSE

Contact is closed in field

Contact is open in field

Conditions


System Code : %ZnnusccSddss

%Z - Process Input/Output S - Station

nn - node number dd - Domain number

u - I/O unit number ss - Station number

s - Slot number

cc - Channel number

Digital Outputs are contact outputs from CS3000 to field.Digital Outputs are used to i) Switch ON / OFF pumps, motors, heaters etcii) OPEN / CLOSE on-off Valves.

Digital Outputs can be used as condition signals or as action signals in sequence table. If Digital Output is specified as Latched i.e. H, it has to be made ON on a particular condition and has to be made OFF on another condition

Digital Outputs


Output relay is energised

PV=1DO=1

PUMP

PV=0DO=0

Output relay is deenergised OFF

ON

Y

Y

Y

TAGNO.PV.ON

CO1

ON

N

PV = 1

TAGNO.PV.LTAGNO.PV.HTAGNO.PV.P

YYY

N

Condition

Action

N

Y

Y

PV = 0 OFF

OFF PV=0 ON PV=1

Digital Outputs Syntax


Whenever Digital Outputs, Switches and Annunciators are used in sequence table as an action signal, they have to be specified as L (or) H

Input

OutputUnlatched (L)(level triggered)

Output Latched (H)(edge triggered)

Output pulse (P) The O/P is turned ON only once, for approx..1sec. When condition is true. If the condition goes false and then true again,output is turned ON again for a second.

R-1Stop

Start

Start

Stop

R - 1 - 1 (Latching or hold on contact)

Latch & Unlatch


Switches are classified into Global switches and Common Switches.

Global Switches are common to all FCS. The status of global switches

are transmitted to other FCS through link transmission. Hence they can

be set and referred in any FCS.

Common Switches are used to within the FCS. They are specific to each

FCS.

Switches


Max.256 GS/FCS

System Code: %GSxxxxSddss%GSxxxx - Switch number (0001 - 0256)dd - Domain numberss - Station number

Global Switches


Max.4000 SW/FCS

System Code: %SWxxxxSddss%SWxxxx - Switch number (0001 - 4000)dd - Domain numberss - Station number

Switches are used to store intermediate variables in the interlocks. Switches are internal flags that can be set and reset whenever required.

Switches are used for auto / man selection, pump selection, speed selection, bypass selection etc..

Switches No. 1 - 200 are used by the system. Hence the user can use switches from 201 - 4000.

Common Switches


Y

Y

Y

Y

Y

N - PV=0, SW=OFFPV=1, SW=0N

N

N- PV=0PV=1

TAGNO.PV.ON

TAGNO.PV. L

TAGNO.PV.H

TAGNO.PV.P

BYPASS

NORMAL

PV=1, SW=ON

PV=0, SW=OFF

Condition

Action

CO1

Switches Syntax

BYPASSSW


Timers are used to introduce time delays in Sequence Table.

Second timer

Timer Types

Minute timerMax time - 9999 secs (or) 9999 Mins.

PH = Maximum time the timer should count

PV = Actual time the timer has counted

DV = PH-PV i.e.the time left to finish counting

DL = Deviation limit

Timer

90

Yokogawa Electric CorporationCopyright by Yokogawa Electric Corporation

1. When the timer is started, PV starts incrementing automatically Alarm status is NR2. When the timer has finished timing, i.e. when PV = PH

Alarm status is CTUP3. When the timer is stopped while timing Alarm status is STOP4. When the timer is paused while timing Status is PAUS5. When the DV < DL alarm status is PALMAny of the alarm status can be referred in sequence table as a condition signal.

Timer Operation


Used to count internal events or external pulses. Counter PV updates by one every time the counter is started

INT - Internal counter

Counter types

P - Pulse counter

Max.9999 Counts

Counter operation is same as timer except that pause option is not available.

Counter


Operator Guide Messages are used to guide the operator regarding the current process status and/or the actions to be taken. Operator Guide messages are also activated through sequence table on a specific condition. Operator Guide messages appear on operator guide message panel.

System Code: %OGXXXX

CO1

%OGXXXX.PV.NON

Action

Y

Y

Condition

Operator Guide Messages


Annunciator messages are user defined alarms. Annunciator messages are also activated through sequence table on a specific condition. Annunciator messages appear on Alarm Summary Panel.

System Code: %ANxxxxSddssaa

CO1

C02

%ANXXXX.PV.L

%ANXXXX.PV.H

Action

Y

Y

Y

N

N

Condition

Message


Sequence instruments (or) status input output instruments are used to

i) Switch ON/OFF motors, pumps, heater etc..

ii) OPEN / CLOSE on-off valves

iii) Indicate the ON/OFF status of motors, pumps, heaters etc.

iv) Indicate the OPEN/CLOSE status of on-off valves.

Sequence Instruments


One DO is linked with the instrument.

OPEN MV = 2DO = ON

CLOSE MV = 0DO = OFF

OUT

Loop Connection

Tag No.

SO - 1

DOTAGNO.PV

Wiring

SI0 Model

(OR) %ZnnusccPIO

C01

C02

Y

Y

TAGNO.CSV.2

TAGNO.CSV.0

Action Y

Y

Condition

Model SO-1


Two DOs are linked with the instrument.

OPEN MV = 2DO1 = ON

CLOSE MV = 0DO2 = ON

OUT

Loop Connection

Tag No.

SO - 2

DOTAGNO.PV

Wiring

SI0 Model

(OR) %ZnnusccPIO

C01 Y

TAGNO.CSV.0

TAGNO.CSV.1

TAGNO.CSV.2

MV = 1DO1 = OFFD02 = OFF

Y

Y

Y

This DO number and the next consecutive DO number will be taken as the 2 output signals automatically.

Action

Condition

Model SO-2


One DI is linked to the instrument.

OPEN PV = 2DI = ON

CLOSE PV = 0DI = OFF

IN

Tag No.

SI - 1

DITAGNO.PV

TAGNO.PV.2

TAGNO.PV.0

Condition

Y

Y

Action

Model SI-1

PIO

(OR) %Znnuscc


Two DIs are linked to the instrument.

OPEN PV = 2DI1 = ON

CLOSE PV = 0DI2 = ON

IN

Tag No.

SI - 2

DITAGNO.PV PIO

TAGNO.PV.0

TAGNO.PV.1

TAGNO.PV.2

PV = 1DI1 = OFFDI2 = OFF

Y

This DI number and the next DI number

will be taken as the 2 answerback inputs.

Y

Y

Condition

ActionTRAVERSE

Model SI-2

(OR) %Znnuscc


1 DI and 1 DO is linked to the instrument.

OUT

Tag No.

SI0 - 11

DOTAGNO.PV

TAGNO.PV.0TAGNO.PV.2

TAGNO.ALRM.ANS+ TAGNO.ALRM.ANS-

Answerback Signal

START

PV = 2DI = ON

MV = 2DO = ON

Output Signal

STOP

PV = 0DI = OFF

MV = 0DO = OFF DITAGNO.PV

INY YY Y

TAGNO.MODE.AUTTAGNO.MODE.MAN

TAGNO.CSV.2TAGNO.CSV.0

Y YY Y

Action

Condition

Model SIO-11


2 DIs and 1 DO are linked to the instrument.

MV = 0DO = OFF

TAGNO.PV.2TAGNO.PV.1TAGNO.PV.0

OPEN

PV = 2DI1 = ON

MV = 2DO = ON

CLOSE

PV = 0DI2 = ON

OUT

Tag No.

SI0 - 21

DITAGNO.PV

Y YY


TAGNO.CSV.0TAGNO.CSV.2

Y YY Y

PV =10DI1 = OFFDI2=OFF

IN

DOTAGNO.PV

First DI No. will be taken as the first answerback signal.

Next DI No. will be taken as the second answerback signal.

TRAVERSE

Action

Condition

Model SIO-21


1 DI and 2 DOs

MV = 0DO2 = ON

TAGNO.PV.0TAGNO.PV.2

PV = 2DI = ON

MV = 2DO1 = 0N

PV = 0DI = OFF

OUT

Tag No.

SI0 - 12

DITAGNO.PV

Y Y

TAGNO.MODE.AUTTAGNO.MODE.AUT

TAGNO.CSV.0 TAGNO.CSV.1TAGNO.CSV.2

Y YY YY

MV =1D01 = OFFD02=OFF

IN

DOTAGNO.PV

FORWARD

STOP

REVERSE

First DO No. will be taken as the first output signal.

Next DO No. will be taken as the second output signal.

Action

Condition

Model SIO-12


2 DIs and 2 DOs

MV = 0DO2 = ON

TAGNO.PV.2TAGNO.PV.1TAGNO.PV.0

PV = 2DI1 = ON

MV = 2DOI = ON

PV = 0DI2 = ON

OUT

Tag No.

SI0 - 22

DITAGNO.PV

Y YY


TAGNO.CSV.0 TAGNO.CSV.1TAGNO.CSV.2

Y YY YY

MV =1DO1 = OFFDO2=OFF

IN

DOTAGNO.PV

First DO No.

PV = 1DI1 = OFFDI2 = OFF

First DI No.

PUMP 1

STOP

PUMP 2

Action

Condition

Model SIO-22


Interlocks are written in the form of sequence table.

Each S.T. has 32 conditions, 32 actions and 32 rules.

General Rules:

Actions will be performed only if all the conditions in the rule are satisfied. Even if one condition is not satisfied, actions will not be performed.

Condition Signal: Y/N

Colour:

Red: Condition is true (satisfied)

Cyan: Condition is false (not satisfied)

Sequence Tables


C01

C02

|

|

C32

A01

A02

|

|

A32

1 2 3 4 32Conditions

Actions

Band Colour :Red : All the conditions in therule are satisfied.

Green : All the conditions in therule are not satisfied.

Sequence Tables


SYSTEM GENERATION

FUNCTION

OPERATION

&

MONITORING

FUNCTION

CONTROL FUNCTION

FUNCTION

TEST

FUNCTION

HUMAN INTERFACE STATIONHUMAN INTERFACE STATION

Virtual test Function

SFCS


Thank you very much for your attention.

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