Cs3000 Operation With Ffcs

Yokogawa Electric Corporation 2-9-32 Nakacho, Musashino-shi Tokyo, 180-8750 JAPAN

Distributed Control

System

YOKOGAWA

TRAINING CENTRE

Basic Loop

Controller

I/P

Transmitter

I/P

Convertor

PV

MV

SV

4-20 mA

4-20 mA

Pneumatic Signal

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

Process Control Systems

Process control systems are classified into

¾ Analog Control Systems

¾ Digital Control Systems

Analog Control System

Signal

Conversion

I/P

4-20 mA DC

1 to 5V DC

Operational Amplifier

Set Point

Final Control Element

Transmitter

Digital Control System

I/P

4-20 mA DC

A / D

1 to 5V DC

D / A

Digital

Output

Unit

Input

Unit

Memory

Unit

Control

Unit

Arithmetic

Unit

Set

Point

Digital Control System

Digital Control Systems are further classified

into

¾ Centralized Control Systems

¾ Distributed Control Systems

Centralized

Processing

Unit

CPU

Centralized Control System

Input

Signals

from

Field

Output

Signals

to

Field

Centralized Control , Centralized Monitoring

PV1

PV2

PVn

PV3

MV1

MV2

MVn

MV3

Centralized Control System

Drawbacks Of CCS:

¾ If the CPU fails the entire plant gets affected.

¾ 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.

Distributed Control System

Input

Signals

from

Field

Distributed Control Centralized Monitoring

Communication

Bus

Output

Signals

to Field

MV1

MV8

FCS

PV1

PV8

SV1

SV

8

_MV9

MV16

FCS

PV9

PV16

SV9

SV16

MV17

FCS

PV17

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:

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 flexible

and simple.

9 Information regarding the process is presented to the user in

various formats.

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 CS

From ’93 (2113 Systems)

From ’88 to ‘00 (1703 Systems)

CS3000 - System Configuration

CS, CS 1000

CENTUM-XL, -V

MXL

BCV

CGW

Remote Domain System

V net

HIS

PFCS

Ethernet

HIS / ENG

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.

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 .

FFCS Hardware View

Power supply unit

CP401 CPU module

Eight FIO slots

Eight FIO slots

EC401 ESB bus coupler

(Note)

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

Detachable

bottom unit

Hardware Configuration- Local Node

FIO: Max. 8

Local node

Max. 3

ESB bus

ESB bus

Up to 6

Modules

Up to 8

Modules

CP401

CP401

_PW48X

_PW48X

V net

V net

FFCS

FFCS

CP401

CP401

_PW48X

_PW48X

EC401

EC401

SB401

SB401

_PW48X

_PW48X

SB401

SB401

_PW48X

_PW48X

FFCS

FFCS

Minimum Configuration

Minimum Configuration

Hardware Configuration – Remote Node

V net

V net

FFCS

FFCS

Remote node

Remote node

ER bus

ER bus

EB401 EB401EB401

EB401

EB401

EB401

EB401

CP401

CP401

_PW48X

_PW48X

EB501

EB501

_PW48X

_PW48X

Remote node

Remote node

EB501

EB501

_PW48X

_PW48X

EB501

EB501

_PW48X

_PW48X

Remote node

Remote node

Optical Repeater can be used

The Station for Real time Plant Monitoring/Operation

Real time display of Plant Abnormalities.

HIS (Human Interface Station)

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 Processor

Main Memory

: 256 MB (Minimum)

Hard Disk : 20 GB or more

Video Display

: 1024 x 768 or more, 256 colours

CRT Monitor

: Multi Scan 17” monitor or larger

Serial Port

: RS232C one port or more

Parallel Port

: One port or more

Extension Slot

: PCI slot for V/VL net card, ISA slot for Ethernet card

Power Supply

: 200-240V AC

Basic Software

: Windows NT with Service Pack ,Windows 2000 or

Windows XP

CONSOLE HIS

The 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 802.4

Access Control

: Token Passing

Trans. Speed

: 10 Mbps

Trans. Distance

: 500m to 20km

Media

: Coaxial/Optical Fibre

Std. max. length : 185 m

Max. length : 20 Km (with optical

V net

HIS

HIS

V net : Extension Details

HIS

HIS

HIS

Optical

Fibre

R

R

R

R

T

T

Optical

Fibre

R

R

R

R

T

T

Max. 500m

Max. 500m

Max. 500m

Max.

15 km

Max.

15 km

Overall Max. 20 km

Co-axial Cable

V 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 CS3000

system

Bus Convertor

HF BUS

EFCD

FCS

HIS

BCV

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 the

System Message Area

These windows can also be accessed by the keys

on the Operator Keyboard

SYSTEM MESSAGE AREA ICONS

Operation Keyboard

Operation Keyboard

OPERATION 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 Window

7. Operator Guide message

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 “= “ can

be changed.

Displaying a “Tuning Window”

1.Double click on a Tag’s name

on a

“Control Window”

and a faceplate window

will appear.

Select the “Tuning “

window icon

from the toll box.

2.

Select

“NAME icon

in the

System Message

Area”

then enter the

“TAGNAME”.

Mode Status

MAN (Manual)

AUT (Auto)

CAS (Cascade)

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 any

method.

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.

Primary Direct Mode

PRD: PRIMARY DIRECT MODE

In 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

b r o k e n b y t a k i n g t h e s e c o n d a r y

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

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 mode

C h a n g e t h e m o d e s t a t u s o f t h e

secondary controller to CAS. The

primary controller will automatically

c o m e o u t o f I M A N

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

---RED

RED

LL

PV < LL

PV VERY

LOW

LL

---RED

RED

PL

PV < PL

PV LOW

LO

RED

RED

OUTPUT LINE IS

OUTPUT

OOP

RAW IS

ACTUAL INPUT

INTERMS OF %

RED

RED

CHECK RAW

VALUE IN

TUNING

WINDOW

INPUT IS OUT

OF RANGE

INPUT

OPEN

IOP + /

-YELLOW

YELLOW

VL

VELOCITY

LIMIT

VEL = PV/ T

VELOCITY

ALARM

VEL + /

-YELLOW

YELLOW

DL

DEVIATION

LIMIT

DV > DL

DV = PV - SV

DEVIATION

ALARM

DV+ /

-

---RED

RED

PH

PV > PH

PV HIGH

HI

---RED

RED

HH

PV > HH

PV VERY

HIGH

HH

---GREEN

GREEN

---PROCESS

NORMAL

NR

REMARKS

TAG 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

YELLOW

YELLOW

ML

MV < ML

MV LOW

MLO

OCCURS ONLY

IN CAS/ AUTO

MODE

YELLOW

YELLOW

MH

MV > MH

MV HIGH

MHI

REMARKS

TAG 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 type

of the alarm.

• Audible alarm is heard.

• The alarm status (HI/LO/HH/LL etc…) is displayed

Alarm Sub Status

AOF (Alarm Output Off)

In AOF mode:

The tag mark changes to dark blue colour irrespective

of 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 are

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 confirmation

3 - Auxillary tag –I without Confirmation

7 - Auxillary tag –I with Confirmation

4 - 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

O : Can be executed

X : Cannot be executed

X

X

X

X

X

X

8

X

X

X

O

X

X

7

O

X

X

O

O

X

6

X

X

X

O

O

O

5

O

O

X

O

O

O

4

O

O

*2

O

O

O

3

O

O

*1

O

O

O

2

O

O

O

O

O

O

1

ENG

ON

OFF

ENG

ON

OFF

OPERATIONS

PROCESS DATA INPUT

FACEPLATE OPERATIONS,

FACEPLATE DISPLAY

ACCESS LEVEL

OPERATION

MONITORING

KEY POSITION/

Control Drawing Display

Select this icon to

call the Control

Drawing display

Control Group Window

Select this icon to display

the Tool box

Select this icon to display

the Control Group

Control Group Window – 8 Instruments

Control group windows

are used to

display multiple instrument faceplates.

Maximum 8 or 16 instrument faceplates

can be displayed in one Control Group

Window

Normally the instruments are monitored and

operated from this window.

Trend Window

Select this icon to display

the Tool box

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 Group

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 WINDOW

displays the predefined messages to guide

the operator regarding the current process

status and /or the actions to be taken.

OG messages can be acknowledged either as a

Overview Window

Select this icon to display

the Tool box

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.

System Alarm Window

SYSTEM ALARM WINDOW displays the

latest 100 system alarms.

Alarms can be acknowledged either as a

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 Syntax

Y

TAGNO.PV.ON

DI = OFF

PV = 0

PV=1

DI=ON

N

VALVE

PV=1

DI=1

PV = 0

OPEN

Contact is closed in field

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 etc

ii) 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

Output relay is

energised

PV=1

DO=1

PUMP

PV=0

DO=0

Output relay is

deenergised

OFF

ON

Y

Y

Y

TAGNO.PV.ON

CO1

ON

N

PV = 1

TAGNO.PV.L

TAGNO.PV.H

TAGNO.PV.P

Y

Y

Y

N

Condition

Action

N

Y

Y

PV = 0

OFF

OFF PV=0

ON PV=1

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

Output

Unlatched (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-1

Stop

Start

Start

Stop

R - 1 - 1

(Latching or hold on contact)

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.

Max.256 GS/FCS

System Code: %GSxxxxSddss

%GSxxxx -

Switch number (0001 - 0256)

dd

- Domain number

ss

- Station number

Global Switches

Max.4000 SW/FCS

System Code: %SWxxxxSddss

%SWxxxx -

Switch number (0001 - 4000)

dd

- Domain number

ss

- 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.

Y

Y

Y

Y

Y

N - PV=0, SW=OFF

PV=1, SW=0N

N

N- PV=0

PV=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 timer

Max 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

1. When the timer is started, PV starts incrementing

automatically

Alarm status is NR

2. When the timer has finished timing, i.e. when PV = PH

Alarm status is CTUP

3. When the timer is stopped while timing

Alarm

status is STOP

4. When the timer is paused while timing

Status

is

PAUS

5. When the DV < DL

alarm status is PALM

Any of the alarm status can be referred in sequence table

as a condition signal.

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

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

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

Action

Y

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.

One DO is linked with the instrument.

OPEN

MV = 2

DO = ON

CLOSE

MV = 0

DO = OFF

OUT

Loop Connection

Tag No.

SO - 1

DOTAGNO.PV

Wiring

SI0 Model

(OR)

%Znnuscc

PIO

C01

C02

Y

Y

TAGNO.CSV.2

TAGNO.CSV.0

Action

Y

Y

Condition

Model SO-1

Two DO’s are linked with the instrument.

OPEN

MV = 2

DO1 = ON

CLOSE

MV = 0

DO2 = ON

OUT

Loop Connection

Tag No.

SO - 2

DOTAGNO.PV

Wiring

SI0 Model

(OR)

%Znnuscc

PIO

C01

Y

TAGNO.CSV.0

TAGNO.CSV.1

TAGNO.CSV.2

MV = 1

DO1 = OFF

D02 = OFF

Y

Y

Y

This DO number and the next consecutive

DO number will be taken as the 2 output

Action

Condition

One DI is linked to the instrument.

OPEN

PV = 2

DI = ON

CLOSE

PV = 0

DI = 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 DI’s are linked to the instrument.

OPEN

PV = 2

DI1 = ON

CLOSE

PV = 0

DI2 = ON

IN

Tag No.

SI - 2

DITAGNO.PV

PIO

TAGNO.PV.0

TAGNO.PV.1

TAGNO.PV.2

PV = 1

DI1 = OFF

DI2 = OFF

Y

This DI number and the next DI number

will be taken as the 2 answerback inputs.

Y

Y

Condition

Action

TRAVERSE

Model SI-2

(OR) %Znnuscc

1 DI and 1 DO is linked to the instrument.

OUT

Tag No.

SI0 - 11

DOTAGNO.PV

TAGNO.PV.0

TAGNO.PV.2

TAGNO.ALRM.ANS+

TAGNO.ALRM.ANS-Answerback

Signal

START

PV = 2

DI = ON

MV = 2

DO = ON

Output

Signal

STOP

PV = 0

DI = OFF

MV = 0

DO = OFF

_DITAGNO.PV

IN

Y

Y

Y

Y

TAGNO.MODE.AUT

TAGNO.MODE.MAN

TAGNO.CSV.2

TAGNO.CSV.0

Y

Y

Y

Y

Action

Condition

Model SIO-11

2 DIs and 1 DO are linked to the instrument.

MV = 0

DO = OFF

TAGNO.PV.2

TAGNO.PV.1

TAGNO.PV.0

OPEN

PV = 2

DI1 = ON

MV = 2

DO = ON

CLOSE

PV = 0

DI2 = ON

OUT

Tag No.

SI0 - 21

DITAGNO.PV

Y

Y

Y

TAGNO.MODE.AUT

TAGNO.MODE.MAN

TAGNO.CSV.0

TAGNO.CSV.2

Y

Y

Y

Y

PV =10

DI1 = OFF

DI2=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

1 DI and 2 DOs

MV = 0

TAGNO.PV.0

TAGNO.PV.2

PV = 2

DI = ON

MV = 2

DO1 = 0N

PV = 0

DI = OFF

OUT

Tag No.

SI0 - 12

DITAGNO.PV

Y

Y

TAGNO.MODE.AUT

TAGNO.MODE.AUT

TAGNO.CSV.0

TAGNO.CSV.1

TAGNO.CSV.2

Y

Y

Y

Y

Y

MV =1

D01 = OFF

D02=OFF

IN

DOTAGNO.PV

FORWARD

STOP

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

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

Action

Condition

2 DI’s and 2 DO’s

MV = 0

DO2 = ON

TAGNO.PV.2

TAGNO.PV.1

TAGNO.PV.0

PV = 2

DI1 = ON

MV = 2

DOI = ON

PV = 0

DI2 = ON

OUT

Tag No.

SI0 - 22

DITAGNO.PV

Y

Y

Y

TAGNO.MODE.AUT

TAGNO.MODE.MAN

TAGNO.CSV.0

TAGNO.CSV.1

TAGNO.CSV.2

Y

Y

Y

Y

Y

MV =1

DO1 = OFF

DO2=OFF

IN

DOTAGNO.PV

First DO No.

PV = 1

DI1 = OFF

DI2 = 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)

Sequence Tables

C01

C02

|

|

C32

A01

A02

|

|

A32

1

2

3

4

32

Conditions

Actions

Band Colour :

Red : All the conditions in the

rule are satisfied.

Green : All the conditions in the

rule are not satisfied.

SYSTEM GENERATION

FUNCTION

OPERATION

&

MONITORING

FUNCTION

CONTROL FUNCTION

FUNCTION

TEST

FUNCTION

Thank you very much for

your attention.