Yokogawa DCS Training

Distributed Control System YOKOGAWA

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

TRAINING CENTRE

TRAINING CENTRE YOKOGAWA INDIA LIMITED Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

Basic Control Loop

Basic Loop Transmitter

SV PV

4-20 mA

I/P I/P Convertor

MV

Controller

4-20 mA

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

Final Control Element Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

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Process Control Systems

Process control systems are classified into ¾ Analog Control Systems ¾ Digital Control Systems

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Analog Control System

Analog Control System Operational Amplifier Transmitter Signal Conversion

1 to 5V DC

4-20 mA DC

I/P Set Point

Final Control Element Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

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Digital Control System

Digital Control System Memory Unit Control Unit

1 to 5V DC A/D 4-20 mA DC D/A

I/P

Digital

Input Unit Output Unit

Processor Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

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Arithmetic Unit

Set Point

Digital Control System

Digital Control Systems are further classified into ¾ Centralized Control Systems ¾ Distributed Control Systems

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Centralized Control System

Centralized Control System Centralized Control , Centralized Monitoring PV1

Input Signals from Field

PV2 PV3

MV1

Centralized Processing

MV2 MV3

Unit PVn

MVn

CPU

SV1 SV2 SV3

SVn

Set Points Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

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Output Signals to Field

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.

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Distributed Control System

Distributed Control System Distributed Control PV1

Input Signals from Field

Centralized Monitoring

MV1

Output Signals to Field

FCS

PV8

MV8 SV 8

SV1 PV9

MV9

FCS

PV16

OPS

OPS MV16 SV16

SV9 PV17

MV17

FCS

PVn

MVn

SV17

SVn

Set Points Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

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Communication Bus

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

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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. 9 Field wiring is considerably less. 9 Maintenance and trouble shooting becomes very easy. 9 Cost effective in the long run. Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

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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 CS From ’93 (2113 Systems) CENTUM-XL From ’88 to ‘00 (1703 Systems) CENTUM/CENTUM V From ’75 to ‘93 (1983 Systems) Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

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As of March ‘03

CS3000 - System Configuration

Ethernet HIS / ENG

Remote Domain System

HIS

CGW V net

BCV

CS, CS 1000 CENTUM-XL, -V MXL

PFCS ooo

LFCS FFCS Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

KFCS

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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.

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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

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FFCS Hardware View

Eight FIO slots

Detachable bottom unit EC401 ESB bus coupler Power supply unit (Note) CP401 CPU module AIP504 Vnet coupler (10BASE2 Vnet cable is used.) Note: Two I/O slots are to be used for NIU extension. Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

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Hardware Configuration- Local Node V net FFCS

Up to 6 Modules SB401 SB401

PW48X

PW48X

SB401 SB401

PW48X

PW48X

PW48X

PW48X

Minimum Configuration

ESB bus

SB401 SB401

FIO: Max. 8

PW48X

EC401 EC401 CP401 CP401 PW48X

PW48X

CP401 CP401 PW48X

FFCS

Up to 8 Modules

Maximum Configuration

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Local node Max. 3

Hardware Configuration – Remote Node V net

PW48X

EB401 EB401 EB401 EB401 EB401 EB401 CP401 CP401 PW48X

FFCS

Optical Repeater can be used

Expanded Remote node up to 3 Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

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PW48X

PW48X

ER bus EB501 EB501

PW48X

PW48X

Remote node EB501 EB501

PW48X

PW48X

Remote node EB501 EB501

Remote node

HIS (Human Interface Station) The Station for Real time Plant Monitoring/Operation

Plant Operation by thousands of Graphics

Real time display of Plant Abnormalities.

Easy Operation by a mouse, a keyboard etc. Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

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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. Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

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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

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V net Communication

HIS

V net

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 repeater) 1.6 Km (with coax. repeater) Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

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HIS

V net : Extension Details

HIS

HIS

HIS

Optical Fibre

Optical Fibre

T

R

R

R

R

T

T

R

R

R

R

T

V net

Max. 500m

Max. 15 km

Max. 500m

Max. 15 km

Overall Max. 20 km

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Co-axial Cable

Max. 500m

Bus Convertor ETHERNET

EOPS

HIS

Domain connection

V-NET

HF BUS

BCV EFCD

FCS

ooo

ooo

ooo

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

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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

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System Message Window

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

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Type the TAGNAME to call the instrument faceplate window

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System Message Area SYSTEM MESSAGE AREA ICONS

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

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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. Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

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Operation Windows

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

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Instrument Faceplate Window

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Tuning Window

Select this icon to display the Tool box

Select this icon to display the Tuning Window

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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”.

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Tuning Window

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Mode Status

MAN (Manual) AUT (Auto) CAS (Cascade) PRD (Primary Direct)

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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 instrument can be changed by increment/decrement keys or through data entry box. The SV of the instrument can be changed either by set point change key or using ITEM and DATA in the data entry box.

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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 data entry box. The MV of the instrument cannot be changed by any method.

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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. Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

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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. Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

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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.

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Mode Sub Status

IMAN (INITIALIZATION MANUAL MODE) In a cascade loop, if the cascade is broken by taking 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. Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

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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 Change the mode status of the secondary controller to CAS. The primary controller will automatically c o m e o u t o f I M A N mode. Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

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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.

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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.

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Process Alarm Status ALARM STATUS

PROCESS STATUS

ALARM

ITEM TO BE SET IN THE TUNING

SETTINGS

PV BAR COLOUR

TAG MARK COLOUR

REMARKS

PANEL NR

PROCESS NORMAL

----------

----------

GREEN

GREEN

----------

HH

PV VERY HIGH

PV > HH

HH

RED

RED

----------

HI

PV HIGH

PV > PH

PH

RED

RED

----------

LL

PV VERY LOW

PV < LL

LL

RED

RED

----------

LO

PV LOW

PV < PL

PL

RED

RED

----------

DV+ / -

DEVIATION ALARM

DV > DL DV = PV - SV

DL DEVIATION LIMIT

YELLOW

YELLOW

VEL + / -

VELOCITY ALARM

VEL =

VL VELOCITY LIMIT

YELLOW

YELLOW

IOP + / -

INPUT OPEN

INPUT IS OUT OF RANGE

CHECK RAW VALUE IN TUNING WINDOW

RED

RED

OOP

OUTPUT OPEN

OUTPUT LINE IS OPEN

RED

RED

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PV/

T

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RAW IS ACTUAL INPUT INTERMS OF %

Process Alarm Status ALARM STATUS

PROCESS STATUS

ALARM SETTINGS

ITEM TO BE SET IN THE TUNING

PV BAR COLOUR

TAG MARK COLOUR

REMARKS

PANEL MHI

MV HIGH

MV > MH

MH

YELLOW

YELLOW

OCCURS ONLY IN CAS/ AUTO MODE

MLO

MV LOW

MV < ML

ML

YELLOW

YELLOW

OCCURS ONLY IN CAS/ AUTO MODE

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Alarm Sub Status

AOF (Alarm Output Off) CAL (Calibration)

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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 on the process alarm window.

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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.

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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.

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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 bypassed. Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

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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.

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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 Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

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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.

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Security Level KEY POSITION/

MONITORING

OPERATION

ACCESS LEVEL

FACEPLATE DISPLAY

FACEPLATE OPERATIONS, PROCESS DATA INPUT

OPERATIONS

OFF

ON

ENG

OFF

ON

ENG

1

O

O

O

O

O

O

2

O

O

O

*1

O

O

3

O

O

O

*2

O

O

4

O

O

O

X

O

O

5

O

O

O

X

X

X

6

X

O

O

X

X

O

7

X

X

O

X

X

X

8

X

X

X

X

X

X

O : Can be executed X : Cannot be executed *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

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Control Drawing Display

Select this icon to call the Control Drawing display

Control drawing display

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Control Group Window

Select this icon to display the Tool box

Select this icon to display the Control Group Window

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

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Control Group Window – 16 Instruments

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Trend Window

Select this icon to display the Tool box

Select this icon to display the Trend Window

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Trend Window

TREND WINDOW records the PV, SV and MV of various instruments. Trend can be displayed in Trend Group Format or in Trend Point Format. Maximum 8 pens can be assigned in one Trend Group Window Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

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Trend Group Window

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Trend Point Window

Double click here to call the Trend Point Window

Trend Point Window

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Calling Instrument from Trend Window

Double click here to call the Instrument faceplate Window

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

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Process Alarm Window

Select this icon to call the Process Alarm Window

PROCESS ALARM WINDOW displays the latest 200 process alarms. Alarms can be acknowledged either as a Group or as Individual alarm.

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Process Alarm Window

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

This icon is used to acknowledge the process alarms.

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

PROCESS ALARM WINDOW displays the latest 200 process alarms. Alarms can be acknowledged either as a Group or as Individual alarm.

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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 Group or as Individual message.

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Graphic Window

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Overview Window

Select this icon to display the Tool box

Select this icon to display the Overview Window

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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 Block •Window Display Block •Comment Block

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Overview Window

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Process Report Window

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Historical Message Report Window

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Sequence Tables

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Sequence Tables

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Logic Charts

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Logic Charts

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System Status Window

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System Alarm Window

SYSTEM ALARM WINDOW displays the latest 100 system alarms. Alarms can be acknowledged either as a Group or as Individual alarm.

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Navigator Window

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Digital Inputs 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.

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Digital Inputs Syntax Conditions TAGNO.PV.ON

Y

N

DI = OFF PV = 0 PV=1 DI=ON

VALVE PV=1 DI=1 Contact is closed in field OPEN

PV = 0 DI = 0 CLOSE

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Contact is open in field

Digital Outputs 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 has to be made ON on a particular condition and has to be made OFF on another condition

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Digital Outputs Syntax PUMP

PV=1 DO=1

OFF PV = 0

ON Condition

Output relay is energised

TAGNO.PV.ON

N

Y

CO1

Y

Y

ON PV = 1 N

Y TAGNO.PV.L

PV=0 DO=0 Output relay is deenergised

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Action

OFF

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Y

Y

TAGNO.PV.H

Y

TAGNO.PV.P

Y

N

ON PV=1 OFF PV=0

Latch & Unlatch 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 Start

Output Unlatched (L) (level triggered)

Stop

R-1

Start

Output Latched (H) (edge triggered)

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

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.

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Switches 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.

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Global Switches Max.256 GS/FCS System Code: %GSxxxxSddss %GSxxxx - Switch number (0001 - 0256) dd ss

- Domain number - Station number

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Common Switches Max.4000 SW/FCS System Code: %SWxxxxSddss %SWxxxx - Switch number (0001 - 4000) dd ss

- Domain number - 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.

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Switches Syntax

Condition

TAGNO.PV.ON

Action

Y

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

CO1

Y

TAGNO.PV. L

Y

TAGNO.PV.H

Y

N- PV=0

TAGNO.PV.P

Y

PV=1

BYPASSSW

PV=1, SW=ON BYPASS

PV=0, SW=OFF NORMAL

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Timer

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 DL = Deviation limit Yokogawa Electric Corporation Copyright © by Yokogawa Electric Corporation

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Timer Operation 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 status is STOP

Alarm

4. When the timer is paused while timing PAUS

Status

5. When the DV < DL

is

alarm status is PALM

Any of the alarm status can be referred in sequence table as a condition signal.

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Counter 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.

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Operator Guide Messages 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 Condition CO1

Y

%OGXXXX.PV.NON

Y

Action

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Message 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

Condition CO1

Y N

C02 Action %ANXXXX.PV.L %ANXXXX.PV.H

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Y Y

N

Sequence Instruments 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.

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Model SO-1 One DO is linked with the instrument. Loop Connection Condition

Tag No. OPEN

MV = 2 DO = ON

C01 Y

SO - 1

C02

SI0 Model

OUT

Action TAGNO.CSV.2

Wiring

CLOSE

MV = 0 DO = OFF

DOTAGNO.PV (OR) %Znnuscc

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Y

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TAGNO.CSV.0

PIO

Y Y

Model SO-2 Two DO’s are linked with the instrument. Loop Connection Condition

Tag No. OPEN

MV = 2 DO1 = ON

SO - 2

C01

Y

Action TAGNO.CSV.0

Y

TAGNO.CSV.1

Y

TAGNO.CSV.2

Y

SI0 Model

OUT MV = 1 DO1 = OFF D02 = OFF

Wiring

DOTAGNO.PV

PIO

(OR) %Znnuscc

CLOSE

MV = 0 DO2 = ON This DO number and the next consecutive DO number will be taken as the 2 output signals automatically.

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Model SI-1 One DI is linked to the instrument.

Condition

Tag No. OPEN

PV = 2 DI = ON

TAGNO.PV.2 TAGNO.PV.0

SI - 1 IN

Action

CLOSE

PV = 0 DI = OFF

DITAGNO.PV (OR)

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%Znnuscc

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PIO

Y Y

Model SI-2 Two DI’s are linked to the instrument.

Condition

Tag No. OPEN

PV = 2 DI1 = ON

TAGNO.PV.0 TAGNO.PV.1

SI - 2

Y Y

TAGNO.PV.2

Y

IN

TRAVERSE

PV = 1 DI1 = OFF DI2 = OFF

Action

DITAGNO.PV

PIO

(OR) %Znnuscc CLOSE

PV = 0 DI2 = ON

This DI number and the next DI number will be taken as the 2 answerback inputs.

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Model SIO-11 1 DI and 1 DO is linked to the instrument. Output Signal

Answerback Signal PV = 2 DI = ON

MV = 2 DO = ON

Condition

Tag No. IN

SI0 - 11

START

TAGNO.PV.0 TAGNO.PV.2 TAGNO.ALRM.ANS+ TAGNO.ALRM.ANS-

Y Y Y Y

TAGNO.MODE.AUT TAGNO.MODE.MAN TAGNO.CSV.2 TAGNO.CSV.0

Y Y Y Y

OUT Action

DOTAGNO.PV PV = 0 DI = OFF

MV = 0 DO = OFF

DITAGNO.PV

STOP

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Model SIO-21 2 DIs and 1 DO are linked to the instrument. Condition MV = 2 DO = ON

PV = 2 DI1 = ON

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

Y Y Y

TAGNO.MODE.AUT TAGNO.MODE.MAN TAGNO.CSV.0 TAGNO.CSV.2

Y Y Y Y

Tag No.

OPEN

SI0 - 21 PV =10 DI1 = OFF DI2=OFF

IN

OUT

Action

TRAVERSE DITAGNO.PV

PV = 0 DI2 = ON MV = 0 DO = OFF

DOTAGNO.PV

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

CLOSE

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Model SIO-12 1 DI and 2 DOs Condition MV = 2 DO1 = 0N

PV = 2 DI = ON

SI0 - 12 MV =1 D01 = OFF D02=OFF

IN

OUT

STOP DITAGNO.PV

PV = 0 DI = OFF

Action

TAGNO.MODE.AUT TAGNO.MODE.AUT TAGNO.CSV.0 TAGNO.CSV.1 TAGNO.CSV.2

Y Y Y Y Y

DOTAGNO.PV

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

REVERSE

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Y Y

Tag No.

FORWARD

MV = 0 DO2 = ON

TAGNO.PV.0 TAGNO.PV.2

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Model SIO-22 2 DI’s and 2 DO’s Condition MV = 2 DOI = ON

PV = 2 DI1 = ON

SI0 - 22 PV = 1 DI1 = OFF DI2 = OFF

IN

Action

OUT

STOP DITAGNO.PV

First DI No.

MV = 0 DO2 = ON

DOTAGNO.PV

First DO No.

PV = 0 DI2 = ON PUMP 2

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Y Y Y

TAGNO.MODE.AUT TAGNO.MODE.MAN TAGNO.CSV.0 TAGNO.CSV.1 TAGNO.CSV.2

Y Y Y Y Y

Tag No.

PUMP 1

MV =1 DO1 = OFF DO2=OFF

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

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Sequence Tables 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)

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Sequence Tables 1

2

3

4

32

Conditions C01 C02 | |

C32

Actions A01 A02 |

Band Colour :

|

Red : All the conditions in the rule are satisfied. Green : All the conditions in the rule are not satisfied.

A32

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Virtual test Function TEST

SYSTEM GENERATION

FUNCTION

FUNCTION OPERATION & MONITORING FUNCTION

CONTROL FUNCTION FUNCTION

SFCS HUMAN INTERFACE STATION

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Thank you very much for your attention.

YOKOGAWA INDIA LIMITED

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