45418408-PLC-SCADA-PPT

7/28/2019 45418408-PLC-SCADA-PPT

http://slidepdf.com/reader/full/45418408-plc-scada-ppt 1/43

Introduction of SOFCON

Sofcon a Channel Partner of Rockwell Automation inIndia.

It offers Turn-key Automation projects, solutions &

services to power, chemical, pharma, cement, energy,

food, water management etc. industries for over 02

decades.

Sofcon India Pvt. Ltd (Training Wing of Sofcon Group)

is committed to Strengthen practical Knowledge of

Engineers / Working Professionals / Technicians

7/28/2019 45418408-PLC-SCADA-PPT


Sofcon offers various courses

0 PLC Course Contents

0 Digital Electronics Basics

0 PLC Fundamentals0 PLC Hardware & Architecture

0 Source & sink Cencepts

0 Wiring Different field Devices to PLC

7/28/2019 45418408-PLC-SCADA-PPT


SCADA Course Contents

0 Introduction to SCADA Software

0 Creating new SCADA project

0 Creating & editing elementary graphic display0 Attaching controls to graphic objects

0 Real time & historical trends Using alarms & events

0 Application of scripts Communication with PLC

0 Communication with excel

7/28/2019 45418408-PLC-SCADA-PPT


AUTOMATION

0 Automation is a step beyond mechanization.

0 Automation is the use of control systems and

information technologies to reduce the need forhuman work in the production of goods and services.

http://en.wikipedia.org/wiki/Mechanization

http://en.wikipedia.org/wiki/Control_system

http://en.wikipedia.org/wiki/Information_technology

http://en.wikipedia.org/wiki/Information_technology

http://en.wikipedia.org/wiki/Control_system

http://en.wikipedia.org/wiki/Mechanization

7/28/2019 45418408-PLC-SCADA-PPT


Automation Components

0 Sensor for sensing physical

condit ions0 Transmitters

0Control Systems

0Output Devices

7/28/2019 45418408-PLC-SCADA-PPT


Sensors Placed in the field

Automation : Typical instal lation . . . .

Junction Box

F ield Cabling

Control Panel

Control Hardware

SCADA Software

Communication Cable

F ield Cabling

Back

7/28/2019 45418408-PLC-SCADA-PPT


Programmable Logic

Controllers A PLC is a solid state / industrial computer that performs

discrete or sequential logic in a factory environment.

It was originally developed to replace mechanical relays,

timers, counters.

A sequence of instructions is programmed by the user to thePLC memory. Its purpose is to monitor crucial process

parameters and adjust process operations accordingly.

7/28/2019 45418408-PLC-SCADA-PPT


FUNCTIONS It controls output devices based on the status of inputs and a user

written program.

Originally developed to directly replace relays used for discrete

control.It performs functions as

On/Off Control

• Timing Counting

Sequencing Arithmetic

Data Handling

7/28/2019 45418408-PLC-SCADA-PPT


PLC SavesMaterial cost

Installation cost

Troubleshooting

Labor cost

ByReduced wiring & associated errors

Less space

No moving parts - rugged

Possibility of reprogrammingValue added benefits

Reliability

Flexibility

Advanced Function

Communication

Speed

Diagnostics

ADVANTAGES

7/28/2019 45418408-PLC-SCADA-PPT


Packaging Bottling & Canning

Material Handling Machining

Power Generation HVAC/ Building AutomationSecurity Systems Automated Assembly

Paint Lines Water treatment

Industry Cement Automobile Chemicals Plastics

Metals Paper F&B

APLLICATIONSAny application in any industry

that requires electrical control

7/28/2019 45418408-PLC-SCADA-PPT


Various Brands of PLCs

Allen Bradley USA

Siemens Germany

Modicon France

Mitshubishi Japan

GE Fanuc USA

Omron Japan

7/28/2019 45418408-PLC-SCADA-PPT


Programming/

CommunicationDevice

Central

Processing

Unit (CPU)

Input

Circuits

Output

Circuits

Memory

program data

Power supply

Optical isolation Optical isolation

ARCHITECTURE

7/28/2019 45418408-PLC-SCADA-PPT


INPUTSPLC system consists of Inputs

Input

Circuits

1) Inputs - Discrete - On/Off type

o Pushbuttons

o Switches

o

Limit Switcheso Selector Switches

o Proximity sensors

o Photo - electric sensors

2) Inputs devices - Analog

o Resistance Temp. Detectors

o Thermo - couple

7/28/2019 45418408-PLC-SCADA-PPT


Input Modules

1

23

4

56

7

8

9

10

COM

A / D c o

nv er si on

To PLC

Terminal block - this is

where wires from the

field devices are

connected

Field device - this isshowing a simple

switch

Input Module

24 Volt

DCSystem

+ 24 Volts

- 24 Volts

The input module performs tasks

electronically as:

oDetermines the presence or absence of

input

oConverts input single to a DC level use

able PLC

oProvides Electronic isolation B/w input

signal & PLC

7/28/2019 45418408-PLC-SCADA-PPT


Input Modules

Pressure

4-20 mA

Temperature

0-10V DCSwitch

24V DC

7/28/2019 45418408-PLC-SCADA-PPT


PLC system consists of Outputs

OutputCircuits

o Solenoids

o Relays - AC or DC powered

o Contactors

o Motor Starters

o

Indication Lightso Valves

o Alarms

OUTPUTS

7/28/2019 45418408-PLC-SCADA-PPT


7/28/2019 45418408-PLC-SCADA-PPT


Output Modules

Fan

120V ACLight

24V DC

Valve

0-10V DC

The output module operates in oppositemanner from input module

7/28/2019 45418408-PLC-SCADA-PPT


Processor, Controller, or CPU

Stores the control program and data in its memory

Reads the status of connected input devices

Performs Arithmetic and Logical Operations

Executes the control program

Commands connected outputs to change state based on program execution

7/28/2019 45418408-PLC-SCADA-PPT


WORKING OF PROCESSOR

For any execution of program processor has to scan

the entire program

Scan cycle consist of:- Input Scan

Program Scan

Output Scan

Housekeeping

7/28/2019 45418408-PLC-SCADA-PPT


PLC SCAN

7/28/2019 45418408-PLC-SCADA-PPT


Facts about scan cycle

Scan Cycle Depends upon No of I/Os More I/Os More scan time Application Decides the Scan time of a

PLCScan time in normal applications is 1 msto 2 ms & in bigger applications 100 ms to

200 ms

7/28/2019 45418408-PLC-SCADA-PPT


MEMORY

The processor consists of memory locations known as

words

Each word can store binary data

The number of bits that a word can store depends on thesystem of PLC

The 16-bit word is more common

7/28/2019 45418408-PLC-SCADA-PPT


7/28/2019 45418408-PLC-SCADA-PPT


Programming Languages

0 Ladder Diagram (LD)

0 Functional block Diagram (FBD)

0 Structured Text (ST)0 Instruction List (IL)

0 Sequential Functional Chart (SFC)

7/28/2019 45418408-PLC-SCADA-PPT


Ladder BasicsLadder is widely used language & is close to Electrical

basics. In 50-60% places in a ladder: NO, NC

or (XIC, XIO in case of Allen Bradley) are used.

If s/w closed at this add CPUinterprets it as True condition

If s/w Open at this add CPUinterprets it as False condition

If s/w Open at this add CPUinterprets it as True condition

If s/w Closed at this add CPUinterprets it as False condition

7/28/2019 45418408-PLC-SCADA-PPT


CONTROLSIGNALIN1

CONTROLSIGNAL IN2

OUTPUT

0 0 0

0 1 0

1 0 0

1 1 1

7/28/2019 45418408-PLC-SCADA-PPT


OR Gate, Relay and PLC Equivalent Boolean Expression is written as: Y = A + B

In an OR gate, the output is high if any one or all of the inputs

are high. Therefore the OR gate is equivalent to a parallelcombination of normally open switches. Truth Table

Controlsignal IN1

CONTROLSIGNAL IN2

OUTPUT

0 0 0

0 1 1 1 0 1

1 1 1

ar ware ver ew o

7/28/2019 45418408-PLC-SCADA-PPT


ar ware ver ew oMicroLogix 1000

MicroLogix 1000 is a packaged controller containing a power

supply, input circuits, output circuits, and a processor.

7/28/2019 45418408-PLC-SCADA-PPT


Data Files in Micrologix 1000

B i C t f PLC

7/28/2019 45418408-PLC-SCADA-PPT


Basic Components of a PLC

SystemNetwork Interface

Most PLCs have the ability to communicate with other devices. The

PLC will communicate to the other devices through a network interface.

Network connecting other devices

Network

interface

module

PLC

7/28/2019 45418408-PLC-SCADA-PPT


Typical PLC Application

Motor Solenoid 1 Solenoid 2

Solenoid 3

Sensor 1

Sensor 2

Ingredient A Ingredient B

7/28/2019 45418408-PLC-SCADA-PPT


Programming a PLC – Conveyor

example

Light 1Photoeye 2 Photoeye 1

Motor 1

7/28/2019 45418408-PLC-SCADA-PPT


PLC Programming Software

7/28/2019 45418408-PLC-SCADA-PPT


Supervisory Control and Data

Acquisition (SCADA) Systems0 SCADA systems

0 used to monitor and control a plant or equipment in

industries

such as:

0 telecommunications, water and waste control, energy,

oil and gas refining and transportation

7/28/2019 45418408-PLC-SCADA-PPT


PURPOSE

A SCADA SYSTEM

Gathers information from Remote Terminal Units

(RTUs) and/or (PLCs), and the central host and the

operator terminals(such as where a leak on a pipeline

has occurred).

Transfers the information back to a central site, then

alerts the home station that a leak has occurred

carries out necessary analysis and control,

7/28/2019 45418408-PLC-SCADA-PPT


What do SCADA Provide?

Dynamic Process Graphics

Basic SCADA functionality Real time &historical trend

Alarms

Recipe Management

Security

Report Generation

Logging, Archiving

Device connectivity

Data base connectivity

Interfaces to H/W and S/W Interfaces to ERP- and Expert-Systems

Development Tools

37

7/28/2019 45418408-PLC-SCADA-PPT


7/28/2019 45418408-PLC-SCADA-PPT


7/28/2019 45418408-PLC-SCADA-PPT


7/28/2019 45418408-PLC-SCADA-PPT


Configuration

of SCADA Systems

9 - 12 Oct. 2000 PCaPAC'2000 - DESY 41

Field Bus

Data Server PLC’s Data Server

C fi ti

7/28/2019 45418408-PLC-SCADA-PPT


Configuration

of SCADA Systems 2nd

42

PLC Programs

Communication

Processor

•Analog-Input

•Value-AI-0

•Value-AI-1

•Analog-Output

•Value-AO-0

•

Value-AO-1Field Bus

•Analog-Input

•Vacuum_VALUE

•Pressure_VALUE

•Analog-Output

•Valve_1_OUT

•

Heater_1_OUT

Mapping

SCADA

Play

http://c/study%20material/YouTube%20-%20Water%20Treatment%20-%20SCADA-%20Plant-IQ.flv

http://c/study%20material/YouTube%20-%20Water%20Treatment%20-%20SCADA-%20Plant-IQ.flv

7/28/2019 45418408-PLC-SCADA-PPT


THAT’S IT FROM THE

PRESENTATION AREA

43

45418408-PLC-SCADA-PPT

Documents

45418408-PLC-SCADA-PPT