PRESENTATION ON PLC AND SCADA

Presented by Vishal BTECH(EEE) IIIrd year Northern India Engineering College Delhi-110053

Contents What is PLC? History of PLC Major components of PLC Operational sequence of PLC Ladder logic Advantages Disadvantages Application Introduction of scada What is SCADA? History of scada Scada software Leading company of SCADA Element of scada Where is scada used

(PROGRAMMABLE LOGIC CONTROLLER)

PLC SYSTEM

What is PLC?

Plc is a semiconductor device. Which is use for controlling Any industrial process.

Plc is combination of hardware and software.

PLC is a digital computer designed for multiple inputs and outputs arrangements.

A PLC is a example of real time system.

Block Diagram Of PLC

Input & Output Module

Input module output module• Push button

motor • Sensors

transistor• Toggle button

display

History of PLC PLC was introduced in year 1960’s

First PLC was designed and developed by MODICON as a relay replacer for general motors.

Earlier it was a machine with thousands of electronic parts.

Major components of a common PLC

POWER SUPPLY

I/O MODULE

PROCESSORPROGRAMMING DEVICE

PLC operation sequence

Self test

Input scan

Logic solve /scan

Output scan

Types of communication in PLC

Serial communica

tion

Parallel communica

tion

bit by bit transmissio

nWhole data transmissio

n

Classification of Allen Bradely PLCSmall micro logix Medium Large series SLC series Micrologix 1000 SLC 5/01

Compact logix Micrologix 1100 SLC 5/02

Control logix Micrologix 1200 SLC 5/03

Flex logix Micrologix 1400 SlC 5/04

Micrologix 1500 SLC 5/05

Data Files & Identifiers Data files Identifiers Input I Output O Status S2 Binary B3 Timer T4 Counter C5 Registor Control R6 Integer Registor N7

Addressing Format Of PLC

Input Format Identifier : slot number . Word address/bit address

Output FormatIdentifier : slot number . Word address/bit address

Ladder LogicThe ladder logic is the oldest programming language for PLC.It is well suited to express combinational logics.The main ladder logic symbol represent the elements.

Element of ladder logics

Programming ExampleLadder logic program for start/stop of motor :

Advantages & Disadvantages of PLCAdvantage of plc: Reliability. Reduced space. Energy saving. High speed of operation. Shorter project time.

Disadvantages of PLC: Fixed ckt operation. Limited design and cost of operation. PLCs manufactures offer only closed architectures.

Application:Few examples of industries where PLC is

used:1) Robots manufacturing and control.2) Car park control.3) Food processing.4) Materials handling5) Machines tools.6) Conveyer system.

(SUERVISORY CONTROL AND DATA ACQUISITION)

SCADA SYSTEM

What is SCADA?supervisory Control & Data Acquisition

Supervisory

Operator’s , engineer’s, supervisor’s, etc

Control

Monitoring Limited Telemetry Remote/local

Data Acquisition

Access and acquire information or data from the equipment Sends it to different sites through telemetry Analog/digital

History of SCADA Egyptian supervisory First half of the 20th

century Development from

telemetry system Weather predictions Rail road tracks Two way system 1960s idea for

supervisory 1970s radio system

SCADA software

SCADA software manufactures

Intellection (fix 32)

Iconic ( geneis32 V7.0)

Wonder ware (InTouch)

Citect ( SCADA 5.42)

National instruments

(lookout SCADA)

Properties in INTOUCH Software1) Value display2) Location3) Visibility4) Percentages filling5) Object size6) Blink7) Orientation8) Fill colour9) Line colour10) Show window/hide window

Features in SCADA

1) Window script2) Recipe management3) Real time trends4) Secuirty5) Alarms6) Data base connectivity

Hardware of SCADA

Block Diagram Of SCADA

where is SCADA used? Main SCADA application: Water and wastewater Power Oil and gas Research facilities Transporation Security system Communication control

Conclusion

THANK YOU