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Sushant Kumar7th Sem

Electrical 4th Yearttp://powerpointpresentationon.blogspot.com

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Productivit

y

Quality

LaborCost

Plant

TotalAutomation

ManufacturingCompetitivenessSolution

What is Automation ?

Automation is basically the delegation of human controlfunction to technical equipment for

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History of Automation

Pneumatic Control

Hard wired logic Control

Electronic Control using Logic Gates

Programmable Logic Controller

Manual Control

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PROGRAMMABLELOGIC

CONTROLLER

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What is PLC ?

Advantages of PLCReliability in operation, Small physical size, Shorter project time, Speed inOperation, Ease of maintenance/Troubleshooting

Applications :Machine controls, Packaging, Palletizing, Material handling, similarSequential task as well as Process control

PLC

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The Ladder Diagram (LD)programming language originatedfrom the graphical representationused to design an electrical controlsystem

Finally CPUs were added to take overthe function of the logic circuitso Control decisions accomplished

through programming

Ladder diagram ( LD) was developedto make program creation andmaintenance easiero

Computer based graphicalrepresentation of wiring diagramsthat was easy to understand

o Reduced training and support cost

ANDOR

CPU

Ladder Diagram

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What is Rung?

A rung of ladder diagram code can contain both input and outputinstructionso Input instructions perform a comparison or test and set the rung state based

on the outcome

Normally left justified on the rungo Output instructions examine the rung state and execute some operation or

function

In some cases output instructions can set the rung state Normally right justified on the rung

Input Instruction Output Instruction

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PLC Cycle

Outputs

Machineor

Process

Programmabl

econtroller

Inputs

Sense the Input Process the Logic Give Output

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Programming of PLC

Start Stop the Motor

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The PLC is programmed interface between the field I/p elementlike limit switches, sensors, push button and the final controlelements like actuator, solenoid/control valves, drives, hootersetc

CPU

Power SupplyI/O Modules

Configuration of PLC : Allen Bradley

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Today: Distributed I/O Modules

DistributedI/O modules

PLC

Distributed I/O scanner

Data Communication Bus

PLC Architecture Evolution

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PLC Signal Flow

Programming Terminal

O:0/7

O:0/7

O:1/5

OutputDevices

OutputModules

ProcessorMemory

Input Module

InputDevices

LadderProgram

O:0/7

O:1/5

I:0/6

I:1/4

O:1/5

I:0/6

I:1/4

I:0/6

I:1/4

DataInputImage Table

OutputImage Table

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PLC Types

Nano (Small) Micro (Medium) Large

Basic criteria forPLC Types Memory Capacity I/O Range Packaging and Cost perPoint

Programmable Logic Controllers

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PLC Systems of various vendors

Siemens S5 -110U, 115U, 135U S7 - 200, 300, 400

Allen Bradley Micrologix 1000, 1200, 1500 SLC 5/01, 5/02, 5/03

PLC 5/10, 5/25 and 5/40Modicon

Nano Micro Premium Quantum

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Supervisory control & Data Acquisition (SCADA)

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Supervisory Controland

Data Acquisition

SCADA refers to a system that collects data from varioussensors at a factory, plant or in other remote locations and thensends this data to a central computer which then manages andcontrols the data.

SCADA focuses on gathering and circulating the right amount ofsystem information to the right person or computer within theright amount of time.

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Data Server

SCADA

SupervisoryControl

And DataAcquisition

Graphics and Batch processingArchiving, Logging,Access Control, Alarms

Distributed database

PLCs

Field Bus

Data Server

Control Programs

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Features of typical SCADA software Dynamic process graphic

Real-time and Historical trending Alarms Recipe Management Security Device connectivity Database connectivity

Supervisory Control & Data AcquisitionSoftware

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Application of SCADA system

Water Management Systems. Electric Power. Traffic Signals. Mass Transit Systems. Environmental Control Systems. Manufacturing Systems. Transmission, Generation, Distribution system.

Mining plants, water and electrical utility installations to oil gas plants.

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SCADA in Industries

Sr no. Vender SACDA Software

1. Wonder ware In Touch 5.0 to 10.0

2. Siemens Ltd. Win CC/ Wincc Flexble

3. Allen Bradley Rs View

4. Intellution Fix DMACS

5. Schneider Factory View & CITEC

6. KIPT ASTRA ( Indian SCADA)

7. Merz Aspic

8 GE Fanuc Cimplicity

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