scada

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www.sofcononline.com

Sushant Kumar7th Sem

Electrical 4th Year

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Productivity

QualityLabor Cost

Plant

Total Automation Manufacturing Competitiveness Solution

What is Automation ?

Automation is basically the delegation of human control function 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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PROGRAMMABLE LOGIC

CONTROLLER

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What is PLC ? Advantages of PLC Reliability in operation, Small physical size, Shorter project time,

Speed in Operation, Ease of maintenance/Troubleshooting

Applications : Machine controls, Packaging, Palletizing, Material handling, similar

Sequential task as well as Process control

PLC

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• The Ladder Diagram (LD) programming language originated from the graphical representation used to design an electrical control system

• Finally CPUs were added to take over the function of the logic circuits

• Control decisions accomplished through programming

• Ladder diagram ( LD) was developed to make program creation and maintenance easier

• Computer based graphical representation of wiring diagrams that was easy to understand

• 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 output instructions

– Input instructions perform a comparison or test and set the rung state based on the outcome

• Normally left justified on the rung– 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

Programmablecontroller

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 element like limit switches, sensors, push button and the final control elements like actuator, solenoid/control valves, drives, hooters etc

CPU

Power Supply I/O Modules

Configuration of PLC : Allen Bradley

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Today : Distributed I/O Modules

Distributed I/O modules

PLC

Distributed I/O scanner

Data Communication Bus

• PLC Architecture EvolutionPLC Architecture Evolution

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PLC Signal Flow

Programming Terminal

O:0/7

O:0/7

O:1/5

Output Devices

Output Modules

Processor MemoryInput Module

Input DevicesLadder Program

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

Data InputImage Table

OutputImage Table

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PLC Types

Nano (Small) Micro (Medium) Large

Basic criteria for PLC Types

Memory Capacity I/O Range Packaging and Cost per Point

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 5/40

Modicon Nano Micro Premium Quantum

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Supervisory control & Data Acquisition (SCADA)

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Supervisory Control and

Data Acquisition

SCADA refers to a system that collects data from various sensors at a factory, plant or in other remote locations and then sends this data to a central computer which then manages and controls the data.

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

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Data Server

SCADA

SupervisoryControl

And DataAcquisition

Graphics and Batch processingArchiving, Logging, Access Control, Alarms

Distributed database

PLC’s

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 Acquisition Software

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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 IndustriesSCADA 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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scada

Documents

supervisory control

ladder diagram

rung state

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data

programming

function

time