introduction to automation
DESCRIPTION
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Industrial Automation
Stepping Stone
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What is Automation ?
Automation is basically the delegation of human control function to technical equipment for
Increasing Productivity Increasing Quality
Reducing Cost Increasing Safety in working conditions
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Industrial Automation Components
Control Software
Control Hardware
Field Instruments
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Control Software
Control software example is “SCADA”
Supervisory Control And Data Acquisition
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SCADA Application
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Some of the Leading SCADA Software
Wonderware : InTouch Intellution : Fix DMACS
Merz : Aspic Allen Bradley : Rsview
Siemens : WinCC GE Fanuc : Cimplicity
KPIT : ASTRA
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Control Hardware
Standalone PID Controllers
Programmable logic controllers (PLC)
Distributed Control System
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Typical Installations using PID Controllers
Installation Example
RS-232
Controllers placed in field
RS-485 Bus
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Programmable Logic Controllers
Now a days PLCs are the most widely used control hardware in control applications
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
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Modicon PLC
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Siemens PLC
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Allen Bradley PLC
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Programming Languages in PLCs
Ladder Logic ( LAD/LD ) Structured Text ( ST) Instruction List ( IL )
Sequential Function Chart ( SFC ) Function Block Diagram ( FBD )
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Field Instruments
Examples :Sensors
TransducerMotorsDrives
SwitchesHMI
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SensorsRTD : Output in Ohms (Temperature)
Thermocouples : Output in mV (Temperature)
Pressure Transmitters : 4-20mA, 0-10 V …..
Flow Transmitter : 4-20mA, 0-10 V …..
Level Transmitter : 4-20mA, 0-10 V …..
Conductivity meter : 4-20mA, 0-10 V …..
Density meter : 4-20mA, 0-10 V …..
pH transmitter : 4-20mA, 0-10 V …..
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