AUTOMATION PLC SCADA INSTRUMENTATION DRIVES & MOTORS.
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Transcript of AUTOMATION PLC SCADA INSTRUMENTATION DRIVES & MOTORS.
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AUTOMATION PLC SCADA INSTRUMENTATION DRIVES & MOTORS
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Making products under the control of computers and programmable controllers. Manufacturing assembly lines as well as stand-alone machine and robotic devices fall into this category.
Automation is delegation of human control functions to technical equipment .
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Productivity
Quality Labour Cost
Plant
Total Automation Manufacturing Competitiveness Solution
Automation applied to plantAutomation applied to plantAutomation applied to plantAutomation applied to plant
Time
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INDUSTRIAL AUTOMATIONINDUSTRIAL AUTOMATIONCOMPONENTSCOMPONENTS
INDUSTRIAL AUTOMATIONINDUSTRIAL AUTOMATIONCOMPONENTSCOMPONENTS
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Automation : Typical installation . . .Automation : Typical installation . . . .Automation : Typical installation . . .Automation : Typical installation . . . .
Junction Box
Field Cabling
SCADA Software
Communication Cable
Field Cabling
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AUTOMATION PLC SCADA INSTRUMENTATION DRIVES & MOTORS
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A PLC is a solid state / industrial computer that performs discrete or sequential logic in a factory environment.
The PLC is programmed interface between the field input elements like limit switches, sensors, push button and the final control elements like actuator, solenoid/control valves, drives, hooters etc.
PLC consist of :
Input ModuleCPU with Processor and Program memoryOutput moduleBus System Power Supply
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Programming/
Communication Device
Central Processing Unit (CPU)
Input
Circuits
Output Circuits
Memory
program Data
Power supply
Optical isolation
Optical isolation
PLC systemPLC system
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CPU
Power Supply I/O Modules
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Historical Background
The Hydramatic Division of the General Motors Corporation specified the design criteria for the first programmable controller in 1968
Their primary goal -
To eliminate the high costs associated with inflexible, relay-controlled systems.
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Programmable Controller DevelopmentProgrammable Controller Development
1968 - Programmable concept developed1969 - Hardware CPU controller, with logic instructions, 1 K of memory and 128 I/O points 1974 - Use of several (multi) processors within a PLC - timers and counters; arithmetic operations; 12 K of memory and 1024 I/O points1976 - Remote input/output systems introduced1977 - Microprocessors - based PLC introduced
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• Cost effective for controlling complex systems.• Flexible and can be reapplied to control other systems quickly
and easily.
• Computational abilities allow more sophisticated control.
• Trouble shooting aids make programming easier and reduce downtime.
• Reliable components make these likely to operate for years before failure.
ADVANTAGES
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• Too much work required in connecting wires.
• Difficulty with changes or replacements.
• Difficulty in finding errors; requiring skillful work force.
DISADVANTAGES
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