automation plc scada instrumentation drives & motors
TRANSCRIPT
AUTOMATION PLC SCADA INSTRUMENTATION DRIVES & MOTORS
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 .
Productivity
Quality Labour Cost
Plant
Total Automation Manufacturing Competitiveness Solution
Automation applied to plantAutomation applied to plantAutomation applied to plantAutomation applied to plant
Time
INDUSTRIAL AUTOMATIONINDUSTRIAL AUTOMATIONCOMPONENTSCOMPONENTS
INDUSTRIAL AUTOMATIONINDUSTRIAL AUTOMATIONCOMPONENTSCOMPONENTS
Automation : Typical installation . . .Automation : Typical installation . . . .Automation : Typical installation . . .Automation : Typical installation . . . .
Junction Box
Field Cabling
SCADA Software
Communication Cable
Field Cabling
AUTOMATION PLC SCADA INSTRUMENTATION DRIVES & MOTORS
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
Programming/
Communication Device
Central Processing Unit (CPU)
Input
Circuits
Output Circuits
Memory
program Data
Power supply
Optical isolation
Optical isolation
PLC systemPLC system
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.
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
• 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
• Too much work required in connecting wires.
• Difficulty with changes or replacements.
• Difficulty in finding errors; requiring skillful work force.
DISADVANTAGES