AUTOMATION PLC SCADA INSTRUMENTATION DRIVES & MOTORS.

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

11

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