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What is Industrial Automation & How it Evolved
What is industrial Automation

Industrial Automation is really a technique where we make give over human control to machines. In industrial automation machines are programmed to accomplish the tasks which humans employed to achieve. Why it is done? Because of its advantages:

Through Industrial automation we could do mass production with less manpower
Quality with the product is increased
Safety of person & products are increased
More accurate process control
Since human intervention is less so reliability with the system is higher
Systems operate is low power supply, more electronic control so equipment life's higher
Changes in process logic becomes easier since logics are changed mostly through software

Principal Industrial Automation MNCs


Schneider • FESTO

Siemens • Fuji Electric

Allen Bradley • Toshiba

Messung • TATA Honeywell

Modicon • Omron

Mitsubishi • Fanuc

Asia Automation • Delta

How industrial automation control system Evolved?

Initially automation was achieved through manual control, operators utilized to control the process each and every step. Human intervention was there at each and every step. Drawbacks were inferior output, errors involved in human involvement affected compromised safety, wastage of raw material, and accuracy of human action.

Then came Pneumatic Control: Industrial automation in this era was achieved through invention of pneumatic controllers noisy . 1920s. Automation was achieved by controlling air to pneumatic valves, which were actually switched on/off by relays and switches. They were very bulky and changing in the logic was very complex procedure since a lot of rework was required to accomplish change in logic. So time come to complete task changes was very high

Hard wired logic control: contactors, relays (for switching), timers and counters (for timing and counting) were used for achieving desired industrial automation. But these systems also resulted into bulky panels. A lot of wiring was involved so time delivered to complete task was higher. Defect investigation & troubleshooting was complex.

Electronic Control using Logic Gates: In early 60s electronics dominated the method, electronic logic gates were used for achieving logical operations. they replaced switching devices like relays and contactors inside the control circuits. Electronic times & counters replaced mechanical timers & counters. Due to use of electronics space and energy requirements reduced, maintenance requirement reduced & systems were more reliable.
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