Activity

What is industrial Automation

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

Through Industrial automation we will do mass production with less manpower

Quality from the product is increased

Safety of person & equipment is increased

More accurate process control

Since human intervention is less so reliability in the system is higher

Systems operate is low energy, more electronic control so equipment life is higher

Changes in process logic becomes easier since logics are changed mostly through software

Principal Industrial Automation MNCs

L & T • ALSTOM

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 employed to control the task each and every step. Human intervention was there each and every step. Drawbacks were poor output, errors involved with 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 during the early 1920s. Automation was achieved by controlling air to pneumatic valves, which in turn were actually switched on/off by relays and switches. They were very bulky and changing of the logic was very complex procedure since a great deal of rework was required to accomplish alternation 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 chosen 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 within the control circuits. Electronic times & counters replaced mechanical timers & counters. Due to use of electronics space and requirements reduced, maintenance requirement reduced & systems were more reliable.