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Yates Weaver posted an update 1 year, 11 months ago
What is industrial Automation
Industrial Automation is really a technique through which we make give over human control to machines. In industrial automation machines are programmed to accomplish the tasks which people employed to achieve. Why it is done? Because of Programmable controller :
Through Industrial automation we could do mass production with less manpower
Quality with the technique is increased
Safety of person & products are increased
More accurate process control
Since human intervention is less so reliability from the system is higher
Systems operate is low power supply, more electronic control so equipment every day 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 method at every step. Human intervention was there at every step. Drawbacks were poor 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 in early 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 great deal of rework was forced to accomplish difference 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 utilised for achieving desired industrial automation. But these systems also resulted into bulky panels. A lot of wiring was involved so time taken to complete task was higher. Defect investigation & troubleshooting was complex.
Electronic Control using Logic Gates: In early 60s electronics dominated the process, electronic logic gates were utilised for achieving logical operations. they replaced switching devices like relays and contactors inside 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.