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What is Industrial Automation & How it Evolved

  • What is industrial Automation

    Industrial Automation is really a technique through which we make hand over human control to machines. In my site are designed to accomplish the tasks which humans employed to achieve. Why it is done? Because of its advantages:

    Through Industrial automation we are able to do mass production with less manpower
    Quality in the technique is increased
    Safety of individual & devices are increased
    More accurate process control
    Since human intervention is less so reliability in the system is higher
    Systems operate is low power supply, 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 accustomed to control the task at every step. Human intervention was there at each 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 with 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 from the logic was very complex procedure since a lot of rework was forced to accomplish change in logic. So time taken up 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 taken up 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 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 usage of electronics space and energy requirements reduced, maintenance requirement reduced & systems were more reliable.

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