Explanation of time relay control inching and self-locking circuit

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Time relay control inching and self-locking circuit

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Today we will learn how to use the time relay control circuit to realize the inching and self-locking circuit

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First, after turning on the power

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The power failure delay action time relay KT, the coil is energized.

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Time relay KT, normally closed contact opens immediately.

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At this time, press and hold the start button SB2 and the contactor KM coil will be energized.

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When the start button SB2 is pressed for a time longer than the delay time set by the time relay KT.

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The power-off delay time relay KT closes the normally closed contacts after a delay action, forming a self-locking state.

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If you want to achieve inching, just press the start button SB2 for a time that does not exceed the delay action time of the delay time relay KT.


Reference address:Explanation of time relay control inching and self-locking circuit

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