Three electromotors sequence-start reversed order stop circuit

Published:2011/8/30 20:28:00 Author:Christina | Keyword: Three electromotors, sequence-start, reversed order, stop circuit | From:SeekIC

Some technological processes need the three electromotors, the sequence-start order is M1, M2, M3, the reversed order is M3, M2, M1. In this circuit, the normally open contact point of KM1 is connected into the control loop of KM2; the normally open contact point is connected into the control loop of KM3, if the KM1 will not close, the electromotor M1 is not the first start one, so the electromotor M2 can not start; also the M3, this is the sequence start. The reason of the reversed order stop is that the normally open auxiliary contact point of KM3 is connected with the two ends of the stop button STP2, the normally open auxiliary contact point of KM2 is connected with the two ends of the stop button STP1.



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