Three-phase motor braking circuit 2

Published:2011/7/8 22:48:00 Author:Lucas | Keyword: Three-phase , motor braking | From:SeekIC

When braking, you should press the stop button STP, then AC contactor KMF (or KMR, KMF is forward contactor, KMR is the reverse contactor, 1SA, 2SA are the trip switches) loses power and releases, the motor M leaves from the AC power supply, and the normally closed contact KMF or KMR restores closed state, and KM coil gets electric and pulls in, and the main contacts close, then AC is added to the M stator windings by the main contact of KM and rectified into DC by the rectifier diodes VD1, VD2 to make motor brake quickly. At this time, due to KMF's (or KMR) normally open auxiliary contact is disconnected, the time relay KT coil is energized.



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