Automatic reversing circuit of the phase-electromotor with the inching switch

Published:2011/9/2 2:28:00 Author:Christina | Keyword: Automatic reversing circuit, phase-electromotor, inching switch | From:SeekIC

As the figure shows, the SA1 and SA2 are the position limit switches; the SB1 and SB2 are the inching switch. Set the SB1 as an example, it is a composite switch, you can start the KMF by pressing it, the electromotor operates positively, if you unclasp the finger, the KMF will loss power, so the electromotor is in the inching state. After you press the STF, the normally closed contact point of SB1 is in the closed state, so the KMF can protect itself, the electromotor can operate long-standing. Set the SA1 as an example, in the normal operation condition, after the mechanical hits the inching switch SA1, the normally closed contact point cuts off to cut off the KMF return circuit, the electromotor stops.



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