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DC motor dynamic braking circuit

2016-09-04 16:52  
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DC motor dynamic braking circuit
When it is braking, pressing the stop button STP will make DC contactor KM be de-energized, the normally closed contact KM restores the closed state, so that the the voltage relay KV coil gets electric and moves, and its normally open contact KV is closed, then DC contactor KMB gets electric operation, the braking resistor R and armature M are connected in parallel. Excitation current direction has not changed, the torque generated by motor is the braking torque, so that the motor is rapidly stopped.