DC motor dynamic braking circuit

Posted on Dec 11, 2010

DC motor is shown in dynamic braking circuit. Braking, press the stop button SB2, the contactor KM1 missing, and released its movable contact connected off, electrical voltage

DC motor dynamic braking circuit
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relay KV eligible actions, which make contacts closed, the electric brake contactor KM2 eligible action will braking resistor R is connected in parallel at both ends of the armature, then changed direction due to the excitation current, the torque produced by the motor brake torque, the motor stops quickly. When the armature back EMF voltage is lower than the release voltage relay KV, KV release, so KM2 missing, and released the end of the braking process.

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