16 Operation
MM21211A
MM21211A drives have built-in dynamic braking, which is
activated when the RUN/BRAKE switch is set to BRAKE.
Warning
Wait for the motor to completely stop before switching it
back to RUN. This will prevent high armature currents from
damaging the motor or drive.
NOTE: For motors rated 1/17 horsepower and lower, a
brake resistor is not necessary since the armature resistance
is high enough to stop the motor without demagnetization.
Replace the dynamic brake with 12 gauge wire.
m
MM21111A
Dynamic braking may be used to rapidly stop a motor
(Figure 4, page 17). For the RUN/BRAKE switch, use a double-
pole, double-throw switch rated for at least the maximum DC
armature voltage and maximum braking current.
Dynamic braking
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