LEESON SCR Thyristor Motor Control - Manual (Page 39)

33 Operation SPEEDMASTER™ OPERATION MANUAL
Dynamic braking may be used to rapidly stop a motor
(Figure 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
INHIBIT
MOTOR
A2 A1
RUN
BRAKE
DYNAMIC BRAKE
RESISTOR
Figure 17. Dynamic Brake Connection
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.
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