6. Check the acceleration behavior of the drive immediately after the motor has been switched
on:
– If the motor holding brake opens too late, the converter will accelerate the motor
suddenly against the closed motor holding brake.
Set p1216 larger.
– If the motor waits too long before accelerating after the motor holding brake has opened,
reduce p1216.
For applications involving a pulling load, e.g. lifting gear/crane, if p1216 is too long, then
the load can briey sag/sink after the motor holding brake is opened. If you reduce p1216,
then the amount that the load sags/sinks is reduced.
7. If the load sags after switching on the motor, then you must increase the motor torque when
opening the motor holding brake. Depending on the control mode, you must set dierent
parameters:
– U/f control (p1300 = 0 to 3):
Increase p1310 in small steps.
Increase p1351 in small steps.
– Vector control (p1300 ≥ 20):
Increase p1475 in small steps.
8. Switch o the motor.
9. Check the behavior of the drive immediately after the motor has been switched o:
– If the motor holding brake closes too late, the load briey sags before the motor holding
brake closes.
Set a larger value for p1217.
– If the motor waits too long before switching o after the motor holding brake has closed,
reduce p1217.
The "Motor holding brake" function has been commissioned.
❒
Parameter
Table 8-40 Setting the control logic of the motor holding brake
Parameter Description Factory setting
r0052.0…15 CO/BO: Status word 1 -
p1215 Motor holding brake conguration 0
p1216 Motor holding brake opening time 100 ms
p1217 Motor holding brake closing time 100 ms
Table 8-41 Advanced settings
Parameter Description Factory setting
p0346[M] Motor excitation build-up time 0 s
p0855[C] BI: Unconditionally open holding brake 0
Advanced commissioning
8.12 Motor holding brake
Distributed converter for SIMOGEAR geared motors
Operating Instructions, 10/2020, FW V4.7 SP13, A5E31298649B AL 233
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