Advanced commissioning
7.5 Motor holding brake
SIMATIC ET 200pro FC-2 converter
Operating Instructions, 04/2018, FW V4.7 SP10, A5E34257324B AF
111
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 inverter 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 briefly 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
different 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 off the motor.
9.
Check the behavior of the drive immediately after the motor has been switched off:
–
If the motor holding brake closes too late, the load briefly sags before the motor
holding brake closes.
Set a larger value for p1217.
–
If the motor waits too long before switching off after the motor holding brake has
closed, reduce p1217.
The "Motor holding brake" function has been commissioned.
❒
Table 7- 10 Setting the control logic of the motor holding brake
Parameter
Description
p1215 = 1
Enable motor holding brake
0 Motor holding brake locked (factory setting)
1 Motor holding brake just like the sequence control
2: Motor holding brake permanently open
3: Motor holding brake just like the sequential control, connected via BICO
p1216
Motor holding brake opening time (factory setting 0.1 s)
p1216 > braking signal relay ru brake release time
p1217
Motor holding brake closing time (factory setting 0.1 s)
p1217 > braking signal relay ru brake closing time
r0052.12
"Open motor holding brake" command