Siemens SIMATIC ET 200pro Original Instructions Manual page 152

Setting functions
8.7 Application-specific functions
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 operation (p1300 = 0 to 3):
– Vector control (p1300 ≥ 20):
8. Switch off the motor.
9. Check the braking behavior of the drive immediately after the motor has been switched
off:
– If the brake closes too late, the load briefly sags before the brake closes.
– After closing the brake, if the motor waits too long before it switches off the motor,
You have commissioned the "Motor holding brake" function.
Table 8- 17
Parameter
p1215 = 1
p1216
p1217
r0052.12
Table 8- 18
Parameter
p0346
p0855
p0858
p1226
p1227
p1228
152
Increase p1310 step-by-step.
Increase p1351 step-by-step.
Increase p1475 in small steps.
In this case, increase the closing time p1217.
then reduce the closing time p1217.
Setting the control logic of the motor holding brake
Description
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
Motor holding brake opening time (factory setting 0.1 s)
p1216 > braking signal relay runtimes + brake release time
Motor holding brake closing time (factory setting 0.1 s)
p1217 > braking signal relay runtimes + brake closing time
"Open motor holding brake" command
Advanced settings
Description
Magnetizing time (factory setting 0 s)
During this time the induction motor is magnetized. The inverter calculates this pa-
rameter using p0340 = 1 or 3.
Open motor holding brake (imperative) (factory setting 0)
Close motor holding brake (imperative) (factory setting 0)
Stationary state detection speed threshold (factory setting 20 rpm)
When braking with OFF1 or OFF3, when the speed falls below this threshold, stand-
still is detected and the monitoring time p1227 or p1228 is started
Stationary state detection monitoring time (factory setting 300 s)
Pulse deletion delay time (factory setting 0.01 s)
SIMATIC ET 200pro FC-2 converter
Operating Instructions, 04/2015, FW V4.7.3, A5E34257324B AB