Function description
If you use sensorless vector control with a pulling load, then the following settings are required:
• Set the following parameters:
• When opening the motor holding brake, enter a speed setpoint>0.
For speed setpoint = 0, and with the motor holding brake open, the load drops because the
induction motor rotates with the slip frequency as a result of the pulling load.
• Set the ramp-up and ramp-down times≤10s in the ramp-function generator.
• If, in quick commissioning, you have selected application class Dynamic Drive Control then
set p0502=1 (technological application: dynamic starting or reversing).
Parameter
Parameter Description Factory setting
p1610[D] Torque setpoint static (without encoder) 50%
p1750[D] Motor model conguration 0000 0000 0000
1100 bin
Advanced commissioning
8.20Motor control
SINAMICS G120C Converters
Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK 315
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