Siemens SINAMICS G220 - Recording a Friction Characteristic




















TQFFEGSJDUJPOBMUPSRVF
4QFFEJOSQN
'SJDUJPOBMUPSRVFJO
/N
QQ
QQ
QQ
QQ
QQ
QQ
QQ
QQ
QQ
QQ
Figure14-199 Friction characteristic
The interpolation points of the friction characteristic are de󹪝ned for positive speeds. In the
negative direction of rotation, the converter uses the interpolation points with negative sign.
14.11.15 Recording a friction characteristic
Overview
On request, the converter records the friction characteristic. The converter accelerates the
motor step by step to the rated speed, measures the friction torque and writes the friction torque
to the interpolation points of the friction characteristic.
Requirement
The motor is permitted to accelerate up to the rated speed without endangering persons or
property.
You have completed quick commissioning.
You have set the vector control.
Procedure
Proceed as follows to record the friction characteristic:
1. Set p3845to a value of your choice:
– 1: Record the friction characteristic in both directions of the motor.
– 2: Record the friction characteristic in the positive direction of the motor.
– 3: Record the friction characteristic in the negative direction of the motor.
– 9: Calculate speeds for the friction characteristic.
2. Switch on the motor (ON/OFF1=1).
Functions
14.11Drive functions
SINAMICS G220 converter
614 Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB