Siemens Sinamics S120 Function Manual page 268

Basic functions
6.13 Technology function: friction characteristic
Function diagrams (see SINAMICS S120/S150 List Manual)
● 5610 Torque limiting/reduction/interpolator
● 6710 Current setpoint filters
● 7010 Friction characteristic curve
Overview of important parameters (see SINAMICS S120/S150 List Manual)
● p3820 Friction characteristic curve value n0
● ...
● p3839 Friction characteristic curve value M9
● r3840 CO/BO: Friction characteristic curve status
● r3841 CO: Friction characteristic curve output
● p3842 Friction characteristic curve activation
● p3845 Friction characteristic curve record activation
Commissioning via parameters
In p382x, speeds for the measurement are predefined as a function of the maximum speed
p1082 during first commissioning. They can be changed appropriately.
The automatic friction characteristic plot can be activated using p3845. The characteristic is
then plotted the next time that it is enabled.
The following settings are possible:
● p3845 = 0 Friction characteristic curve recording deactivated
● p3845 = 1 Friction characteristic curve recording activated, all directions of rotation
● p3845 = 2 Friction characteristic curve recording activated, positive direction of rotation
● p3845 = 3 Friction characteristic curve recording activated, negative direction of rotation
Commissioning via STARTER
In STARTER, the friction characteristic curve can be started up via the dialog under
"Functions".
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The friction characteristic curve is recorded in both directions of rotation. The results of
the positive and negative measurement are averaged and entered in p383x.
DANGER
When the friction characteristic is plotted, the drive can cause the motor to move. As a
result, the motor may reach maximum speed.
The Emergency Off functions must be fully operational during commissioning. To protect
the machines and personnel, the relevant safety regulations must be observed.
Function Manual, (FH1), 01/2012, 6SL3097-4AB00-0BP2
Drive functions