Technology Function: Friction Characteristic - Siemens SINAMICS S120 Function Manual

4.9

Technology function: friction characteristic

Description
The friction characteristic curve is used to compensate the friction torque for the
motor and the driven machine. A friction characteristic enables the speed controller
to be pre-controlled and improves the response.
10 interpolation points are used for each friction characteristic curve. The coordina-
tes of an interpolation point are described by a speed (p382x) and a torque para-
meter (p383x) (interpolation point 1 = p3820 and p3830).
Features
S 10 interpolation points are available for mapping the friction characteristic curve.
S An automatic function allows you to record the friction characteristic curve
(record friction characteristic curve).
S A connector output (r3841) can be applied as friction torque (p1569).
S The friction characteristic can be activated and deactivated (p3842).
Overview of important parameters (refer to the List Manual)
S p3820
S ...
S p3839
S r3840
S r3841
S p3842
S p3845
Function diagrams (refer to the List Manual)
S 5610
S 6710
S 7010
© Siemens AG 2006 All Rights Reserved
SINAMICS S120 Function Manual, 03/2006 Edition
Technology function: friction characteristic
Friction characteristic curve value n0
Friction characteristic curve value M9
CO/BO: friction characteristic curve status
CO: friction characteristic curve output
Friction characteristic curve activation
Friction characteristic curve record activation
Torque limitation/reduction/interpolator
Current setpoint filter
Friction characteristic
Extended Functions
4-205