Basic functions 6.10 Technology function: friction characteristic

6.10Technology 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 coordinates of an interpolation point are described by a speed (p382x) and a torque parameter (p383x) (interpolation point 1 = p3820 and p3830).

Features

10 interpolation points are available for mapping the friction characteristic curve.

An automatic function allows you to record the friction characteristic curve (record friction characteristic curve).

A connector output (r3841) can be applied as friction torque (p1569).

The friction characteristic can be activated and deactivated (p3842).

Function diagrams (see SINAMICS S List Manual)

5610 Torque limiting/reduction/interpolator

6710 Current setpoint filters

7010 Friction characteristic curve

Overview of key parameters (see SINAMICS S 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 initial 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

Drive Functions

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Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4

Page 199
Image 199
Efficient Networks S120 manual Technology function friction characteristic, Commissioning via parameters