Siemens SINAMICS G220 - Friction Characteristic

Number Name Unit
p0346[0...n] Motor excitation build-up time [s]
p0347[0...n] Motor de-excitation time [s]
p1200[0...n] Flying restart operating mode 
c1201[0...n] Flying restart enable 
p1202[0...n] Flying restart search current [%]
p1203[0...n] Flying restart search rate factor [%]
p1270[0...n].0...3 Flying restart con󹪝guration 
14.11.14 Friction characteristic
Overview
In many applications the friction torque of the load is not negligible.
With an activated friction characteristic, the converter precontrols the speed controller with
the friction torque. The precontrol reduces overshooting of the speed after speed changes.
Requirement
The friction characteristic is recorded.
The friction characteristic is activated: p3842=1.
Description of function
The friction torque r3841 speci󹪝es a torque setpoint that bypasses the speed controller.
4QFFETFUQPJOU
'SJDUJPOBMUPSRVF
5PSRVF
TFUQPJOU
4QFFEDPOUSPMMFS
4QFFEBDUVBMWBMVF

,
1
5
/
Figure14-198 Precontrol of the speed controller with the friction torque
The converter calculates the current friction torque from a friction characteristic with 10
interpolation points.
Functions
14.11Drive functions
SINAMICS G220 converter
Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB 613