Siemens SINAMICS G220 - Droop

14.10.5.3 Droop
Overview
In the case of mechanically coupled drives, there is the risk that the drives operate "against each
other": Small deviations in the speed setpoint or actual value of the coupled drives can cause the
drives to be operated with signi󹪝cantly di󹪜erent torques. The droop connection provides a
remedy.
Requirement
You selected the "Speed control" control mode.
When droop is active, you have set the ramp-function generators of all the coupled drives
with identical ramp-up and ramp-down times and roundings.
Description of function
The droop connection ensures even torque distribution between several mechanically coupled
drives.
The droop reduces the speed setpoint as a function of the torque setpoint.
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Figure14-117 E󹪜ect of droop in the speed controller
Parameters
The following list contains the parameters of the "Droop" function.
Number Name Unit
r1482 Speed controller I torque output [Nm]
p1488[0...n] Droop input selection 
p1489[0...n] Droop feedback scaling 
r1490 Droop feedback speed reduction [rpm]
c1492[0...n] Droop feedback enable 
Functions
14.10Closed-loop drive control
SINAMICS G220 converter
Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB 511