Siemens SINAMICS S120 Function Manual page 231

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This method is only suitable to a limited extent for drives that are accelerated and braked with

significant changes in speed.

The droop feedback is used, for example, in applications in which two or more motors are

connected mechanically or operate with a common shaft and fulfill the above requirements. It

limits the torque differences that can occur as a result of the mechanical coupling by

appropriately modifying the speeds of the individual motors. The drive is relieved when the

torque is too large.

Function diagrams (see SINAMICS S120/S150 List Manual)

Overview of important parameters (see SINAMICS S120/S150 List Manual)

● p1488[0...n]

● p1489[0...n]

● p1492[0...n]

Drive functions

Function Manual, 06/2019, 6SL3097-5AB00-0BP2

Vector control - Speed setpoint, droop

CO: Torque setpoint

CO: Speed controller I torque output

Droop input source

Droop feedback scaling

CO: Droop feedback speed reduction

BI: Droop feedback enable

CO: Torque setpoint before supplementary torque

Vector control