GEH-6385 Reference and Troubleshooting, 2300 V Drives Chapter 3 Paramters/Functions
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Speed/Torque Control Functions

Droop

The Droop function adjusts th e speed reference to compensat e for the difference
between the desired and actual load torque.
Function inputs
The following table specifies the input parameters of the Droop function .
Parameter Description
Droop comp ref sel Selects the load torque compensation. Per unit torque
The following table specifies the input variables of the Droop function.
Variable Description
Droop feedback Averaged, normalized, and filtered version of the actual
torque reference (Torque ref post lim). Per unit torque
Function outputs
The following table specifies the output variables of the Droop function.
Variable Description
Droop output Speed reference adjustment. RPM
Function configuration
The following table specifies the configuration parameters of the Droop function.
Parameter Description
Droop feedback fil Feedback filter bandwidth. Radians/second
Droop deadband, neg Negative deadband level. Per unit torque
Droop deadband, pos Positive deadband level. Per unit torque
Droop gain Scale factor that specifies speed droop for 1 pu torque.
Per unit speed / Per unit torque
Droop disable sel Selects a signal that can disable the droop function
output.
Related diagrams
Droop (Droop)