Droop control
In a system in which two or more motors drive single machinery, any speed gap between inverter-driven motors
results in some load unbalance between motors. Droop control allows each inverter to drive the motor with the
speed droop characteristic for increasing its load, eliminating such kind of load unbalance.
• Data setting range: -60.0 to 0.0 (Hz), (0.0: Disable)
■ Select droop control – “DROOP” (E01 to E05, data = 76)
The terminal command “DROOP” toggles droop control on and off.
The terminal command “DROOP” Droop control
ON Enable
OFF Disable
To use droop control, be sure to auto-tune the inverter for the motor.
Under V/f control, to prevent the inverter from tripping even at an abrupt change in load, droop control
applies the acceleration/deceleration time to the frequency obtained as a result of droop control. This
may delay reflection of the frequency compensated during droop control on the motor speed, thereby
running the inverter as if droop control is disabled.
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