Droop Control Function - Omron VARISPEED F7 User Manual

Droop Control Function

Droop control is a function that allows to achieve a load sharing between two motors that drive a single load.
The Droop Control function must be enabled at one inverter only. If by this inverter the torque rises, the speed
is reduced and the other inverter takes over more load. Thereby the load is shared automatically to both
motors.
Related Parameters
Parameter
No.
b7-01
b7-02
Setting the Droop Control Gain
Set the Droop Control gain in parameter b7-01 to the amount of speed reduction when the maximum output
frequency is input and the rated torque is generated (see
output voltage.
6
Droop Control can be disabled by setting the parameter b5-07 to 0.
Setting the Droop Control Delay Time
The Droop Control delay time in parameter b7-02 is used to adjust the responsiveness of droop control.
Increase this setting if oscillations or hunting occur.
128
6-
Name
Droop Control gain
Droop Control delay time
Torque
0
Fig 6.89 Droop Control Gain
Change
Factory during
Setting Opera-
tion
0.0 Yes
0.05 s No
Fig 6.89). b7-01 is set as percentage of the maximum
b7-01
100%
Speed
Speed reference
Control Methods
Open Closed
V/f with
V/f Loop Loop
PG
Vector Vector
No No No A
No No No A