NE200/300 Series Drive User Manual
Chapter 6 Parameter description 133
F4.09 Slip compensation coefficient
Range: 0.0~200.0%【0.0%】
F4.10 Slip compensation filtering
time
Range: 0.01～2.55s【0.20s】
Setting the parameters can compensate the motor rotation slip due to
change of load torque in the V/F control. With this compensation, the drive
regulates the output frequency according to the change of load torque and
thus increases the motor mechanical performance.
Synchronous
speed
n
T
Freq. after
compensation
Compensation Freq.
∆
f
Load torque
Fig.6-11 Auto slip compensation
In rated torque state, the value of slip compensation is: Slip
compensation gain (F4.09) × Rated slip (Synchronous speed- Rated speed)
Motoring state: Increase the gain of slip compensation (F4.09) gradually
when the actual speed is lower than the reference speed.
Generating state: Increase the gain of slip compensation (F4.09))
gradually when the actual speed is higher than the reference speed.
Note:
The value of automatic slip compensation is related to the motor’s
rated slip; therefore, the motor rated speed (F5.04) must be set
correctly.
Slip compensation is disabled when Slip compensation coefficient
is set to “0”.
F4.11 V/F separation control voltage Range: 0~5【0】
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