Detailed Function Description
61
Figure 6.12 V/F curve setting diagram.
Function
Code
Name Description
Setting
Range
Factory
Setting
P4.09
V/F slip
compensation
0.00~10.00Hz 0.00~10.00 0.0Hz
The motor’s slip changes with the load torque, which results in the variance of motor
speed. The inverter’s output frequency can be adjusted automatically through slip
compensation according to the load torque. Therefore the change of speed due to the
load change can be reduced. The value of compensated slip is dependent on the motor’s
rated slip which can be calculated as below:
4.09 * /60
b
PfnP=−
Where
b
is motor rated frequency (P2.01),
n
is motor rated speed (P2.02),
and
P is pole pairs of motor.
Function
Code
Name Description
Setting
Range
Factory
Setting
P4.10 AVR function
0: Disabled
1: Enabled all the time
2: Disabled during
deceleration
0~2 1
AVR ( Auto Voltage Regulation) function ensure the output voltage of inverter stable no
matter how the DC bus voltage changes. During deceleration, if AVR function is disabled,
the deceleration time will be short but the current will be big. If AVR function is enabled
all the time, the deceleration time will be long but the current will be small.
Function
Code
Name Description
Setting
Range
Factory
Setting
P4.11
Auto energy
saving selection
0: Disabled
1: Enabled
0~1 0
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