VD500 Series Inverter User Manual Parameter Description
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F4-10
VF Slip Compensation Gain
0.0%~200.0%
20.0%
◎
This parameter is only effective for asynchronous motor.
V/F slip compensation gain: can compensate asynchronous motor caused motor speed deviation
when the load increases, to make the speed of the motor can basically remained stable when the load
changes.
V/F slip compensation gain is set to 100.0%, says the slip of compensation for the rated motor slip
when the motor with rated load, and rated motor slip is by the inverter through F2 group rated motor
frequency and rated speed to calculate gain.
Adjust the V/F slip compensation gain, general when under rated load, motor speed and the target
speed basically the same as the principle. When the motor speed and the target value is not at the
same time, need appropriate fine-turning the gain.
F4-11
VF Oscillation
Suppression Mode
0: Mode 0
1: Mode 1
0
◎
F4-12
VF Oscillation
Suppression Gain
0~100
Model
dependent
○
F4-13
Maximum Overshoot of
VF Oscillation
Suppression
0~1000
200
○
The selection method of the gain is as far as possible on the premise of effectively restrain oscillation
in small, in order to avoid an adverse effect on operation of V/F.
Please select the gain is 0 when motor no oscillation phenomenon. Only in the obvious oscillation of
the motor, should be appropriate to increase the gain and the greater the gain, the more obvious the
suppression of the oscillation.
When using suppression oscillation function, wants the rated motor current and no-load current
parameters accurately, otherwise the V/F oscillation suppression effect is not good.
F4-14
The Separation of VF
Voltage Source
0: Digital setting (F4-15)
1: AI1
2: AI2
3: AI3 (expansion card)
4: PULSE setting
5: MS instruction
6: Simple PLC
7: PID
8: Communication given
Remark: 100% corresponding rated
motor voltage
0
○
F4-15
VF Separation Voltage
Digital Setting
0V~rated motor voltage
0V
○
V/F separation is commonly used in these occasions such as induction heating, inverter power supply
and torque motor control.
When choosing V/F separation control, output voltage can be through the function code F4-15 set,
also can come from the analog quantity, MS instruction, PLC, PID or communication given. When
using the non-numeric set, 100% corresponding rated motor voltage, when the percentage of the
analog output setting such as negative, is to set by absolute value as a valid value.
0: Digital setting (F4-15)
The voltage set directly by the F4-15.
