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0 Inenabled
Setup
range
1 Enabled
Group F3 V/F Control Parameters
This group of function code is enabled only for the V/F control (F0-01=2) and
is inenabled for the vector control.
V/F control is applicable to the general loads such as fan and pump or the
applications where one driver drives multiple motors or the driver power is
one level lower or higher than the motor power.
V/F curve setup Factory default value 0
0 Straight V/F curve
1 Multiple-point V/F curve
F3-00
Setup
range
2 Square V/F curve
The fan and pump loads may select square V/F control.
0: Straight V/F curve. It is suitable for common constant torque load.
1: Multiple-point V/F curve. It is suitable for the special loads such as
dehydrator and centrifugal machine.
2: Square V/F curve. It is suitable for the centrifugal loads such as fan and
pump.
Torque boost
Factory default
value
1.0%
F3-01
Setup range 0.0% ~ 30%
Cutoff frequency
of torque boost
Factory default
value
50.00Hz
F3-02
Setup range
0.00Hz~ maximum output
frequency
To compensate the low frequency torque characteristics of V/F control, it can
boost the output voltage of the driver at the time of low frequency.
If the torque boost is set to be too large, the motor may be over heat, and the
driver may be over current. In general, the torque boost shall not exceed
8.0%.
Adjusting this parameter effectively can avoid over current upon startup.
For the relatively large loads, it is recommended to increase this parameter.
For the small loads, this parameter value may be reduced.
When the torque boost is set to 0.0, the driver will adopt auto torque boost.
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