Section V. Parameter Function Table
46
5.5 V/F control group
：
F3.00-F3.15
This function group is only valid for V/F control mode.
V/F control is suitable for general load such as draught fan, pump. It is also appropriate for
situations where one inverter driving multiple motors or there is big difference between inverter
power and motor power.
Code
Description/Display
Setting Range
Factory
Setting
Change
Limite
F3.00
V/F curve setup
Beeline V/F
0
0
★
Multi-point V/F
1
Square V/F
2
Power of 1.2 V/F
3
Power of 1.4 V/F
4
Power of 1.6 V/F
6
Power of 1.8 V/F
8
Reserved
9
VF complete separation mode
10
VF semi separation mode
11
This parameter defines the V/F setup mode so as to meet the requirements of various load
characteristics.
0
：
Beeline V/F
It is suitable for the ordinary constant torque load.
1
：
Multi-point V/F
It is suitable for special loads such as dehydrator and centrifugal machine. It can be self-defined.
Refer to the description of functional codes of Group F1-07 to F1-12 for details.
2
：
Square V/F
It is suitable for centrifugal loads such as fan and pump.
3~8
：
These are relation curve situated between beeline V/F curve and square V/F curve.
9
：
Reserved
10
：
VF complete separation mode
Inverter output frequency and output voltage are mutually independent. Output frequency is
decided by frequency source,while output voltage is decided by F3.13(VF separation voltage source).
VF complete separation mode is generally applied in induction heating, inverter power supply,
torque motor control fields etc.
11
：
VF semi separation mode
In this case, V is proportional to F. Proportional relationship can be set by the voltage source
F3.13. The relationship between V&F is connected with F1 group(motor rated voltage and rated
frequency).
Suppose that voltage source input is X (X from 0~100%), the V,F relationship is
：
V/F=2*X*(Motor rated voltage)/(Motor rated frequency)
F3.01 Torque boost value
0.0%~30%
-
★
F3.02 Torque boost cut-off frequency 0.00~Maximum frequency
50.00Hz
★
