Description Of Specific Functions 127
V560 Series High Performance Closed-Loop Vector Inverter User Manual
7.8 V/F PARAMETERS AND OVERLOAD PROTECTION (MOTOR 1)
(GROUP F1.2)
F1.2.15 Reference frequency
of motor 1
Setting range: 5.00~300.00Hz Factory default: 50.00
F1.2.16 Reference voltage of
motor 1
Setting range: 50~500V Factory default: 380/220
The reference frequency means the minimum frequency when the inverter outputs the maximum voltage,
and generally is rated frequency of the motor.
The reference voltage means the output voltage when the inverter outputs the reference frequency, and
generally is rated voltage of the motor.
This group of parameters is set according to the motor’s parameters, and do no need to be modified except
for special circumstances.
F1.2.17 V/F curve selection
for motor1
Setting range: 0, 1, 2, 3 Factory default: 0
Set the corresponding curve between the inverter output voltage and output frequency. See the following
figure.
0: Customized curve
When this mode is selected, users can set any desired V/F curve via this group of parameters (Group F1.2).
1: 1.2 times squares curve
The outputted is 1.2 times-square descending torque characteristics curve. See the curve 1 in the figure.
It is suitable for torque load of fans and pumps.
2: 1.5 times squares curve
The outputted is 1.5 times-square descending torque characteristics curve. See the curve 2 in the figure. It is
suitable for torque load of fans and pumps. The energy saving effect of the descending torque curve is
slightly increased compared with the constant torque curve.
3: Second square curve
The outputted is 2.5 times-square descending torque characteristics curve. See the curve 3 in the figure. It is
suitable for torque load of fans and pumps. If it is not steady during light load operation, please switch to 1.5
times-square curve for operation.
Figure 7-26 V/F curve
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