SV600 Series User Manual 7 Parameter Description
89
Function
code
Name
Setting range
Default
Property
P2-21
Maximum torque coefficient in weaken field
50%~200%
100.0%
☆
The parameter just valid when the motor operates above the motor rated frequency. When the
motor runs at 2 times of motor rated frequency, if the motor speed drops a lot, please increase
P2-21 properly. Normally no need to be adjusted.
Group P3: V/F Control Parameters
Group P3 is valid only for V/F control mode.
Function
code
Name
Setting range
Default
Property
P3-00
V/F curve setting
0: Linear V/F
1: Multi-point V/F
2: Square V/F
3: 1.2-power V/F
4: 1.4-power V/F
6: 1.6-power V/F
8: 1.8-power V/F
9: Reserved
10: V/F complete separation
11: V/F half separation
0
★
0: Linear V/F
Suitable for constant torque load.
1: Multi-point V/F
Customized curve can be used for special applications like dehydrator and centrifuge.
2: Square V/F
Suitable for centrifugal loads like fan and pump.
3 ~8: V/F curve between linear V/F and square V/F.
10: V/F complete separation
The output frequency and output voltage of the inverter are independent.
The output frequency is determined by the frequency source, and the output voltage is
determined by P3-13.
It is applicable to induction heating, inverse power supply and torque motor control.
11: V/F half separation
V and F are proportional and the proportional relationship can be set in P3-13. The relationship
between V and F are also related to the rated motor voltage and rated motor frequency in Group
P1.
Assume that the voltage source input is X (0 to 100%), the relationship between V and F is:
V/F = 2 *X *(Rated motor voltage)/(Rated motor frequency)