Veikong VFD500 Series User Manual page 77

Chapter 5 Function code
Function
Parameter name
code
Multi-point VF Frequency
P12.03
1(F1)
Multi-point VF Voltage
P12.04
1(V1)
Multi-point VF Frequency
P12.05
1(F2)
Multi-point VF Voltage
P12.06
2(V2)
Multi-point VF Frequency
P12.07
3(F3)
Multi-point VF Voltage
P12.08
3(V3)
P12.09 Torque boost
Automatic torque boost

When P12.09=0=Automatic torque boost, inverter will automatically compensate output voltage to improve torque
in low frequency as per actual load ,it is useful for linear VF curve
Manual torque boost

When P12.09 not 0,it means manual torque output. Output frequency 0 torque increasing

value=p12.09*motor stator resistance *rated excitation current, increasing value will be gradually decreased
as frequency increase ,if higher than 50% of motor rated frequency, increasing value will be zero
Notice: manual torque boost is useful to linear and power curve

P12.11 Slip compensation gain
Slip compensation filter
P12.12
time
VFD500 high performance vector control frequency inverter user manual
Description
multi-point VF curve F0(P12.01)～
multi-point VF curve F2(P12.05)
0.0%～100.0%
multi-point VF curve F1(P12.03)～
multi-point VF curve F3(P12.08)
0.0%～100.0%
multi-point VF curveF2(P12.05)～
600.00Hz
0.0%～100.0%
0%～200% 0% is automatic torque
boost
0～200%
It is used to compensate the speed
drop of the asynchronous motor VF
control with load, and improve the
speed control accuracy. Please adjust
according to the following principles:
Increase the setting when the

motor speed is lower than the
target value with loading.
Reduce this setting when the

motor speed is higher than the
target value with loading,
0.01s～10.00s
It is used to adjust the speed and
stability of the VF control response to
the load.
Decrease this setting when the

load response is slow.
Increase this setting when the

speed is unstable
- 75-
Default Property
50.00Hz
☆
100.0%
☆
50.00Hz
☆
100.0%
☆
50.00Hz
☆
100.0%
☆
0%
☆
100%
☆
1.00s
☆