Universal constant torque V/F curve: Below the rated frequency, the output voltage and frequency change
linearly, suitable for general mechanical transmission applications such as large inertia fans, punching machines,
centrifuges, and water pumps
F4.02
Torque boost cut-off
frequency
50.00Hz
0.00Hz ~F0.07
F4.03
Multipoint V/F Frequency
Point 3
0.00Hz
F4.05~F2.04
F4.04
Multi-point V F voltage
point 3
/
0.0 %
(0.0 ~ 100.0 ) %
F4.05
Multipoint V F Frequency
Point 2
/
0.00Hz
F4.07 ~F4.03
F4.06
Multi-point V F voltage
point 2
/
0.0 %
(0.0 ~ 100.0 ) %
F4.07
Multi-point V F frequency
point 1
/
0.00Hz 0.00Hz ~ F4.05
F4.08
Multi-point V F voltage
point 1
/
0.0 %
(0.0 ~ 100.0 ) %
Function
code
Name
Default
value
Predetermined area
Parameter Description
F2.11
Asynchronous motor
no-load current
Tuning
parameters
0.01A~F2.03 (inverter power<=55kW)
0.1A~F2.03 (inverter power>55 kW)
● Motor static self-learning: suitable for occasions where it is difficult to separate the motor from the load
and dynamic tuning operation is not allowed
1. Accurately input the motor nameplate parameters: F2.00～F2.06;
2. Write parameter F2.22 as 1 , then press Run to run the inverter;
3. The words " -TUN-" appear on the panel, and the learning is completed;
● Motor dynamic self-learning: suitable for occasions where the motor is easily separated from the
application system :
1. Accurately input the motor nameplate parameters: F2.00～F2.06;
2. Write parameter F2.22 as 2, then press Run to run the inverter ;
3. The words " -TUN-" appear on the panel, and the learning is completed;
Notice
1. When performing parameter self-learning, the motor parameters must be entered correctly
according to the motor nameplate, otherwise the motor parameter self-learning may be
inaccurate.
2. During the motor parameter self-learning process, the learning process can be terminated by
pressing the STOP button , but it may cause incomplete motor parameter self-learning results.
3. During the self-learning process of the motor parameters, if there is an abnormality, it will report
a poor self - tuning fault ( E.tE ).
8.5 V/F control parameters
8.5.1 Linear V/F , multi-point V/F , and torque -reducing V/F curves
Function
code
Name
Default
value
Predetermined area
Parameter Description
0: Straight line V/F curve
1: 2 power drop torque V/F curve
2 : 1.7 power drop torque V/F curve
3 : 1.2 power drop torque V/F curve
4: Multi-point V/F curve
F4.00
V/F curve setting
0 0~4
0.0% (automatic torque boost)
(0.1 ~ 30.0) % (relative to the rated
voltage of the motor)
F4.01
torque boost
Model
confirmed
(0.0 ~ 30.0) %
050
NVF2G Series Inverter User's Guide
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