NVF5 Series User Manual Chapter 6 Parameter Function Description
F4.02
Torque Boost
Cut-off Point
50.00Hz
0.00Hz
～
F0.07
-
F4.03
Multi-point VF
Frequency Point 3
0.00Hz
F4.05
～
F2.04
-
F4.04
Multi-point
VF
Voltage Point 3
0.0%
（
0.0 ~ 100.0
）
% -
F4.05
Multi-point VF
Frequency Point 2
0.00Hz
F4.07
～
F4.03
-
F4.06
Multi-point
VF
Voltage Point 2
0.0%
（
0.0 ~ 100.0
）
% -
F4.07
Multi-point VF
Frequency Point 1
0.00Hz
0.00 Hz
～
F4.05
-
F4.08
Multi-point
VF
Voltage Point 1
0.0%
（
0.0 ~ 100.0
）
%
-
● General Constant Torque V/F curve
：
Under the rated frequency, the output voltage
changes linearly with the output frequency, which is suitable for general mechanical
machines such as large inertia fans, punches, centrifuges, pumps and so on.
Output Vol. V
Output freq. f
Torque boost
Torque boost
cut-off freq.
Max.
Output Vol.
Normal
Running Freq.
Figure 6-5-1 General Constant Torque Linear V/F Curve
● Custom Multi-Point V/F Curve
：
range of frequency setting 0.00Hz
～
Motor Rated
Frequency
，
range of voltage setting 0.0%
～
100% Corresponding 0V
～
Motor Rated
Voltage
，
the setting of Multi-Point V/F curve is normally decided by the load
characteristics of the motor.
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