Commissioning and Trial Run
‑52‑
2.2.10(Optional) V/f Parameter Settings
Param
eter
Code
Parameter
Name
Default Value Range Description
F3‑00
V/f curve
setting
0
0: Linear V/f
curve
1: Multi‑point V/f
curve
2‑9: Reserved
10: V/f complete
separation mode
11: V/f semi‑
separation mode
0: Linear V/f curve
The output voltage changes linearly with the output frequency when
the frequency is lower than the rated frequency. This curve applies to
general mechanical transmission applications such as acceleration of
high‑inertia fans, punch presses, centrifuges, and water pumps.
1: Multi‑point V/f curve
The frequency ranges from 0.00 Hz to the rated motor frequency. The
range of the voltage point is 0.0% to 100.0%, which corresponds to 0
V to the rated motor voltage. Set the multi‑point V/f curve based on
load characteristics of the motor. Observe this formula during
settings: F3‑03 ≤ F3‑05 ≤ F3‑07
2‑9: Reserved
10: V/f complete separation mode
The output frequency and output voltage of the drive are
independent of each other. The output frequency is determined by
the frequency source, and the output voltage is determined by the V/f
separation voltage source. This curve applies to torque motor control
applications.
11: V/f semi‑separation mode
In this mode, the voltage and frequency are proportional, which can
be set through the voltage source. The relationship between the
voltage and frequency is also related to the rated motor voltage and
rated motor frequency. If the voltage source input is X (0 to ‑100%),
the relationship between the voltage and frequency is as follows: V/f =
2 x X x (Rated motor voltage)/(Rated motor frequency)
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