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Chapter 6 Description of Function Codes
These six parameters are used to define the multi-point V/F curve.
The multi-point V/F curve is set based on the motor's load characteristic. The relationship
between voltages and frequencies is:
V1<V2<V3
,
f1<f2<f3
At low frequency, higher voltage may cause overheat or even burnt out of the motor and ove-
rcurrent stall or overcurrent protection of the AC drive.
Function
code
Name
Description
(setting range)
Factory
Default
Change
F04.03
Motor1 V/F frequency
point 1
0.00Hz
~
F04.05
0.00Hz
●
F04.04
Motor1 V/F voltage point 1 0.0%
~
100.0%
0.0%
●
F04.05
Motor1 V/F frequency
point 2
F04.03
~
F04.07
0.00Hz
●
F04.06
Motor1 V/F voltage point 2 0.0%
~
100.0%
0.0%
●
F04.07
Motor1 V/F frequency
point 3
F04.05
~
F02.02
(
motor
rated frequency
0.00Hz
●
F04.08
Motor1 V/F voltage point 3 0.0%
~
100.0%
0.0%
●
Frequency %
Voltage
%
V
3
f
b
f
1
V
1
f
2
f
3
V
2
V
b
V : Rated motor voltage
b
V -V :
The percentage of the voltage of the 1st-3rd stage of the multi-speed V/F
1
3
f
: Rated motor running frequency
b
f
- :
Frequency percentage of 1st-3rd stage of multi-speed V/F
f
1
3
-116-
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