Chapter 6 Description of Function Codes
Relationship between model and carrier frequency:
Highest carrier
frequency(kHz)
Lowest carrier
frequency (kHz)
Default(kHz)
G model
:
0.75kW
~
11kW
P model
:
0.75kW
~
15kW
16
0.5
6
G model
:
15kW
~
45kW
P model
:
18.5kW
~
55kW
16
0.5
4
G model
:
55kW
P model
:
75kW
16
0.5
3
G model
:
75kW
~
315kW
P model
:
93kW
~
350kW
16
0.5
2
Carrier frequency
Model
This function is mainly used to improve the noise of motor operation and the interference of
the inverter to the outside world.
Advantages of using high carrier frequency: ideal current waveform, less current harmonics,
and low motor noise;
Disadvantages of using high carrier frequency: the switching loss increases, the temperature
rise of the inverter increases, and the output capacity of the inverter is affected. Under high
carrier frequency, the inverter needs to be derated; External electromagnetic interference
increases.
Using a low carrier frequency is the opposite of the above situation. Too low carrier freque-
ncy will cause unstable operation at low frequencies, torque reduction and even oscillation.
When the inverter leaves the factory, the carrier frequency has been reasonably set. Under
normal circumstances, users do not need to change this parameter.
It is used to set whether the carrier frequency is adjusted based on the temperature. The AC
drive automatically reduces the carrier frequency when detecting that the heatsink temperat-
ure is high. The AC drive resumes the carrier frequency to the set value when the heatsink
temperature becomes normal. This function reduces the overheat alarms.
Function
code
Name
Description
(setting range)
Factory
Default
Change
F00.18
Carrier frequency
adjustment with
temperature
0: No
1: Yes
1
※
Function
code
Name
Description
(setting range)
Factory
Default
Change
F00.19
Source of frequency
upper limit
0: set by F00.04
1: analog AI1
0
●
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C
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