INVT Goodrive20-UL VFD Series Operation Manual page 38

Goodrive20-UL Series VFD
Function
Name
code
Carrier
P00.14 frequency
setting
Motor
parameter
P00.15
autotunin
g
Description
Carrier
Electromagnetic
frequency
noise
High
1kHz
10kHz
Low
15kHz
The relationship table of the motor type and
carrier frequency:
Motor type
0.4–2.2kW
The advantage of high carrier frequency: ideal
current waveform, little current harmonic wave
and motor noise.
The disadvantage of high carrier frequency:
increasing the switch loss, increasing VFD
temperature and the impact to the output
capacity. The VFD needs to derate on high
carrier frequency. At the same time, the leakage
and electrical
increase.
Applying low carrier frequency is contrary to the
above, too low carrier frequency will cause
unstable running, torque decreasing and surge.
The manufacturer has set a reasonable carrier
frequency when the VFD is in factory. In
general, users do not need to change the
parameter.
When the frequency used exceeds the default
carrier frequency, the VFD needs to derate 20%
for each additional 1k carrier frequency.
Setting range: 1.0–15.0kHz
0: No operation
1: Rotation autotuning
Comprehensive motor parameter autotune
It is recommended to use rotation autotuning
Noise and leakage
current
Low
High
Factory setting of
carrier frequency
8kHz
magnetic interference
-33-
Function parameters
Default
Heating
eliminating
Low
High
Depend
on model
will
0
Modify
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