Instruction manual

67
Set inverter output transistor switching frequency (carrier frequency).
Reducing motor noise or leakage current (n080)
Setting
7
8
9
1
2
3
4
Carrier Frequency (kHz)
12 fout
24 fout
36 fout
2.5
5.0
7.5
10.0
Metallic Noise
from Motor
Noise and Current
Leakage
Higher
Not
audible
Smaller
Larger
(Hz)
(Hz)
(Hz)
(kHz)
(kHz)
(kHz)
(kHz)
Setting values 7, 8, or 9 multiplies output frequency according to output
frequency value.
fc=CARRIER FREQUENCY
2.5kHz
1.0kHz
83.3Hz 208.3Hz
fout=
OUTPUT FREQUENCY
fc=12 fout
fc=CARRIER FREQUENCY
2.5kHz
1.0kHz
41.6Hz 104.1Hz
fout=
OUTPUT FREQUENCY
fc=24 fout
fc=CARRIER FREQUENCY
2.5kHz
1.0kHz
27.7Hz 69.4Hz
fout=
OUTPUT FREQUENCY
fc=36 fout
n080=7
n080=8
n080=9