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Changing the carrier frequency reduces RFI noise and leakage current without increasing motor noise.
Carrier frequency (kHz)=2.5kHz
×
Pn-40 set value
1 2 3
4* 5 6
*Factory preset value
(RATHER HIGH) (NOT AUDIBLE)
Note: Reduce continuous output current for changing the set value to 5 or 6.
Carrier Frequency
Set Value
Maximum Continuous Output Current
1 to 4
Up to 100% of inverter output current
5
Up to 90% of inverter output current
6
Up to 80% of inverter output current
If wiring distance between inverter and motor is long, reduce the carrier frequency. For details, refer to
wiring precautions on page 12.
2.7.20 FREQUENCY/CURRENT METER CALIBRATION
HIGH
LOW
CARRIER FREQUENCY
METALLIC NOISE
FROM MOTOR