4-40
4-2 Function Mode
4
Functions
Carrier Frequency
You can change the PWM waveform carrier frequency output from the Inverter.
•With the carrier frequency set high, you can reduce metallic noise from the motor. However, this
may increase electrical noise or leakage current from the Inverter.
•Carrier frequency adjustment also helps avoid mechanical or motor resonance.
•To raise the carrier frequency, reduce the output current (or derate the rated current) as shown in
the graph below.
Parameter No. Function name Data Default setting Unit
b083 Carrier frequency 2.0 to 12.0 3.0 kHz
4 6 8 10 12
100%
95%
90%
85%
80%
75%
70%
60%
65%
2
200-V Class
0.2/0.4/2.2/5.5kW
1.5kW
7.5kW
4 6 8 10 12
100%
95%
90%
85%
80%
75%
70%
60%
65%
2
400-V Class
5.5kW
2.2kW
3.7kW
0.4 to 1.5/7.5kW
0.75kW
3.7kW
4 6 8 10 12
Output current (Rated current %)
100%
95%
90%
85%
80%
75%
70%
2
Carrier frequency [kHz]
(3) Side-By-Side installation (ambient temperature:40°C)
200-V Class
3.7 kW
0.2 to 2.2 · 5.5/7.5kW
4 6 8 10 12
100%
95%
90%
85%
80%
75%
70%
2
400-V Class
5.5/kW
7.5kW
3.7kW
0.4 to 2.2kW
Output current (Rated current %)
Carrier frequency [kHz]
(2) Ambient temperature 50°C
Output current (Rated current %)
Output current (Rated current %)
Carrier frequency [kHz] Carrier frequency [kHz]
4 6 8 10 12
100%
95%
90%
85%
80%
75%
2
200-V Class
0.2 to 2.2 · 5.5/7.5kW
3.7kW
(1) Ambient temperature 40°C
Output current (Rated current %)
Carrier frequency [kHz]
4 6 8 10 12
100%
95%
90%
85%
80%
75%
2
400-V Class
0.4 to 2.2 · 5.5/7.5kW
3.7kW
Output current (Rated current %)
Carrier frequency [kHz]
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