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E6580757
F-22
6
6.10 Preset-speed operation frequency 8 to 15
∼ : Preset-speed operation frequency 8 to 15
See Section 5.15 for details.
6.11 PWM carrier frequency
: PWM carrier frequency
: Random mode
• Function
1) The F300 parameter allows the tone of the magnetic noise from the motor to be changed by switching
the PWM carrier frequency. This parameter is also effective in preventing the motor from resonating
with its load machine or its fan cover.
2) In addition, the F300 parameter reduces the electromagnetic noise generated by the inverter. Reduce
the carrier frequency to reduce electromagnetic noise. Note: Although the electromagnetic noise level
is reduced, the magnetic noise of the motor is increased.
3) The random mode reduces motor electromagnetic noise by changing the pattern of the reduced carrier
frequency. (Allowable operation frequency: 80Hz max.)
[Parameter setting]
Title Function Adjustment range Default setting
PWM carrier frequency 2.0 ∼ 16.5 (kHz) * 12.0
Random mode 0: Disabled, 1: Enabled 0
* Load reduction will be required if the PWM carrier frequency is modified for each applicable motor model.
Load reduction ratios required
[200V Class]
Carrier frequency
VFS9-
VFS9S-
4kHz or less 12kHz 15kHz 16.5kHz
2002PL/M 1.5A 1.5A 1.5A 1.5A
2004PL/M 3.3A 3.3A 3.1A 3.0A
2007PL/M 4.8A 4.4A 4.2A 3.9A
2015PL/M 7.8A 7.5A 7.2A 7.1A
2022PL/M 11.0A 10.0A 9.1A 8.7A
2037PM 17.5A 16.5A 15.0A 14.3A
2055PL 27.5A 25.0A 25.0A 25.0A
2075PL 33.0A 33.0A 29.8A 28.2A
2110PM 54.0A 49.0A 49.0A 49.0A
2150PM 66.0A 60.0A 54.0A 51.0A