Preset-Speed Operation Frequency 8; Pwm Carrier Frequency - Toshiba TOSVERT VF-S9 Instruction Manual

6.10 Preset-speed operation frequency 8 to 15
See Section 5.15 for details.

6.11 PWM carrier frequency

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