Toshiba VF-S9 manual Preset-speed operation frequency 8 to, PWM carrier frequency, Random mode

Models: VF-S9

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6.10 Preset-speed operation frequency 8 to 15

E6580757

6.10 Preset-speed operation frequency 8 to 15

∼  : 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.

6

 

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]

VFS9-

 

Carrier frequency

 

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

F-22

Page 106
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Toshiba VF-S9 manual PWM carrier frequency, ∼ Preset-speed operation frequency 8 to, Random mode