YASKAWA V1000 Series Installation & Start-Up Manual page 127

Carrier Frequency Selection (C6-02)
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Fixed Carrier Frequencies
The carrier frequency can be set using parameter C6-02 as shown in table below.
Parameter Name
Carrier
C6-02
frequency
Swing PWM uses low carrier frequency but by applying special PWM patterns
TERMS TERMS TERMS
the audible noise of the motor is kept low.
Use the following guideline to set up the carrier frequency:
Symptom
Speed and torque are unstable at low speeds.
Noise from the drive is affecting peripheral devices.
Excessive leakage current from the drive.
Wiring between the drive and motor is too long.
Motor acoustic noise is too loud.
<1> The carrier frequency may need to be lowered if the motor cable is too long. Refer to the table
below.
Wiring Distance
C6-02 (Carrier Frequency
Selection)
YASKAWA TM.V1000.01 V1000 Drive Installation & Start-Up Manual (Preliminary 01-19-07)
4.4 Basic Parameter Adjustments
Description
1: 2.0 kHz
2: 5.0 kHz
3: 8.0 kHz
4: 10.0 kHz
5: 12.5 kHz
6: 15.0 kHz
7: Swing PWM1
8: Swing PWM2
9: Swing PWM3
A: Swing PWM4
F: User defined (C6-03 to C6-05)
Lower the carrier frequency.
<1>
Increase the carrier frequency or use Swing PWM.
Up to 50 m
0 to 6 (15 kHz)
Setting Range
1 to F
Remedy
Up to 100 m Greater than 100 m
0 to 4 (10 kHz)
Default
depends on
drive size
0 to 2 (5 kHz)
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