YASKAWA Z1000 User Manual page 127

No. Parameter Name
C6-02 Carrier Frequency Selection
Settings:
C6-02
1
2
3
4
5
7
Note: Swing PWM uses a carrier frequency of 2.0 kHz as a base, then applies a special PWM pattern to reduce the audible noise.
Guidelines for Carrier Frequency Parameter Setup
Speed and torque are unstable at low speeds
Noise from the drive affects peripheral devices
Excessive leakage current from the drive
Wiring between the drive and motor is too long
Audible motor noise is too loud
<1> The carrier frequency may need to be lowered if the motor cable is too long. Refer to the following table.
Wiring Distance
Recommended setting value for C6-02
Note: The maximum cable length is 100 m when using OLV/PM (A1-02 = 5).
n d2-01: Frequency Reference Upper Limit
Sets the maximum frequency reference as a percentage of the maximum output frequency. This limit applies to all frequency
references.
Even if the frequency reference is set to a higher value, the drive internal frequency reference will not exceed this value.
No.
d2-01
n d2-02: Frequency Reference Lower Limit
Sets the minimum frequency reference as a percentage of the maximum output frequency. This limit applies to all frequency
references.
If a lower reference than this value is entered, the drive will run at the limit set to d2-02. If the drive is started with a lower
reference than d2-02, it will accelerate up to d2-02.
No.
d2-02
YASKAWA TOEP YAIZ1U 03B YASKAWA AC Drive – Z1000 User Manual
Carrier Frequency
2.0 kHz
5.0 kHz
8.0 kHz
10.0 kHz
12.5 kHz
Swing PWM 1
Symptom
<1>
Up to 50 m
1 to F (up to 12.5 kHz)
Parameter Name
Frequency Reference Upper Limit
Parameter Name
Frequency Reference Lower Limit
Internal frequency
reference
d2-01
Operating
range
d2-02
Figure 4.21 Frequency Reference: Upper and Lower Limits
4.7 Basic Drive Setup Adjustments
Setting Range
1 to 5; 7 to 9; A to F
C6-02
8
9
A
B to E
F
Lower the carrier frequency.
Increase the carrier frequency or use Swing PWM.
Up to 100 m
1 to 2 (up to 5 kHz),
7 (Swing PWM)
Frequency Reference Upper Limit
Frequency Reference Lower Limit
Set frequency reference
Default
Determined by A1-02 and o2-04
Carrier Frequency
Swing PWM 2
Swing PWM 3
Swing PWM 4
No setting possible
User defined
Remedy
Greater than 100 m
1 (up to 2 kHz), 7 (Swing PWM)
Setting Range
0.0 to 110.0%
Setting Range
0.0 to 110.0%
Default
100.0%
4
Default
0.0%
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