2.4 C: Tuning
272 YASKAWA TOEPYAIGA8002B GA800 Drive Programming
Figure 2.58 Setting a Variable Carrier Frequency to Agree with the Output Frequency
Note:
• When C6-05 ≤ 7, the drive disables C6-04. The carrier frequency is fixed to the value set to C6-03.
• The drive detects oPE11 [Carrier Frequency Setting Error] when these conditions are correct at the same time:
–C6-05 ≥ 6
–C6-04 ≥ C6-03
■ C6-04: Carrier Frequency Lower Limit
No.
(Hex.)
Name Description
Default
(Range)
C6-04
(0226)
Carrier Frequency Lower
Limit
Sets the lower limit of the carrier frequency. Set C6-02 = F [Carrier Frequency Selection = User
Defined (C6-03 to C6-05)] to set this parameter.
Determined by C6-02
(1.0 - 15.0 kHz)
Set C6-03 [Carrier Frequency Upper Limit], C6-04, and C6-05 [Carrier Freq Proportional Gain] to make the carrier
frequency change linearly with the output frequency.
Note:
The drive detects oPE11 [Carrier Frequency Setting Error] when these conditions are correct at the same time:
• C6-04 ≥ C6-03
• C6-05 ≥ 6
■ C6-05: Carrier Freq Proportional Gain
No.
(Hex.)
Name Description
Default
(Range)
C6-05
(0227)
Carrier Freq Proportional
Gain
Sets the proportional gain for the carrier frequency. Set C6-02 = F [Carrier Frequency Selection =
User Defined (C6-03 to C6-05)] to set this parameter.
Determined by C6-02
(0 - 99)
Set C6-03 [Carrier Frequency Upper Limit], C6-04 [Carrier Frequency Lower Limit], and C6-05 to make the carrier
frequency change linearly with the output frequency.
■ C6-09: Carrier Freq at Rotational Tune
No.
(Hex.)
Name Description
Default
(Range)
C6-09
(022B)
Carrier Freq at Rotational
Tune
Sets the Auto-Tuning carrier frequency. Usually it is not necessary to change this setting.
0
(0, 1)
If you set C6-09 = 0 for a high-frequency or low-impedance motor, it can cause oC [Overcurrent]. To prevent oC, set
the carrier frequency to a high value and set C6-09 = 1 before you do Auto-Tuning.
The procedure to set the carrier frequency when the A1-02 [Control Method Selection] setting changes.
• When A1-02 = 2, 3 [OLV, CLV], set C6-02 = F [Carrier Frequency Selection = User Defined (C6-03 to C6-05)]
and then increase the value set to C6-03 [Carrier Frequency Upper Limit].
• When A1-02 = 4 to 7 [AOLV, OLV/PM, AOLV/PM, or CLV/PM], use C6-02 to increase the carrier frequency.
0 : 5kHz
Note:
When A1-02 = 5, 6, 7 [Control Method Selection = OLV/PM, AOLV/PM, CLV/PM], the carrier frequency is 2 kHz.
1 : use C6-03
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