YASKAWA G7 Series Technical Manual page 259

With vector control, the carrier frequency is fixed to the Carrier Frequency Upper Limit in C6-03 if user-
•
set or by the carrier frequency set in C6-02.
To fix the carrier frequency, set C6-03 and C6-04 to the same value, or set C6-05 to 0.
•
If the settings are as shown below, OPE11 (Parameter setting error) will occur.
•
If Carrier Frequency Proportional Gain (C6-05) > 6 and C6-03 < C6-04.
Depending on the carrier frequency setting, the Drive's overload level may be reduced. Even when the
•
overload current falls to below 150%, OL2 (Drive overload) will be detected. The Drive overload current
reduction level is shown below.
Overload reduction level
100%
80%
50%
0
Fig 6.33 Overload Reduction Level for V/f Control, V/f Control with PG, Open-loop Vector Control 1,
Overload reduction level
100%
87%
50%
0
Fig 6.34 Overload Reduction Level for Open-loop Vector Control 2
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200-240 V, 22 kW
200V 級22kW
10kH z 15kH z
and Flux Vector Control
200-240 V, 30 to 75 kW
4kHz 8kHz
Machine Protection
Carrier frequency
Carrier frequency
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6-