Yaskawa G7 Drive - Manual (Page 258)

Machine Protection
6-
41
• 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.
Fig 6.33 Overload Reduction Level for V/f Control, V/f Control with PG, Open-loop Vector Control 1,
and Flux Vector Control
Fig 6.34 Overload Reduction Level for Open-loop Vector Control 2
100%
15kH z 0
50%
80%
200V 級22kW
10kH z
200-240 V, 22 kW
Carrier frequency
Overload reduction level
100%
8kHz 0
50%
4kHz
87%
200-240 V, 30 to 75 kW
Overload reduction level
Carrier frequency