Yaskawa AC Drive Z1000 Bypass Technical Manual - Manual (Page 304)

A.4 Drive Derating Data
The drive can be operated at above the rated temperature, altitude, and default carrier frequency by derating the drive capacity.
u Carrier Frequency Derating
Derate the drive according to Figure A.1 to Figure A.3 as the carrier frequency increases above the factory default setting.
12.5 kHz 5 kHz
100%
60%
0
Figure A.1 Carrier Frequency Derating (Z1B1D002 to D114 and B001 to B096)
8 kHz 5 kHz
100%
80%
10 kHz 0
Figure A.2 Carrier Frequency Derating (Z1B1D143 to D173 and B124 to B180)
4kHz
100%
60%
10kHz 0
Figure A.3 Carrier Frequency Derating (Z1B1B240 and B302)
u Altitude Derating
The drive standard ratings are valid for installation altitudes up to 1000 m. For installations from 1000 m to 3000 m, the drive
rated output current must be derated for 0.2% per 100 m.
A.4 Drive Derating Data
304 YASKAWA ELECTRIC SIEP YAIZ1B 01D YASKAWA AC Drive – Z1000 Bypass Technical Manual