Yaskawa Z1000U HVAC Matrix Bypass - Manual (Page 304)

A.3 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 as the carrier frequency increases above the factory default setting.
100 %
90 %
80 %
70 %
4 kHz 6 kHz 8 kHz 10 kHz 0
Figure A.1 Carrier Frequency Derating
A.3 Drive Derating Data
304 YASKAWA SIEP YAIZ1D 01A Z1000U HVAC MATRIX Drive Bypass Technical Manual