Drive Derating Data; Drive Derating Data; Carrier Frequency Derating; Temperature Derating - YASKAWA AC Drive-A1000 Technical Manual

A.5 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
u

Temperature Derating

To ensure the maximum performance life, the drives output current must be derated like shown in
is installed in areas with high ambient temperature or if drives are Side-by-Side mounted in a cabinet. In order to ensure reliable
drive overload protection, the parameters L8-12 and L8-35 must also be set according to the installation conditions.
n Parameter Settings
No. Name
Ambient
L8-12
Temperature Setting
Installation Method
L8-35
Selection
IP00 Enclosure
Drive operation between -10 °C and 50 °C allows 100% continuous current without derating.
Side-by-Side Mounting
Drive operation between -10 °C and 30 °C allows 100% continuous current without derating. Operation between 30 °C and
50 °C requires output current derating.
NEMA Type 1 Enclosure
Drive operation between -10 °C and 40 °C allows 100% continuous current without derating. Operation between 40 °C and
50 °C requires output current derating.
External Heatsink Installation, Finless Drive
Drive operation between -10 °C and 40 °C allows 100% continuous current without derating. Operation between 40 °C and
50 °C requires output current derating.
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual
Figure A.1 as the carrier frequency increases above the factory default setting.
Normal Duty
Heavy Duty
60% of HD
0 2 kHz
Figure A.1 Carrier Frequency Derating (CIMR-Ao5A0003 to 5A0032)
Adjust the drive overload (oL2) protection level when the drive is installed
in an environment that exceeds its ambient temperature rating.
0: IP00/Open-Chassis Drive
1: Side-by-Side Mounting
2: NEMA Type 1 Drive
3: Finless Drive or External Heatsink Installation
5A0003 to 5A0032
8 kHz 15 kHz
Description
A.5 Drive Derating Data
Figure A.2 when the drive
Range Def.
-10 to 50 40 °C
0 to 3 2
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A