Temperature Derating - YASKAWA A1000 Technical Manual

Figure A.5
Figure A.6
 Temperature Derating
To ensure the maximum performance life, the drives output current must be derated like shown in
drive 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.

Parameter Settings
No. Name
Ambient Temperature
L8-12
Setting
Installation Method
L8-35
Selection
0: IP00 Enclosure
Drive operation between -10C and 50C allows 100% continuous current without derating.
1: 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.
2: IP20/NEMA 1, UL 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.
YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual
Normal Duty
Heavy Duty
83% of HD
0
Figure A.5 Carrier Frequency Derating (CIMR-A4A0515 and 4A0675)
Normal Duty
Heavy Duty
62.5% of HD
0
Figure A.6 Carrier Frequency Derating (CIMR-A4A0930 and 4A1200)
Adjust the drive overload (oL2) protection level when the drive is installed in an environment
that exceeds its ambient temperature rating.
0: IP00 Enclosure
1: Side-by-Side Mounting
2: IP20/NEMA 1, UL Type 1 Enclosure
3: Finless Drive or External Heatsink Installation
4A0515, 4A0675
2 kHz
5 kHz
4A0930，4A1200
2 kHz
5 kHz
Description
A.6 Drive Derating Data
Figure A.7 when the
Range Def.
-10 to 50 40°C
0 to 3 0
A
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