Derating Data; A.4 Derating Data - YASKAWA D1000 Series Instruction Manual

A.4 Derating Data

A.4 Derating Data
The converter can be operated at above the rated temperature, altitude, and default carrier frequency by derating the
converter capacity.
◆ Temperature Derating
To ensure the maximum performance life, the converter output current must be derated as shown in
converter is installed in areas with high ambient temperature or if converters are mounted side-by-side in a cabinet. In
order to ensure reliable converter overload protection, set parameters L8-35 according to the installation conditions.
Parameter Settings
■
If the ambient temperature is higher than the rating or if converters are installed side by side in the control panel, you must
set the L8-12 and L8-35 parameters according to the installation conditions. Derate the output current according to
Figure A.1
No. Name
Ambient Temperature
L8-12
Setting
Installation Method
L8-35
Selection
Setting 0: IP00/IP20/Open-Chassis Enclosure
Converter operation between -10°C and +50°C allows 100% continuous current without derating.
Setting 1: Side-by-Side Mounting
Converter operation between -10°C and +30°C allows 100% continuous current without derating. Operation between
+30°C and +50°C requires output current derating.
Setting 3: External Heatsink Installation
Converter operation between -10°C and +40°C allows 100% continuous current without derating. Operation between
+40°C and +50°C requires output current derating.
Figure A.1
◆ Altitude Derating
Standard ratings are valid for installation altitudes up to 1000 m. For installations from 1000 m to 3000 m, the converter
rated voltage and the rated output current must be derated for 1% per 100 m.
172
Adjust the converter overload (oL2) protection level
when the converter is installed in an environment that
exceeds its ambient temperature rating.
0: IP00/IP20/Open-Chassis Enclosure
1: Side-by-Side Mounting
3: Finless converter or External Heatsink Installation
100
85
70
55
L8-35=1: Side-by-Side Mounting
0
30 40
-10
Figure A.1 Ambient Temperature and Installation Method Derating
YASKAWA ELECTRIC TOEP C710656 07A YASKAWA Power Regenerative Converter - D1000 Instruction Manual
Description
L8-35=0：IP00, IP20
L8-35=3: External Heatsink Installation
L8-12
(Ambient temp: °C)
50
Figure A.1
Setting Value Default Setting
-10 to +50 +40°C
Default setting is
determined by o2-04
0, 1, 3
(drive model
selection).
when the