A.5 Drive Derating Data
♦ Temperature Derating
To ensure the maximum performance life, the drives output current must be derated when the drive is installed in areas
with high ambient temperature. 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
Description
Range
Def.
L 8-12
Am bient Temperature
Setting
Adjust the drive overload (oL 2) protection level when the drive is installed in an environment
that exceeds its ambient temperature rating.
-10 to 50
40°C
L8-35
Installation Method
0: IP20 Enclosure
0 or 2
0
Selection
2: N EM A Type 1 Enclosure
IP20 Enclosure
Drive operation between -10°C and 50°C allows 100% continuous current without derating.
♦ Altitude Derating
The drive standard ratings are valid for an installation altitude up to 1000 m. If the altitude exceeds 1000 m both the drive
rated voltage and the rated output current must be derated for 1% per 100 m. The maximum altitude is 3000 m.
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YASKAWA ELECTRIC SIEP C710616 33D YASKAWA AC Drive L1000A Technical Manual
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