Temperature Derating - YASKAWA T1000A Technical Manual

A.6 Drive Derating Data
u Temperature Derating
To ensure the maximum performance life, the drives output current must be derated like shown in
Figure A.8 when the 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.
n
Parameter Settings
No.
Ambient Temperature
L8-12
Setting
Installation Method
L8-35
Selection
IP20 enclosure
Drive operation between -10°C and 50°C allows 100% continuous current without derating.
Figure A.5
Figure A.5 Ambient Temperature and Installation Method Derating (L8-35 = 0)
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.
Figure A.6
Figure A.6 Ambient Temperature and Installation Method Derating (L8-35 = 1)
360
Name
Adjust the drive overload (oL2) protection level when the drive is installed in an environment
that exceeds its ambient temperature rating.
0: IP20 enclosure
1: Side-by-Side mounting
2: NEMA Type 1
3: Finless model or external heatsink installation
Drive Rating
(%)
100
0
-10
Drive Rating
(%)
100
70
0
30
-10
Description
L8-35=0: IP20 Enclosure Drive
L8-12
(Ambient temp: °C)
50
L8-35=1: Side-by-Side Mounting
L8-12
(Ambient temp: °C)
50
YASKAWA ELECTRIC SIEP C710616 30B YASKAWA AC Drive T1000A Technical Manual
Figure A.5
Range
-10 to 50
0 to 3
YEG
to
Def.
40°C
0