A.6 Drive Derating Data
The drive can be operated at above rated temperature, altitude and default carrier frequency by derating the drive capacity.
u
Temperature Derating
As
the ambient temperature for the drive is increased above the drive specification the drive should be derated. Additionally
parameter L8-35 Installation Method Selection on page 168 should be set according to enclosure type and mounting method
as illustrated in Figure A.1 on page 168.
n
Output Current Derating Due to Ambient Temperature
If the ambient temperature is above the drive specification or if drives are side-by-side mounted in a cabinet, the parameters
L8-12 and L8-35 must be set according to the installation conditions. The output current is derated as shown in Figure
A.1.
No. Name Description Range Def.
L8-12
Ambient
Temperature Setting
Adjust the drive overload (oL2) protection level when the drive is installed
in an environment that exceeds its ambient temperature rating.
-10 to 50 30 °C
L8-35
Installation Method
Selection
0: IP20/Open-Chassis Drive
1: Side-by-Side Mounting
2: NEMA Type 1 Drive
3: Finless Drive or External Heatsink Installation
0 to 3 0
40
50
0
30
o
35
50%
70%
80%
85%
100%
oo
o
Drive
Rating
Ambient temp C
Parameter L8-12
Parameter L8-35 = 0 (IP20/Open-Chassis Drive)
Parameter L8-35 = 2
(NEMA Type 1 Drive)
Parameter L8-35 = 1
(Side-by-side Mounting)
Parameter L8-35 = 3
(Finless Drive or External
Heatsink Installation)
Figure A.1 Ambient Temperature and Installation Method Derating
A.6 Drive Derating Data
168
SIEP C710606 33A OYMC AC Drive – J1000 User Manual
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