Drive Derating Data; Drive Derating Data; Temperature Derating - YASKAWA CIMR-JA Series Installation & Start-Up Manual

A.6

Drive Derating Data

The drive can be operated at above rated temperature, altitude and default carrier frequency
by derating the drive capacity. For example, a 10 amp continuous rated drive may be operated
at higher temperatures if it is only used to supply 8 amps continuous.
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
should be set according to enclosure type and mounting method as illustrated in
on page 195.
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
No. Name
Ambient
L8-12 Temperature
Setting
Installation
L8-35 Method
Selection
100%
85%
80%
70%
Drive
Rating
50%
0
Figure A.1 Ambient Temperature and Installation Method Derating
YASKAWA ELECTRIC TOEP C710606 25B YASKAWA AC Drive J1000 Installation & Start-Up Manual
Description
Adjust the drive overload (oL2) protection level when the
drive is installed in an environment that exceeds its ambient
temperature rating.
0: Disabled (standard installation)
1: Side-by-Side installation
2: IP20/NEMA Type 1
3: Finless/Fin Outside installation
Parameter L8-35 = 0 (IP20)
30 35 40
A.6 Drive Derating Data
Figure A.1.
Parameter L8-35 = 2
(IP20/NEMA Type 1)
Parameter L8-35 = 3
(Finless/ Fin outside installation)
Parameter L8-35 = 1
(Side-by-side installation)
o
Ambient tem p C
Parameter L8-12
50
195
Figure A.1
Range Def.
40 to 60 40 °C
0 to 2 0
A
195