Drive Derating Data; Drive Derating Data; Carrier Frequency Derating; Temperature Derating - YASKAWA CIMR-VU BA0001 Technical 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.
u

Carrier Frequency Derating

Derate drive capacity using
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
as illustrated in Figure A.2.
n Output Current Derating Due to Ambient Temperature
Set L8-12 and L8-35 according to the installation conditions when the ambient temperature is above the drive specification
or when drives are mounted side-by-side in a cabinet. The output current is derated as shown in
No. Name
Ambient
L8-12
Temperature Setting
Installation Method
L8-35
Selection
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual
Figure A.1 as the carrier frequency of the drive increases above the factory setting.
Drive
Rating
ND
HD
200 V Class:
80% of HD
400 V Class:
60% of HD
0
Figure A.1 Carrier Frequency Derating
Adjust the drive overload (oL2) protection level when the drive is installed
in an environment that exceeds its ambient temperature rating.
0: IP20/IP00 Drive
1: Side-by-Side Mounting
2: NEMA Type 1 Drive
3: Finless Drive or External Heatsink Installation
100%
85%
80%
70%
Drive
Rating
50%
0%
o
-10
Figure A.2 Ambient Temperature and Installation Method Derating
Carrier Frequency Derating
2 10 (8)
Carrier Frequency (C6-02)
351 should be set according to enclosure type and mounting method
Description
Parameter L8-35 = 0 (IP20/IP00 Drive)
Parameter L8-35 = 2
(NEMA Type 1 Drive)
Parameter L8-35 = 3
(Finless Drive or External
Heatsink Installation)
Parameter L8-35 = 1
(Side-by-side Mounting)
Ambient tem p C
Parameter L8-12
o o o o
30 35 40 50
A.6 Drive Derating Data
15
Figure A.2.
Range
-10 to 50
0 to 3
o
Def.
40 °C
0
A
351