Drive Derating Data; Drive Derating Data; Carrier Frequency Derating; Temperature Derating - YASKAWA V1000 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
u

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
input voltage and the rated output current must be derated for 1% per 100 m. The maximum altitude is 3000 m.
YASKAWA ELECTRIC SIEP C710606 16C 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)
327 should be set according to enclosure type and mounting method
Description
Parameter L8-35 = 0 (IP20/IP00 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
50
30 35 40
A.6 Drive Derating Data
15
Figure A.2.
Range
-10 to 50
0 to 3
Parameter L8-35 = 2
(NEMA Type 1 Drive)
o
Def.
40 °C
0
A
327