Drive Derating Data; Drive Derating Data; Carrier Frequency Derating; Temperature Derating - YASKAWA J1000 Technical Manual

A.6 Drive Derating Data
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 if drives are side-by-side mounted in a cabinet. The output current is derated as shown in
No. Name
Ambient
L8-12
Temperature Setting
Installation Method
L8-35
Selection
<1> This selection assumes that the drive is fitted with the NEMA Type 1 Kit option.
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.
186
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
Figure A.2 Ambient Temperature and Installation Method Derating
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Carrier Frequency Derating
2 10 (8)
Carrier Frequency (C6-02)
186 should be set according to enclosure type and mounting method
Description
<1>
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
YASKAWA ELECTRIC SIEP C710606 31B YASKAWA AC Drive – J1000 Technical Manual
15
Figure A.2.
Range
-10 to 50
0 to 3
Def.
30 °C
0