Drive Derating Data; Drive Derating Data; Carrier Frequency Derating; Temperature Derating - YASKAWA L1000V Technical Manual

A.5 Drive Derating Data
A.5 Drive Derating Data
The drive can be operated at above the rated temperature, altitude, and default carrier frequency by derating the drive
capacity.
u Carrier Frequency Derating
Derate the drive according to
Figure A.1
u Temperature Derating
To ensure the maximum performance life, the drives output current must be derated when the drive is installed in areas
with high ambient temperature. In order to ensure reliable drive overload protection, the parameters L8-12 and L8-35
must also be set according to the installation conditions.
n
Parameter Settings
No.
Ambient Temperature
L8-12
Setting
Installation Method
L8-35
Selection
According to the settings of parameters L8-12 and L8-35, the drive will be derated as shown in
Figure A.2
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 by 1% per 100 m. The maximum altitude is 3000 m.
220
Figure A.1 when the carrier frequency is increased above the factory default setting.
Drive
Rating
100%
200 V Class:
80% of Output Rating
400 V Class:
60% of Output Rating
0
Figure A.1 Carrier Frequency Derating
Name
Adjusts the drive overload (oL2) protection level when the drive is installed in an environment
that exceeds its ambient temperature rating.
0: IP20 Enclosure
1: Side-by-Side Mounting
2: NEMA Type 1 Enclosure
3: Finless Drive or External Heatsink Installation
Drive
Rating
100%
85%
80%
70%
50%
0
Ambient Temp (L8-12)
Figure A.2 Temperature Derating
YASKAWA EUROPE SIEP
2 8
Carrier Frequency (C6-02)
Description
L8-35 = 0 (IP20/Open-Chassis Drive)
L8-35 = 3
(Finless Drive or External
Heatsink Installation)
L8-35 = 1
(Side-by-side Mounting)
50 °C
30 35 40
15 kHz
Range
-10 to 50
Figure
L8-35 = 2
(NEMA Type 1 Drive)
YASKAWA AC Drive L1000V Technical Manual
Def.
40 °C
Drive model
0 to 3 (o2-04)
dependent
A.2.