Drive Derating Data; Drive Derating Data; Carrier Frequency Derating; Temperature Derating - Omron V1000 User 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

As the carrier frequency of the drive is increased above the factory setting the drive capacity should be derated according
to Figure A.1.
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
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
A.2.
No. Name
Ambient
L8-12
Temperature Setting
Installation Method
L8-35
Selection
Drive
Rating
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.
SIEP C710606 20 OYMC AC Drive - V1000 User Manual
Drive
Carrier Frequency Derating
Rating
ND
HD
200 V Class:
80% of HD
400 V Class:
60% of HD
0
2
Figure A.1 Carrier Frequency Derating
on page 295.
Adjust the drive overload (oL2) protection level when the drive is installed
in an environment that exceeds its ambient temperature rating.
0: IP20/Open-Chassis Drive
1: Side-by-Side Mounting
2: NEMA Type 1 Drive
3: Finless Drive or External Heatsink Installation
100%
85%
80%
70%
50%
0
o
30
Figure A.2 Ambient Temperature and Installation Method Derating
10 (8) 15
Carrier (C6-02)
295 should be set according to enclosure type and mounting method
Description
Parameter L8-35 = 0 (IP20/Open-Chassis 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
35 40 50
A.6 Drive Derating Data
Figure
Range Def.
40 to 60 40 °C
0 to 3 0
295
A