Drive Derating Data; Carrier Frequency Derating; Temperature Derating; Output Current Derating Due To Ambient Temperature - YASKAWA V1000 Series Installation & Start-Up 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. For example, a 10 amp continuous rated drive may be
operated at higher temperatures if it is only used to supply 8 amps continuous.
◆

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
◆

Temperature Derating

As the ambient temperature for the drive is increased above the drive specification the drive
should be derated. Additionally parameter L8-35 Side-by-Side Selection on page
be set according to enclosure type and mounting method as illustrated in
Ambient Temperature and Installation Method Derating on page

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
No. Name
Ambient
L8-12 Temperature
Setting
302
Figure
Drive
Rating
200 V Class:
80% of HD
400 V Class
60% of HD
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.
YASKAWA ELECTRIC TOEP C710606 09B YASKAWA AC Drive V1000 Installation & Start-Up Manual
A.1.
Carrier Frequency Derating
Carrier(C6-02)
Description
302
Figure A.2
303.
Figure A.2.
Range
40 to 60
should
Def.
40 °C