Temperature Derating - YASKAWA Z1000 User Manual

Figure A.4 Carrier Frequency Derating (2A0343 to 2A0396 and 4A0414 to 4A0590)
u

Temperature Derating

To ensure the maximum performance life, the drive output current must be derated as shown in
installed in areas with high ambient temperature or if drives are mounted in a cabinet. In order to ensure reliable drive overload
protection, set parameters L8-12 and L8-35 according to the installation conditions.
Note: To install a heatsink on the outside of a panel, design the panel to keep the air temperature inside the panel within 10 °C (18 °F)
[5 °C (9 °F) for 2A0273 and 4A0124] of the outside air temperature.
n Parameter Settings
No. Name
Ambient
L8-12
Temperature Setting
Installation Method
L8-35
Selection
IP00/Open-Chassis Enclosure
Drive operation between -10 °C and +50 °C (14 and 122 °F) allows 100% continuous current without derating. Models
2A0343A, 2A0396A, 4A0361A, 4A0414A, 4A0480A, and 4A0590A are sold as IP00/Open-Chassis.
IP20/NEMA 1, UL Type 1 Enclosure
Drive operation between -10 °C and +40 °C (14 and 104 °F) allows 100% continuous current without derating. Operation
between 40 °C and 50 °C (104 and 122 °F) requires output current derating.
Note: The temperature derating remains unchanged when removing the top protective cover and the bottom conduit bracket to change IP20 NEMA
1, UL Type 1 enclosure models 2A0011F through 2A0273F and 4A0005F through 4A0302F to IP00/Open-Type enclosures (derating
required for temperatures over 40 °C [104 °F]).
External Heatsink Installation
Drive operation between -10 °C and +40 °C (14 and 104 °F) allows 100% continuous current without derating. Operation
between 40 °C and 50 °C (104 and 122 °F) requires output current derating.
YASKAWA ELECTRIC TOEP C710616 45F YASKAWA AC Drive – Z1000 User Manual
100%
80%
0 2 kHz 5 kHz
100%
88%
58%
0 2 kHz 5 kHz
Figure A.5 Carrier Frequency Derating (4A0361)
Description
Adjust the drive overload (oL2) protection level when the drive is installed
in an environment that exceeds its ambient temperature rating.
0: IP00/Open-Chassis Enclosure
2: IP20/NEMA 1, UL Type 1 Enclosure
3: External Heatsink Installation
4A0361
10 kHz
Figure A.6
A.4 Drive Derating Data
when the drive is
Range Def.
40 to 60 40 °C
0, 2, 3 2
279
A