Omron 3G3RX User Manual

2-3
2-1 Installation
2
Design
Installation Environment
•Increased ambient temperatures will shorten the life of the Inverter.
•Keep the Inverter away from heating elements (such as a braking resistor, DC reactor, etc.).
If the Inverter is installed in an enclosure, keep the ambient temperature within the range of the
specifications, taking dimensions and ventilation into consideration.
•When several RX models are installed in an enclosure and a ventilation fan is mounted in the
enclosure, be careful about the layout of the Inverters and the air intake apertures.
Depending on the internal layout of the panel, the Inverter's cooling effect may deteriorate,
resulting in an increase in ambient temperature.
Also, use thorough caution in making sure that the Inverter's ambient temperature is within the
allowable operating temperature range.
•Before installing the Inverter, place a cover over all the ventilation openings to shield them from
foreign objects.
After completing the installation process, be sure to remove the covers from the Inverter before
operation.
•Below is the heat radiation according to the Inverter capacity.
•To raise the carrier frequency, reduce the output current (or derate the rated current).
Inverter
5 cm min. 5 cm min.
*1
Inverter
Airflow
Save enough space to prevent the upper
and lower wiring ducts from blocking
cooling airflow.
*2
Wall
*1 10 cm min.
*2 10 cm min.
Note that replacing the smoothing capacitor
requires 22 cm or more.
Ventilation fan
Ventilation fan
Inverter Inverter
(Correct example) (Incorrect example)
Inverter capacity (kw) 0.4 0.75 1.5 2.2 3.7 5.5 7.5 11 15 18.5
Load with 70% loss (W) 64 76 102 127 179 242 312 435 575 698
Load with 100% loss (W) 70 88 125 160 235 325 425 600 800 975
Efficiency at rated output (%) 85.1 89.5 92.3 93.2 94.0 94.4 94.6 94.8 94.9 95.0
Inverter capacity (kw) 22 30 37 45 55 75 90 110 132
Load with 70% loss (W) 820 1100 1345 1625 1975 2675 3375 3900 4670
Load with 100% loss (W) 1150 1550 1900 2300 2800 3800 4800 5550 6650
Efficiency at rated output (%) 95.0 95.0 95.1 95.1 95.1 95.2 95.2 95.2 95.2

Omron 3G3RX Specifications

General

Brand	Omron
Model	3G3RX
Category	DC Drives
Language	English