N700E INSTRUCTION MANUAL
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1.8.3 Environment-Ambient Temperature
The ambient temperature surrounding the inverter should not exceed the allowable temperature range
(14 to 122°F, -10 to 50
℃
). The temperature should be measured in the air gap surrounding the inverter,
shown in the diagram above. If the temperature exceeds the allowable temperature, component life will
become shortened especially in the case of the bus capacitors.
1.8.4 Environment-Humidity
The humidity surrounding the inverter should be within the limit of the allowable percentage range
(20% to 90% / RH). Under no circumstances should the VFD be in an environment where there is the
possibility of moisture entering the inverter.
Also avoid having the VFD mounted in a place that is exposed to the direct sunlight.
1.8.5 Environment-Air
Install the VFD in a place free from dust, corrosive gas, explosive gas, combustible gas, mist of coolant
and sea damage.
1.8.6 Ventilation within an Enclosure
If you are installing one or more VFDs in an enclosure, a ventilation fan should be installed to consider
the airflow shown in Figure 1-22: Air Gap. The positioning of VFD, cooling fans and air intake is very
important. If these positions are wrong, airflow around the VFD decreases and the temperature
surrounding the VFD will rise. So please make sure that the temperature around is within the limit of the
allowable range.