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Chapter 4 – Installation
The inverter must be mounted vertically on a non-flammable wall in order to prevent from overheating and
fire. The minimum clearances to the surrounding walls shown in the figure below must be complied with to
ensure a good ventilation. Foreign matter (especially conductive objects) must nut be dropped into the
inverter since they not only cause malfunction and damage but may also lead to electrical and fire hazards.
Cover all ventilation holes on the inverter during installation so that no foreign objects can enter the inverter.
Be sure to remove those covers from the inverter before you put the inverter to work.
The minimum clearances to the surrounding walls shown in the figure are only meant for reference. A more
compact installation (back to back) may well be possible and should be discussed with Hitachi. Please always
leave enough room for the key cover to be opened without problems in order to connect wires to the control
terminals.
The ambient temperature should be in the range of -10°C to 50°C. At a temperature of 40~50°C the carrier
frequency has to be reduced to 2kHz, the output current must be kept below 80% of the rated current, and the
top cover (see figure below) has to be removed. Higher ambient temperature causes shorter inverter life. So if
there is hot equipment in the vicinity of the inverter, keep it away from the inverter as far as possible.
If the inverter is to be installed in a cabinet, ambient temperature is considered to be the temperature
prevailing withing this cabinet. Fans have to be provided if necessary so that ambient temperature remains
within the limits specified above.
For safety reasons the digital operator must be closed and not be opened during inverter operation. The end
application must be in accordance with the BS EN 60204-1 standard.
approx. 10cm
approx.
12cm
Inverter
approx. 10cm
The inverter must be installed vertically
(do not install it on the floor or horizontally)
Top cover
Air flow
The mounting base must be a non-
flammable material (e.g. metal)
Ventilation holes
(on either side)
4-1
Chapter 4 – Installation
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