Installation of the inverter
18
INSTALLATION AND WIRING
2.3 Installation of the inverter
An inverter unit uses many semiconductor devices. To ensure higher reliability and long period of operation, operate the
inverter in the ambient environment that completely satisfies the equipment specifications.
2.3.1 Inverter installation environment
The following table lists the standard specifications of the inverter installation environment. Using the inverter in an
environment that does not satisfy the conditions deteriorates the performance, shortens the life, and causes a failure. Refer to
the following points, and take adequate measures.
Standard environmental specifications of the inverter
Temperature applicable for a short time, e.g. in transit.
For installation at an altitude above 1000 m, consider a 3% reduction in the rated current per 500 m increase in altitude.
2.9 m/s
2
or less for the FR-A846-01800(55K) or higher.
Temperature
The permissible ambient temperature of the inverter is between -10°C and +40°C. Always operate the inverter within this
temperature range. Operation outside this range will considerably shorten the service lives of the semiconductors, parts,
capacitors and others. Take the following measures to keep the ambient temperature of the inverter within the specified range.
(a) Measures against high temperature
• Ventilate the room.
• Install the inverter in an air-conditioned electric chamber.
• Block direct sunlight.
• Provide a shield or similar plate to avoid direct exposure to the radiated heat and wind of a heat source.
• Ventilate the area around the inverter well.
(b) Measures against low temperature
• Provide a heater around the inverter.
• Do not power OFF the inverter. (Keep the start signal of the inverter OFF.)
(c) Sudden temperature changes
• Select an installation place where temperature does not change suddenly.
• Avoid installing the inverter near the air outlet of an air conditioner.
• If temperature changes are caused by opening/closing of a door, install the inverter away from the door.
• For the amount of heat generated by the inverter unit, refer to page 20.
Item Description
Ambient temperature -10 to +40°C (non-freezing)
Ambient humidity 95% RH or less (non-condensing)
Storage temperature -20 to +65°C
Atmosphere Indoors (free from corrosive gas, flammable gas, oil mist, dust and dirt)
Altitude Maximum 2500 m
Vibration
5.9 m/s
2
or less at 10 to 55 Hz (in X, Y, and Z directions)
Measurement
position
Measurement
position
Inverter
5 cm 5 cm
5 cm
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