Installation Enclosure design
FR-E700SC EC 2 - 7
2.4 Enclosure design
When an inverter enclosure is to be designed and manufactured, heat generated by contained equip-
ment, etc., the environment of an operating place, and others must be fully considered to determine
the enclosure structure, size and equipment layout. The inverter unit uses many semiconductor de-
vices. To ensure higher reliability and long period of operation, operate the inverter in the ambient en-
vironment that completely satisfies the equipment specifications.
2.4.1 Inverter installation environment
As the inverter installation environment should satisfy the standard specifications indicated in the fol-
lowing table, operation in any place that does not meet these conditions not only deteriorates the
performance and life of the inverter, but also causes a failure. Refer to the following points and take
adequate measures.
Temperature
The permissible ambient temperature of the inverter FR-E700SC is between ā10 and +50Ā°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 meas-
ures so that the ambient temperature of the inverter falls within the specified range.
ā Measures against high temperature
ā Use a forced ventilation system or similar cooling system. (Refer to page 2-10.)
ā Install the enclosure in an air-conditioned electrical chamber.
āBlock direct sunlight.
ā Provide a shield or similar plate to avoid direct exposure to the radiated heat and wind of a
heat source.
ā Ventilate the area around the enclosure well.
ā Measures against low temperature
ā Provide a space heater in the enclosure.
ā Do not power off the inverter. (Keep the start signal of the inverter off.)
ā Sudden temperature changes
ā Select an installation place where temperature does not change suddenly.
ā Avoid installing the inverter near the air outlet of an air conditioner.
ā If temperature changes are caused by opening/closing of a door, install the inverter away from
the door.
Item Specification
Ambient temperature ā10Ā°C to +50Ā°C (non-freezing)
Ambient humidity 90% RH or less (non-condensing)
Atmosphere Free from corrosive and explosive gases, dust and dirt
Maximum altitude 1000m or less
Vibration 5.9m/sĀ² or less (0,6 g) at 10 to 55Hz (directions of X, Y, Z axes)
Tab. 2-1: Environmental standard specifications of inverter
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