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2. INSTALLATION AND WIRING
2.3 Installation of the inverter and enclosure design
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2.3 Installation of the inverter and enclosure design
When designing or manufacturing an inverter enclosure, determine the structure, size, and device layout of the enclosure by
fully considering the conditions such as heat generation of the contained devices and the operating environment. 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
*1 Temperature applicable for a short time, e.g. in transit.
*2 For the installation at an altitude above 1000 m, consider a 3% reduction in the rated current per 500 m increase in altitude.
*3 2.9 m/s
2
or less for the FR-F860-02890 or higher.
*4 Surrounding air temperature is a temperature measured at a measurement position in an enclosure.
Ambient temperature is a temperature outside an enclosure.
*5 The FR-F860-00680 or higher inverter is intended for installation in an enclosure.
Temperature
For the FR-F860-00090 or lower, the permissible surrounding air temperature of the inverter is between -10°C and +40°C (LD
rating) or between -10°C and +30°C (SLD rating). For the FR-F860-00170 to 01080, the permissible surrounding air
temperature of the inverter is between -10°C and +40°C. For the FR-F860-01440 or higher, the permissible surrounding air
temperature of the inverter is between -10°C and +50°C (LD rating) or between -10°C and +40°C (SLD rating). 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 surrounding air temperature of the
inverter within the specified range.
Measures against high temperature
• Use a forced ventilation system or similar cooling system. (Refer to page 34.)
• Install the enclosure 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 enclosure well.
Measures against low temperature
• Provide a space heater in the enclosure.
• Do not power OFF the inverter. (Keep the start signal of the inverter OFF.)
Item Description
Surrounding
air temperature
*4
FR-F860-00090 or lower -10°C to +40°C (non-freezing) (LD rating)
-10°C to +30°C (non-freezing) (SLD rating)
Enclosure
*5
FR-F860-00170 to 01080 -10°C to +40°C (non-freezing)
FR-F860-01440 or higher -10°C to +50°C (non-freezing) (LD rating)
-10°C to +40°C (non-freezing) (SLD rating)
Ambient humidity 95% RH or less (non-condensing)
Storage temperature
-20°C to +65°C
*1
Atmosphere Indoors (free from corrosive gas, flammable gas, oil mist, dust and dirt)
Altitude
Maximum 2500 m.
*2
Vibration
5.9 m/s
2
or less
*3
at 10 to 55 Hz (directions of X, Y, Z axes)
Measurement
position
Measurement
position
Inverter
5 cm 5 cm
5 cm
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