Specifications

2
INSTALLATION AND INSTRUCTIONS
1.2 Installation of the inverter
1.3 Environment
Before installation, check that the environment meets following specifications:
*4
Temperature applicable for a short time, e.g. in transit.
*5
For the installation at an altitude above 1,000m up to 2,500m, derate the rated current 3% per 500 m.
*6
Surrounding air temperature is a temperature measured at a measurement position in an enclosure. Ambient temperature is a
temperature outside an enclosure.
*7
2.9m/s
2
or less for the FR-A840-04320(160K) or higher
 Install the inverter on a strong surface securely with bolts.
 Leave enough clearances and take cooling measures.
 Avoid places where the inverter is subjected to direct sunlight, high temperature and high humidity.
 Install the inverter on a nonflammable surface.
 When encasing multiple inverters, install them in parallel as a cooling measure.
*1
For the FR-A820-00250(3.7K) or lower, the FR-A840-00126(3.7K) or lower, and the FR-A846-00126(3.7K) or lower allow 1cm or more clearance.
*2
When using the FR-A820-01250(22K) or lower and FR-A840-00620(22K) or lower at the surrounding air temperature of 40°C or less (30°C or less for the
SLD rated inverter), side-by-side installation (0cm clearance) is available.
*3
For replacing the cooling fan of the FR-A840-04320(160K) or higher, and of the FR-A842 models, 30cm of space is necessary in front of the inverter.
Refer to the Instruction Manual for fan replacement.
Surrounding air
temperature
*6
LD, ND (initial setting), HD ratings: -10°C to +50°C (non-freezing)
SLD rating: -10°C to +40°C (non-freezing)
Enclosure
IP55 compatible models: -10°C to +40°C (non-freezing)
Ambient humidity
With circuit board coating, IP55 compatible models: 95% RH or less (non-condensing),
Without circuit board coating: 90% RH or less (non-condensing)
Storage temperature
−20°C to +65°C
*4
Atmosphere
Indoors (No corrosive and flammable gases, oil mist, dust and dirt)
Altitude
Maximum 2,500 m above sea level
*5
Vibration
5.9m/s² or less
*7
at 10 to 55Hz (directions of X, Y, Z axes)
Fix six positions for the FR-A840-
04320(160K) or higher and for
the FR-A8
42 models (separated
converter type).
FR-A820-03160(55K) or lower,
FR-A840-01800(55K) or lower
FR-A846
FR-A820-03800(75K) or lower,
FR-A840-02160(75K) or lower
FR-A842
 10cm  20cm
 10cm 5cm
*1, *2
 10cm
 10cm  20cm
 5cm
*1, *3
Inverter
 5cm
*1, *2
Vertical
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Clearances (front view) Clearances (side view)
5 cm5 cm
5 cm
Inverter
x = Measurement position