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INVERTER INSTALLATION AND PRECAUTIONS



Inverter model



Specification differs by the type. Major differences are shown in the table below.



Conforming to IEC 60721-3-3 3C2/3S2



Applicable for the FR-A820-00340(5.5K) or higher, and the FR-A840-00170(5.5K) or higher.

NOTE

• In this Instruction Manual, the inverter model name consists of the applicable motor capacity and the rated current. (Example) FR-A820-00046(0.4K)



Inverter placement



Installation environment

Before installation, confirm that the following environment conditions are met.



Temperature applicable for a short time, e.g. in transit.



For the 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

or less for the FR-A840-04320(160K) or higher.



Surrounding air temperature is a temperature measured at a measurement position in an enclosure.



Ambient temperature is a temperature outside an enclosure.



For the amount of heat generated by the inverter unit, refer to the Instruction Manual (Detailed).

Type

Monitor output

Initial setting

Built-in

EMC filter

Control logic

Rated

frequency

Pr.19 Base frequency voltage



(terminal FM equipped model)

Terminal FM: pulse train output
Terminal AM: analog voltage output (0 to



10 VDC)

OFF

Sink logic

60 Hz

9999



(same as the power supply voltage)



(terminal CA equipped model)

Terminal CA: analog current output (0 to 20 mADC)
Terminal AM: analog voltage output (0 to



10 VDC)

Source logic

50 Hz

8888



(95% of the power supply voltage)

Installation on the enclosure

• Install the inverter on a strong surface securely with screws.
• 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 wall surface.
• When encasing multiple inverters, install them in parallel as a cooling measure.
• When designing or building an enclosure for the inverter, carefully consider influencing factors such as heat generation

of the contained devices and the operating environment.



For the FR-A820-00250(3.7K) or lower and FR-A840-00126(3.7K) or lower, allow 1 cm or more clearance.



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 (0 cm clearance) is available.



There needs to be a space of at least 30 cm in front of the inverter to replace the cooling fan of the FR-A840-04320(160K)
or higher.



Refer to the Instruction Manual (Detailed) for fan replacement.

Item

Description

Surrounding air
temperature



LD, ND (initial setting), HD

-10 to +50°C (non-freezing)

Enclosure

SLD

-10 to +40°C (non-freezing)

Ambient humidity

With circuit board coating (conforming to IEC 60721-3-3 3C2/3S2): 95% RH or less (non-
condensing),
Without circuit board coating: 90% 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

2500 m or lower



Vibration

5.9 m/s



or less at 10 to 55 Hz (directions of X, Y, Z axes)