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OUTLINE
Installation of the inverter and enclosure design
1.4.3 Inverter placement
(1) Installation of the inverter
Enclosure surface mounting
Remove the front cover and wiring cover to fix the inverter to the surface.
(2) Clearances around inverter
(3) Inverter mounting orientation
Mount the inverter on a wall as specified. Do not mount it horizontally or any other way.
(4) Above inverter
Heat is blown up from inside the inverter by the small fan built in the unit. Any equipment placed above the inverter should be
heat resistant.
NOTE
When encasing multiple inverters, install them in parallel as a
cooling measure.
Install the inverter vertically.
To ensure ease of heat dissipation and maintenance, leave at least the shown clearances around the inverter. At least the
following clearances are required under the inverter as a wiring space, and above the inverter as a heat dissipation space.
Front cover
Front cover
Wiring cover
Wiring cover
FR-D720-070 or more
FR-D740-012 or more
FR-D720S-070, 100
FR-D720-008 to 042
FR-D720S-008 to 042
Vertical
Refer to the clearances below.
Surrounding air temperature and humidity
Measurement
position
Measurement
position
Inverter
5cm
(1.97inches)
5cm
(1.97inches)
5cm (1.97inches)
Humidity: 90% RH maximum
Clearances (side)
1cm
(0.39
inches)
or more
*
Inverter
Clearances (front)
10cm
(3.94inches)
or more
10cm
(3.94inches)
or more
1cm
(0.39inches)
or more*
1cm
(0.39inches)
or more*
* 5cm
(1.97inches)
or more for
the FR-D720-238 or more
and FR-D740-120 or more
Leave enough clearances and take
cooling measures.
Temperature: -10 C to +50 C
(14 F to 122 F)
* When using the inverters at the surrounding air
temperature of 40 C (
104 F)
or less, the inverters can
be installed without any clearance between them
(0cm (
0inch)
clearance).
When surrounding air temperature exceeds 40 C
(
104 F)
, clearances between the inverters should be
1cm
(0.39inches)
or more (5cm
(1.97inches)
or more
for the FR-D720-238 or more and FR-D740-120 or
more).