Mitsubishi Electric FR-F820-00046 Instruction Manual page 41

Fr-f800 series
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• 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.
Allow clearance.
*1
For the FR-F820-00250(5.5K) or lower and FR-F840-00126(5.5K) or lower, allow 1 cm or more clearance.
*2
When using the FR-F820-01250(30K) or lower and FR-F840-00620(30K) 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.
*3
For replacing the cooling fan of the FR-F840-04320(185K) or higher, 30 cm of space is necessary in front of the inverter. Refer to
fan replacement.
 Installation orientation of the inverter
Install the inverter on a wall as specified. Do not mount it horizontally or in any other way.
 Above the 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.
 Arrangement of multiple inverters
When multiple inverters are placed in the same enclosure, generally arrange them horizontally as shown in the figure (a). When
it is inevitable to arrange them vertically to minimize space, take such measures as to provide guides between the inverters
since heat generated in the inverters in bottom row can increase the temperatures in the inverters in top row, causing inverter
failures.
When installing multiple inverters, fully take measures to prevent the surrounding air temperature of the inverter from being
higher than the permissible value by providing ventilation or increasing the enclosure size.
Inverter
Inverter
Enclosure
(a) Horizontal arrangement
Arrangement of multiple inverters
40
2. INSTALLATION AND WIRING
2.3 Installation of the inverter and enclosure design
FR-F820-03160(75K) or lower,
FR-F840-01800(75K) or lower
5 cm
*1,*2
or more
Vertical
Inverter
Inverter
Guide
Guide
Guide
Inverter
Inverter
Enclosure
(b) Vertical arrangement
Clearances (front)
FR-F820-03800(90K) or higher,
FR-F840-02160(90K) or higher
10 cm
or more
5 cm
10 cm
*1,*2
or more
or more
10 cm
or more
Clearances (side)
20 cm
or more
5 cm
or more
10 cm
*1,*3
or more
Inverter
20 cm
or more
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