2-1
DB Unit
Top
Bottom 100mm
Right
Left
100m m
50mm
or more
50mm
or more
2 Installation and Connection
2-1 Operating environment
Install the DB unit in the environment shown in Table 2-1-1.
Table 2-1-1 Operating environment
Item Specifications
Location Indoor
Ambient
temperature
–10 to +50℃
Relative
humidity
5 to 95% (no condensation)
Atmosphere
Without dust, direct sunlight, corrosive gas, oil mist and vapor, water drop
Not including too much of salt
Without condensation by sharp temperature change
Altitude
1,000m or less
(When exceeding 1,000m, decrease the inverter output in accordance with Instruction
Manual of the inverter.)
Vibration 3.0mm at 2 to 9Hz, 9.8m/s
2
at 10 to 20Hz, 4.9m/s
2
at 20 to 55Hz, 1.0m/s
2
at 55 to 200Hz
2-2 Installation Method
① Securly fasten the DB unit in an upright position on a solid structure
such that the characters of the label is facing the front. Do not turn the
DB unit
upside down or install in a horizontal position.
② As heat is generated during DB unit operation, the spaces shown
in Fig. 2-2-1 are required to ensure sufficient cooling pass. As
heat radiates upward, do not install the DB unit beneath a device
sensitive to heat.
③ As the cooling fins may reach a temperature of 90℃ during DB
unit operation, ensure that the material of the attaching face at
back of the DB unit can withstand this temperature.
Fig. 2-2-1
WARNING
Install the DB uint on nonflammable material such as metal.
Fire may result.
④ When installing the DB unit in a control panel, consider sufficient ventilation to prevent ambient
temperature of the DB unit from exceeding the specified value. Do not install in a small tightly closed box.
⑤ If installing two or more inverters or DB units in the same device or control panel, arrange them horizontally
to minimize the effect of heat. If they must be installed vertically, place isolation plates between them to
minimize the effect of heat.
CAUTION
Ensure that the DB unit and cooling fins are kept free of foreign matter such as lint,
paper dust, small chips of wood or metal, and dust.
Fire or accident may result.
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