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3. Installation
3.3 Installation
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3.3.2 Prevention of Foreign Matter Entry
(1) The inside of each unit is densely mounted, and is sensitive to dust, etc. Always design a sealed
structure electric cabinet, and execute the following measures.
Carry out dust-proofing and oil-proofing measures such as sealing the cable inlets with packing.
Be particularly careful that outside air does not enter the electric cabinet through heat radiation
holes, etc.
Seal all gaps.
Securely install the door packing.
Always install packing around any back cover (when present).
Oil can easily accumulate in screw holes on top of the electric cabinet and penetrate into the
electric cabinet. Therefore, carry out special countermeasures such as using oil-proof packing.
Cable
Metal fittings
Packing
Cable inlet (example)
(2) After installing each unit, avoid any tool machining in the area surrounding those units. Cutting
chips, etc., may adhere to electronic parts and cause a failure.
(3) Design the electric cabinet so the internal temperature will rise no more than 10°C (target value
5°C or less) over the ambient temperature, and will stay within the temperature conditions of the
personal computer, NC Card, etc. (Refer to "3.3.3 Heat Radiation Countermeasures" for details.)
Use a panel cooler when required.
(4) The personal computer display unit may not operate normally due to external magnetic fields.
Separate magnetism producing sources (transformers, fans, magnetic switches, solenoid relays,
magnet stands, magnetic workpieces, power lines flowing a large current, etc.) from the display
unit by 200mm or more.
Note that the magnetism produced by these magnetism producing sources differs individually, and
will also differ according to the installation direction, etc. Therefore, the display unit may not
operate properly even when separated by 200mm or more from these sources. When determining
the layout of magnetism producing sources, also consider the direction, etc., of the magnetism
produced, and finally confirm by actual operation of the machine.
Make sure that conductive foreign matter (screws, metal pieces, etc.) and flammable
foreign matter (oil, etc.) does not enter inside any unit.
CAUTION