Chapter 5 Installation
5–6
5-2 Installation of interface unit
5-2-1 Environmental conditions
Environment Conditions
Ambient temperature
0°C to +55°C (with no freezing)
Ambient humidity 90% RH or less (with no dew condensation)
Storage temperature
–20°C to +65°C (with no freezing)
Storage humidity 90% RH or less (with no dew condensation)
Atmosphere Indoors (Where unit is not subject to direct sunlight)
With no corrosive gas, combustible gas, oil mist or dust
Altitude 1000m or less above sea level
Vibration 5.9m/sec
2
(0.6G) or less
5-2-2 Installation direction
Install so that the front of the interface unit is visible and the terminal block comes to the bottom.
5-2-3 Prevention of entering of foreign matter
Treat the cabinet with the following items.
• Make sure that the cable inlet is dust and oil proof by using packing, etc.
• Make sure that the external air does not enter inside by using head radiating holes, etc.
• Close all clearances.
• Securely install door packing.
• If there is a rear cover, always apply packing.
• Oil will tend to accumulate on the top. Take special measures such as oil-proofing the top so that
oil does not enter the cabinet from the screw holds.
• After installing each unit, avoid machining in the periphery. If cutting chips, etc., stick onto the
electronic parts, trouble may occur.
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