Installation Precautions - Omron KM50 Communications Manual

Installation Precautions

● Maintaining Product Life
Use the KM50 within the following temperature and humidity ranges.
Temperature: −10 to 55°C (with no icing or condensation), Humidity: 25% to 85%
When the KM50 is installed in a control panel, ensure that the temperature around the KM50
(not the temperature around the panel) does not exceed 55°C.
Some of the electronic components used in the KM50 have limited service lives. The life of
these components depends on the ambient temperature. The service lives will be shorter at
higher temperatures and longer at lower temperatures. The life of the KM50 can thus be
extended by lowering the internal temperature. If more than one KM50-E Power Monitor is
mounted side by side or top to bottom, the heat generated by the Power Monitors will cause
the internal temperatures to increase, shortening the lives of the Power Monitors. To prevent
the internal temperature from increasing, forced cooling, such as fans to cool the Power
Monitors, must be considered.
● Noise Countermeasures
To prevent inductive noise, wire the lines connected to the terminal block on the KM50
separately from power lines carrying high voltages or currents. Do not wire in parallel with or
in the same cable as power lines. Other measures for reducing noise include running lines in
separate ducts and using shields.
Attach surge absorbers or noise filters to nearby equipment that generates noise (particularly
equipment with a high inductance component, such as motors, transformers, or magnetic
coils).
Install the product as far as possible away from devices with strong high-frequency noise
(such a high-frequency welders or sewing machines) or devices that generate surge.
● Waterproof Performance
The KM50 provides the following degree of protection. Any parts for which a degree of
protection is not given or for which the degree of protection is given as IP@0 are not
waterproof to any degree.
Front panel: IP66 (with enclosed Waterproof Packing), Rear case: IP20, Terminal section:
IP00
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