Additional Installation Tip s
Metal cabinet Metal cabinet
Terminal or connector Terminal or connector
EMC cable gland
Plastic cable gland
Shielded cable
Short distance
Cable clamp
in steel
Shielded cable
1.
Use an EMC cable gland or regular plastic cable gland, remove the outer jacket
andconnecttheshieldtotheinstallation plate with a 360° metal cable clamp.
2.
Place the 24 V DC and communications cabling in one cable trunk/cable duct
and 230/380 V AC in another. If the cables need to be crossed, cross them at
90° only. Avoid combining the cabling for stronger 24 V DC outputs with
the communication cabling.
Ferrite cores that are snapped onto the shielded cabling may remove minor
disturbances. Large ferrite pieces that are snapped onto unshielded cabling and
where the wires g o 2-4 times around the cores are approximately 5-25 times more
efficient.
7.4 AmbientTemperature
The maximum ambient temperature for the operator
panel is provided in the
specifications. The ambient temperature refers
to the temperature in the device
cabinet which cools the operator panel’s elect
ronics.
Operator
panel
Power
Power
Power
30 °C outside
To p
50 °C inside
Bottom
40 °C inside
Middle
45 °C inside
Airflow
Axial fan
120 x 120 mm
Inmostcases,theambienttemperaturefortheoperatorpanelissignificantly
higher than the device cabinet’s ambient temperature.
If the cabinet is tall and there are a number of heat-generating devices, the
temperature at the top of the cabinet is considerably higher than the temperature
BeijerElectronics, MAEN330
23
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