Electromagnetic Compatibility (EMC)
3-6 Installation Manual: PSS 3056 Series
Miscellaneous
Connecting the programming device
The programming device requires a mains connection in each cabinet. The
mains connection must be connected to the same distributor as the earth
conductor for the cabinet.
Lighting inside the cabinet
Use low interference panel lighting for inside the control cabinet.
NOTICE
Fluorescent lamps should be avoided as they create interference fields.
However, if it is absolutely necessary to use fluorescent lamps, the
guidelines listed below should be followed:
• Place shield screening over the lamp.
• Used screened cable.
• Install a metal-sheathed switch.
• Use a mains filter or screened power supply cable.
Installing within an enclosure or wall-mounting
Care must be taken to avoid interference when installing the unit within an
enclosure or wall-mounting:
• Shielding, earth conductor bars and the base module rack should be
attached to metal parts in order to divert any coupled interference on to
large metal areas. For wall-mounting we recommend that the overall
potential surfaces are made of steel.
• For varnished or anodised metal parts you should use special contact
plates or remove the protective coating.
• Install an earth bar for the cable screens.
• The earth bar can also be used as the ground conductor bar.
• Connect the earth bar to the mounting plate over a wide surface area
and with low impedance.
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