Pilz PSS Series Installation Manual page 21

Electromagnetic Compatibility (EMC)
Check
During installation:
Earthed parts connected
correctly?
Are the cables laid
correctly?
Are the shields connected
correctly?
Equipotential bonding
carried out?
Are inductive loads
switched?
24 VDC power supply?
3-8
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Action
Most important are the
connections to base module
racks, racking bars, earth
conductors and earth bars.
Inactive metal parts should be
connected over a wide surface
area and earthed to a central point.
With insulated metal: Remove
insulation or use special
contact fixings. Protect the
connection from corrosion. Connect
the cabinet doors to the body of
the cabinet using earthing straps.
Separate cables into groups.
Supply and signal leads
must be laid separately.
Use shielded cables for analogue
and data leads.
Use metallic plugs.
Connect cable shields to earth bar
at point of entry to cabinet.
Connect cable shields over a wide
surface area and with low
impedance.
Equipotential bonding cables
should be laid if the installation
extends over a wide area.
Inductive loads not switched by
the PSS 3056 must be wired
with suppression elements.
The power supply must conform to
DIN VDE 0551 / EN 60 742 and
DIN VDE 0160.
Installation Manual: PSS 3056 Series
Done