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S5-115F Manual
3.10
Checklist for the Installation of Programmable Controllers in Conformity
with EMC Guidelines
Table 3-5. Checklist for the Installation of Programmable Controllers
EMC Measures
Connection of inactive metal parts
Specially check the connections on:
•
Racks
•
Supporting bars
•
Shielding buses and protective conductor bars
Have all inactive metal parts been connected and grounded with
large surface contact and a low impedance?
Is there a sufficient connection to the ground
electrode/protective conductor system?
Have insulating layers on enamelled and anodized surfaces been
removed or have the connections been implemented with special
contact washers?
Have the joints been protected against corrosion, e.g. by means of
grease?
Have the cubicle doors been connected to the cubicle body via
grounding strips?
Wiring arrangement
Cabling divided into cable groups?
Supply lines (230 to 400 V) and signal cables run in separate ducts
or bundles?
Equipotential bonding
In the case of a distributed configuration, check the installation of
the equipotential bonding conductor
Cable shielding
Have metal connector sockets been used everywhere?
Have all analog and data lines been shielded?
Have cable shields been applied to the shield bus or protective
conductor bar?
Have cable shields been fixed with a large surface contact and a
low impedance by means of cable clamps?
Have cable shields been connected at both ends where this is
possible?
Inductive circuits
Have contactor coils that are not energized via SIMATIC contacts
been provided with arc suppression elements?
EWA 4NEB 811 6148-02
in Conformity with EMC Guidelines
Installation Guidelines
Notes
(Section 3.5)
(Section 3.6)
(Section 3.7)
(Section 3.8)
(Section 3.9)
3-49
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