6
Electrical installation
Connection of PROFINET IO
Manual – PROFINET IO Interfaces, Field Distributors
68
6.8.2
Routing the Ethernet cable
NOTICE
In case of fluctuations in the ground potential, a compensating current may flow via
the bilaterally connected shield that is also connected to the protective earth (PE).
Make sure you supply adequate equipotential bonding in accordance with relevant
VDE regulations in such a case.
Only use shielded cables and connection elements that meet the requirements of cat-
egory 5, class D according to IEC 11801 edition 2.0.
The following measures ensure the best possible EMC properties:
•
Manually tighten the mounting screws on the connectors, modules
and equipotential bonding conductors.
•
Use only connectors with a metal housing or a metalized housing.
•
Route signal and bus cables in separate cable ducts. Do not route them parallel to
power cables (motor leads).
•
Use metallic, grounded cable racks in industrial environments.
•
Route the signal cable and the corresponding equipotential bonding close to each
other using the shortest possible route.
•
Avoid using plug connectors to extend bus cables.
•
Route the bus cables closely along existing grounding surfaces.
22870857/EN – 12/2016