User Documentation
2053260000/05/201528
Planning
For the earth connection of the PROFINET devices, use copper cable
with a corresponding cross-section (> 2.5 mm²). As a rule, the earthing cable has
a green-and-yellow insulation. In some countries the green-and-yellow marking is
a regulation (in the USA only green).
The functional earth is identied by the following symbol:
g
2.9.3 Equipotential bonding
Equipotential bonding ensures that the earth potential is equal throughout
the system. This means no compensating currents ow over the shielding of
the PROFINET cable. Use copper cable or galvanised earthing strips for the
equipotential bonding in the system and between the system parts.
Connect large areas of the equipotential bonding with
the earth terminal or earth bus.
Connect all shields and earthing connections (if any). As
the name indicates, the equipotential bonding ensures
that the potential is equal in all parts of the system. This
prevents compensating currents from owing over the
shielding of the PROFINET cable.