Siemens SIMOTION D4 5-2 Series Commissioning And Hardware Installation Manual page 45

Equipotential bonding
A mounting plate serves simultaneously as an equipotential bonding surface. This means
that no additional equipotential bonding is required within the drive line-up. If a common
bright mounting plate is not available, then equally good equipotential bonding
established using cable cross-sections as listed in the table above or, as a minimum, with
the same conductivity.
Figure 3-3
Communication links
Within the same control cabinet, no equipotential bonding conductor is required for fieldbus
components if they installed as described above.
You have to ensure equipotential bonding for communication connections between remote
components in a system (e.g. devices in different control cabinets) as well as between
buildings or building sections.
If, for example, data cables (PROFIBUS, PROFINET, Ethernet or DRIVE-CLiQ) are routed
through several control cabinets, equipotential bonding must be established with an
equipotential bonding conductor. Install the equipotential bonding conductor together with
the data cable.
SIMOTION D4x5-2
Commissioning and Hardware Installation Manual, 02/2012
Protective conductor connection without equipotential bonding
Connecting
3.2 Safety information for wiring
⑨
must be
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