Siemens SIMOTION D4x5-2 Commissioning And Hardware Installation Manual page 59

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 4-3
Note
Ground potential and housing (PE) for the SIMOTION D4x5-2 and CX32-2 are connected
internally with low impedance.
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, 03/2018, A5E33441636B
4.2 Protective conductor connection and potential equalization
Protective conductor connection without equipotential bonding
Connecting
⑨
must be
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