Equipotential Bonding - Siemens Sinamics G110M Operating Instructions Manual

● In the case of both signal and data cables, the cable shields should be connected by
means of suitable EMC glands. The cables must connect the shields to the shield
bonding options for cables and the unit housing respectively with excellent electrical
conductivity and a large contact area.
● Use only metallic or metallized connector housings for shielded data cables (for example,
PROFIBUS cables).
4.3.2.3

Equipotential bonding

Equipotential bonding within the drive system has to be established by connecting all
electrical and mechanical drive components (transformer, motor and driven machine) to the
grounding system. These connections are established by means of standard heavy-power
PE cables, which do not need to have any special high-frequency properties. In addition to
these connections, the converter (as the source of the high-frequency interference) and all
other components in each drive system (motor and driven machine) must be interconnected
with respect to a high-frequency point of view. For this purpose cables with good high-
frequency properties must be used.
Grounding and high-frequency equipotential bonding measures
The following figure illustrates all grounding and high-frequency equipotential bonding
measures using an example with the SINAMICS G110M.
Figure 4-9
Distributed converter for SIMOGEAR geared motors
Operating Instructions, 09/2017, FW V4.7.9, A5E31298649B AH
Grounding and high-frequency equipotential bonding measures in the drive system and
in the plant
Installation
4.3 Electrical Installation
67