Connecting To Functional Ground - Siemens SIRIUS M200D Manual

Mounting / connection
4.1 Mounting
4.1.5

Connecting to functional ground

The motor starter must be connected to functional ground. The connection to functional
ground is required to discharge interference and ensure EMC resistance. Unlike the
protective conductor, functional ground does not offer protection against electric shock. It is
crucial for the EMC of the motor starter and must be laid separately.
The contact plate at the fixing point on the bottom right is connected to functional ground
within the device. This connection must be connected to the ground potential with as little
resistance as possible.
Figure 4-5
If you do not install the motor starter on a grounded, conductive base, you have to establish
a connection with the ground potential (grounding cable with cable lug, spring washer, and
plain washer).
98
Connection for functional ground
M200D PROFIBUS/PROFINET
Manual, 08/2014, A5E01577426A/RS-AA/004