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Note
Control and signal lines must always be connected according to the circuit diagrams supplied
with the unit. Detailed information about connecting the components is given in the
interconnection diagram.
Note
We recommend using shielded cables. Unshielded cables can transfer disturbances to the
control and signal lines and lead to malfunctions in the drive.
Note
To ensure trouble-free operation without interference or disturbances, route the power cables
and signal lines separately. Interference, for example, will result in the device not behaving as
expected.
When connecting and routing power and signal cables, observe the instructions contained in
the "Electromagnetic compatibility" section.
See also
Electromagnetic compatibility (Page 75)
6.2
Electromagnetic compatibility
The following fundamental information and guidelines facilitate compliance with the EMC
directives.
Note
We recommend that EMC is planned for the entire plant.
Cabinet installation
● Connect painted or anodized metal components using contact washers or remove the
● Use unpainted, de-oiled mounting plates.
● Establish a central connection between ground and the protective conductor system (PE
SINAMICS SM120 6SL38855?B
Operating Instructions 12/2015
insulating layer.
protective conductor).
Electrical connection
6.2 Electromagnetic compatibility
75
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