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Application planning
4.8 EMC-compliant installation
4.8.5
EMC-compliant cable routing
Overview
Power cables with a high interference level significantly influence the electromagnetic fields in
a system or a machine.
Routing cables to be compliant with EMC is a requirement for disturbance-free operation of a
system or machine.
Description
The converter connection cables have different interference levels:
• Cables with a high level of interference:
– Cable between the line filter and converter
– Motor connection cables
– Cable at the converter DC link connection
• Cables with a low level of interference:
– Cable between the line and line filter
– Signal and data cables
EMC-compliant cable routing complies with the following requirements:
• All cables are as short as possible.
• All cables are routed close to the mounting plates or control cabinet frames.
• Power cables with a high level of interference are routed so that there is a minimum clearance
of 20 cm to cables with a low level of interference.
If the minimum clearance of 20 cm is not possible, insert separating metal panels between
the cables with a high level of interference and those with a low level of interference. The
separating metal panels are connected to the mounting plate to establish a good electrical
connection.
• Cables with a high level of interference and cables with a low level of interference only cross
over at right angles.
• All signal and data cables enter the control cabinet from only one side, from below, for
example.
• Signal and data cables, as well as the associated equipotential bonding cables, are routed in
parallel and close to one another.
• Any unused conductors of signal and data cables are grounded at both ends.
• Incoming and outgoing individual conductors that are not shielded are twisted with one
another.
Alternatively, incoming and outgoing conductors are routed in parallel, but close to one
another.
94
SINAMICS S200 PROFINET servo drive system with SIMOTICS S-1FL2
Operating Instructions, 11/2023, FW V6.3, A5E51646752B AB
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