Siemens SINAMICS G120 Operating Instructions Manual page 58
Low voltage inverters
built-in units with cu250s-2 control units and
encoder evaluation
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Also See for SINAMICS G120:
- List manual (1256 pages) ,
- Manual (732 pages) ,
- Operating instructions manual (550 pages)
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Installing
4.1 EMC-compliant installation of a machine or system
Cable routing inside the cabinet
● Route the power cables with a high level of interference so that there is a minimum
clearance of 25 cm to cables with a low level of interference.
If the minimum clearance of 25 cm is not possible, insert separating metal sheets between
the cables with a high level of interference and cables with a low level of interference.
Connect these separating metal sheets 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 may only
cross over at right angles:
● Keep all of the cables as short as possible.
● Route all of the cables close to the mounting plates or cabinet frames.
● Route signal and data cables - as well as the associated equipotential bonding cables -
parallel and close to one another.
● Twist incoming and outgoing unshielded individual conductors.
Alternatively, you can route incoming and outgoing conductors in parallel, but close to one
another.
● Ground any unused conductors of signal and data cables at both ends.
● Signal and data cables must only enter the cabinet from one side, e.g. from below.
● Using shielded cables for the following connections:
– Cable between the inverter and line filter
– Cable between the inverter and output reactor or sine-wave filter
Figure 4-3
56
Routing inverter cables inside and outside a control cabinet
Converter with the CU250S-2 Control Units
Operating Instructions, 04/2018, FW V4.7 SP10, A5E31759476B AG
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