Installation - Siemens SINAMICS S120 Manual

Cabinet design
6.6 Electrical connection
NOTICE
Component damage caused by excessively low current load capability of the DC link
busbars
The DC link busbars of the individual components have different current carrying capacities
(current ratings). If the current flowing through a DC link busbar is higher than the current
specified for the busbar, the component will heat up and may sustain damage as a result of
overheating.
• When configuring the drive lineup, carefully observe the current load capabilities of the
6.6.2.2

Installation

Always connect the lower DC link busbars first, then the upper DC link busbars and finally
the 24 V busbars.
Required tools:
● Slotted screwdriver (1 x 5.5 mm) for releasing the protective cover
● Screwdriver Torx T20 for the DC link screws
● Pliers for removing the side covers of the DC link protective covers
Installation steps
Note
To install the DC link busbars on modules in booksize C/D-type format, M4x20 mm screws
are used at the right and left-hand ends of the busbars.
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individual components. If required, replace the DC link bridge or reduce the load.
Power Units in Booksize C/D-Type Format
Manual, 12/2018, 6SL3097-5AC20-0BP0