Dc Busbar; General Information; Connecting The Dc Busbar When Cabinet Units Are Installed Side-By-Side - Siemens SINAMICS S120 Equipment Manual

Electrical installation
4.5 Connections
4.5.2

DC busbar

4.5.2.1

General information

Availability
The DC busbar is included as a standard item in the following S120 Cabinet Modules:
● Basic Line Module
● Smart Line Module
● Active Line Module
● Motor Module in chassis format
● Booksize Base Cabinet
● Central Braking Module
Description
The DC busbar is used to connect Line Modules with Motor Modules; the connection is
made using prefabricated busbar sets with different current-conducting capacities. The DC
busbar is available as an option in other modules (Line Connection Module, Auxiliary Power
Supply Module).
4.5.2.2

Connecting the DC busbar when cabinet units are installed side-by-side

Note
The procedure described below uses a DC busbar 1 x 60 x 10 mm (option M80) as an
example, but applies to all other DC busbar variants as well.
For the other available variants, the number of jumpers used on each busbar for connecting
the DC busbar is as follows:
• 1 jumper for each DC busbar for 1 x nn x 10 busbars (options M80 to M82)
• 2 jumpers for each DC busbar for 2 x nn x 10 busbars (options M83 to M85)
• 3 jumpers for each DC busbar for 3 x nn x 10 busbars (options M86 and M87)
A connection jumper ("1" in the picture below) on the right side of the DC busbar in the
cabinet is used to connect the DC busbar across several Cabinet Modules. This connection
jumper is already integrated in every DC busbar of the Cabinet Modules.
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S120 Cabinet Modules Equipment Manual
Manual, (GH5), 10/2008, A5E00427098A