Arrangement Of Components And Equipment; General Information; Current Carrying Capacity Of The Dc Link Busbar - Siemens SINAMICS S120 Equipment Manual

8.4

Arrangement of components and equipment

8.4.1

General information

The arrangement of the components and equipment takes account of
● Space requirements
● Cable routing
● Bending radiuses of the connection cables
● Cooling
● EMC
Components are usually located centrally in a cabinet.
The necessary mounting and installation clearances above an below the components can,
under certain circumstances, exceed the minimum clearances specified in the product
documentation.
8.4.2

Current carrying capacity of the DC link busbar

The current carrying capacity of the DC link busbar must be observed for the configuring and
the construction of the drive group.
The maximum current carrying capacity of the DC link busbar differs depending on the width
of the power units.
● For power units from 3 A to 60 A (max. width 150 mm) and DC link components (Braking,
● If the DC link busbar of 3 A to 60 A power sections (max. 150 mm wide) is replaced by a
● For power units from 85 A to 200 A (200 / 300 mm width), the DC link busbar can be
If the current carrying capacity of the DC link busbar is exceeded, two solutions are possible:
Either the installation of the drive line-up with infeed from left and right (center infeed; see
below) or the use of another Line Module.
Note
The following examples are based on the concurrent use and loading of the Motor Modules
with the rated output current of the Motor Modules. The current values are taken from the
Equipment Manual for Booksize Power Units or the NC61 catalog.
Booksize Power Units
Equipment Manual, (GH2), 07/2007, 6SL3097-2AC00-0BP5
MOTION-CONNECT lines, see D21.1 catalog
Capacitor and Control Supply Module), the DC link busbar can be loaded with 100 A.
reinforced DC link busbar, the DC link busbar can carry a current of 200 A.
loaded with 200 A.
Cabinet Design and EMC Booksize
8.4 Arrangement of components and equipment
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