Siemens SINAMICS S120 Manual page 139

Parallel connection of Basic Line Modules to increase power rating
A pair of Basic Line Modules is available for creating drive line-ups with more power. These
modules can be operated on a common Line Connection Module and are arranged to the
right and left of the Line Connection Module. The power connections on the Basic Line
Module on the left of the Line Connection Module are a mirror image (order number with C in
the next-to-last position, example: 6SL3730-1Tx41-xBC3), which produces a very compact
design for the line supply infeed.
The following rules must be observed when connecting Basic Line Modules in parallel:
● Up to 4 identical Basic Line Modules can be connected in parallel.
● A common Control Unit is required whenever the modules are connected in parallel.
● Special Line Connection Modules are available for connecting the modules in parallel.
● With multiple infeeds, power must be supplied to the systems from a common infeed
● A derating factor of 7.5% must be taken into consideration, regardless of the number of
Cabinet Modules
Manual, (GH5), 05/2010, A5E03263538A
point (i.e. the modules cannot be operated on different supplies).
modules connected in parallel.
Cabinet Modules
5.2 Basic Line Modules
139