Siemens SINAMICS S120 Manual page 165

Parallel connection of Active Line Modules to increase power rating
Active Line Modules are available for creating drive line-ups with more power. These
modules can be operated in parallel on a common Line Connection Module and are
arranged to the right and left of the Line Connection Module. The power connections on the
Active Line Module on the left of the Line Connection Module are a mirror image (device
order number with C in the next-to-last position, example: 6SL3730-7Tx41x-xBC3a), which
produces a very compact design for the supply infeed.
The following rules must be observed when connecting Active Line Modules in parallel:
● Up to 4 identical Active 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 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
5.4 Active Line Modules
165