Siemens SINAMICS S120 Equipment Manual page 155

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: 6SL3730-7T.41.-.BC0), 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
S120 Cabinet Modules Equipment Manual
Manual, (GH5), 10/2008, A5E00427098A
point (i.e. different supply systems are not permitted).
modules connected in parallel.
Cabinet Modules
5.4 Active Line Modules
155