Siemens SINAMICS S120 Equipment Manual page 107

Parallel connection of Active Line Modules to increase power rating
Up to four Active Line Modules with the same power rating can be connected in parallel in
order to increase power.
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.
● With multiple infeeds, power must be supplied to the systems from a common infeed
point (i.e. different supply systems are not permitted).
● A derating factor of 5% must be taken into consideration, regardless of the number of
modules connected in parallel.
Note
Mixed operation is not possible
It is only possible to connect identical power units in parallel if all power units have the same
hardware version. Mixed operation between a power unit with Control Interface Module
(Article No. 6SL33xx-xxxxx–xAA7) and a power unit with Control Interface Board (Article No.
6SL33xx-xxxxx–xAA0) is not possible.
Water-cooled chassis power units for common cooling circuits
Manual, 08/2017, 6SL3097-4AM10-0BP0
Active Line Modules
5.1 Description
107