Siemens Sinamics s120 Commissioning Manual page 166

Commissioning
3.10 Commissioning of power units connected in parallel
You need to specify the number of infeeds to be connected in parallel in the appropriate field
(maximum 4 infeeds are permitted).
Active Line Modules can also be used in the master/slave mode. The master/slave function
can be selected as an option in this window (for further information, refer to the Chapter
"Master/slave function for infeeds" in the SINAMICS S120 Function Manual Drive Functions).
The line filter is offered as an option, depending on the infeed. An Active Interface Module
(AIM) with integrated line filter is required to operate an "Active Line Module" (ALM). We
recommend external line filters to operate the "Basic Line Module" (BLM) and "Smart Line
Module" (SLM) Line Modules.
166
STARTER Commissioning Manual
Commissioning Manual, (IH1), 07/2016, 6SL3097-4AF00-0BP5