Siemens SINAMICS S120 Manual page 152

Line Modules
3.4 Active Line Modules
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 four 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
● A derating factor of 5% must be taken into consideration, regardless of the number of
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
(order number 6SL33xx-xxxxx–xAA3) and a power unit with Control Interface Board (order
number 6SL33xx-xxxxx–xAA0) is not possible.
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point (i.e. different supply systems are not permitted).
modules connected in parallel.
Manual, (GH3), 01/2013, 6SL3097-4AE00-0BP3
Chassis power units