Siemens SINAMICS S120 Function Manual page 331

6-pulse parallel connection of Active Line Modules
Figure 7-29
6-pulse, redundant parallel connection of Active Line Modules with multiple Control Units
For a description of parallel connections of multiple Active Line Modules under the control of
separate Control Units, please refer to section " Master/slave function for infeeds".
12-pulse parallel connection of Active Line Modules
The 12-pulse parallel connection can operate in master-slave mode (section "Master/slave
function for infeeds").
Modules with different ratings can be included in the connection (as in the case of 6-pulse
master-slave operation).
Parallel connection of Motor Modules
Up to four Motor Modules operating in parallel can supply a single motor in vector control
mode. The motor can have electrically isolated winding systems or a common winding
system. The type of winding system defines
● the decoupling measures to be implemented at the outputs of the parallel-connected
● the modulation systems which may be used to generate pulse patterns.
In conjunction with the type of infeed, the modulation systems define the maximum
attainable output voltage or the maximum attainable motor voltage.
Drive functions
Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5
Parallel connection ALM 6-pulse single
Motor Modules
7.11 Parallel connection of power units
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+
Function modules
331