Parallel Connection Of Motor Modules - Siemens Sinamics S120 Function Manual

Function modules
7.11 Parallel connection of power units
7.11.1.4

Parallel connection of Motor Modules

Up to four Motor Modules operating in parallel can supply a single motor in vector control.
The motor can have electrically isolated winding systems or a common winding system. The
type of winding system defines the following requirements:
● The required decoupling measures at the outputs of the Motor Modules connected in
● The possible modulation systems 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.
Winding systems for motors in SINAMICS parallel connections
The following are admissible:
1. Motors with electrically isolated winding systems (multi-winding system) in which the
2. Motors with a common winding system (single winding system) in which all parallel
The following are inadmissible:
1. Motors with separate winding systems on the line side which have a common, internal
Below are two examples illustrating the possible configuration of parallel connections of
motors with a two-winding system or single winding system.
410
parallel
individual systems are not electrically coupled.
windings in the motor are interconnected in such a way that from the outside they look
like a single winding system.
neutral.
Function Manual, (FH1), 01/2012, 6SL3097-4AB00-0BP2
Drive functions