Switchover Of The Power Unit Topology - Option S50 - Siemens SINAMICS DCM Operating Instructions Manual

Figure 10-63 12-pulse series connection: Controlled + uncontrolled rectifier, block diagram
10.25.7

Switchover of the power unit topology - option S50

Ordering information for option S50, see Chapter 2
Note
SINAMICS DCM can only be retrofitted with option S50 in the manufacturers factory.
Note
You can find detailed information on interconnecting, dimensioning and parameterizing in the
application document "12-pulse applications". Support is also available through our
Technical Support organization (for contact address, see the Preface).
For specific applications, there is a requirement that during operation it must be possible to
switchover between two different power unit topologies (e.g. between a 12-pulse parallel
connection and a 12-pulse series connection) using a control command.
SINAMICS DCM converter with option S50 provide the appropriate control. External
contactors are used to actually switchover the power unit topology.
Requirements for using this functionality
● All participating SINAMICS DCM units must be must be equipped with option S50
● "n+m" operation is not permissible
● The "parallel switching master" function must remain at the same SINAMICS DCM for
SINAMICS DCM DC Converter
Operating Instructions, 1.2012, C98130-A7066-A1-05-7619
both power unit topologies
Descriptions of functions
10.25 Connecting units in parallel and in series
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