Siemens SINAMICS DCM Operating Instructions Manual page 453

Communication
Note
Before activating the parallel interface (i.e. before setting p51800 > 0), a unique station
address must be set at p51806 on all SINAMICS DCMs. Otherwise, the parallel interface will
not work property.
Remedy in this case: Switch the electronics power supply off and then on.
● In the particular topology, communication between all converters is established via the
● The parallel interface allows a maximum of 16 nodes to communicate.
● The units are connected using 8-core shielded patch cables, type UTP CAT5 in acc. with
● The parallel interface also enables any BICOs (that can be parameterized by the user) to
● For additional details on how units are connected in parallel, please refer to function
Control
 For all of the topologies, a SINAMICS DCM is used as the master converter. The other
 The control commands - switch-on/stop, operating enable, fast stop etc. are fed to the
SINAMICS DCM DC Converter
Operating Instructions, 1.2012, C98130-A7066-A1-05-7619
parallel interface. The CUDs of all converters should be connected with one another.
ANSI/EIA/TIA 568, such as those that are used to network PCs. A standard 5 m long
cable can be directly purchased from Siemens (Order No.: 6RY1707-0AA08). (n-1)
cables are required to connect n units. The bus termination must be activated at the units
at the start of the bus and at the end of the bus (p51805=1).
be exchanged between nodes. See function diagrams 9352 and 9355. Exchanging data
in this way is not required for closed-loop control of the firing pulses or for generating
them, and is available for the user to make use of in any way he or she wishes.
diagrams 9350, 9352, and 9355.
converters are called slave converters.
master converter for all topologies.
At the slave converters, terminals 12 and 13 must be permanently connected to terminal
9. If, in spite of this, a control command is entered at a slave converter, then it has the
following consequences:
OFF1 Has no effect, as long as n<nmin has not been reached, then the
current is reduced to zero at the slave and the slave goes into
operating state o7.0 or o7.1
OFF2 The current is reduced to zero at the slave, then the slave goes into
operating state o10.1 or o10.2
OFF3 no effect, as long as n<nmin has not been reached, then the
current is reduced to zero at the slave and the slave goes into
operating state o9.1 or 9.2
E-STOP The current is reduced to zero at the slave, then the slave goes into
operating state o10.3
Operating enable The current is reduced to zero at the slave, then the slave goes into
operating state o1.1 or o1.
Descriptions of functions
10.25 Connecting units in parallel and in series
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