Siemens SINAMICS Series Operating Instructions Manual page 603
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Also See for SINAMICS Series:
- Equipment manual (350 pages) ,
- Function manual (102 pages) ,
- Operating instructions manual (100 pages)
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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
parallel interface. The CUDs of all converters should be connected with one another.
● The parallel interface allows a maximum of 16 nodes to communicate.
● The devices are connected using 8-core shielded patch cables, type UTP CAT5
according to 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 (article number: 6RY1707-
0AA08). (n-1) cables are required to connect n devices. The bus termination must be
activated at the units connected at the start of the bus and at the end of the bus
(p51805 = 1).
Note
A patch cable according to TIA568A (European) or TIA568B (American) can be used.
However, both cable ends must be wired according to the same standard (patch cable
= 1:1). A crossover cable is not suitable.
● The parallel interface also enables any BICOs (that can be parameterized by the user) to
be exchanged between nodes. See function block 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 for any purpose.
Remark: For a 12-pulse series connection, it is not permissible that the parallel interface
is used to transfer BICOs, i.e. p51801 = 0 must be set. Failure to comply with this remark
can result in sporadic current peaks.
● For additional details on how devices are connected in parallel, please refer to function
diagrams 9350, 9352, and 9355.
SINAMICS DCM DC Converter
Operating Instructions, 12/2018, A5E34763375A
Descriptions of functions
10.28 Connecting units in parallel and in series
601
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