Siemens SINAMICS DCM Manual page 593

Descriptions of functions
10.30 Expanding the SINAMICS DCM to include a second CUD
10.30 Expanding the SINAMICS DCM to include a second CUD
General information
As an option, the SINAMICS DC MASTER can be equipped with a second CUD by inserting
it in the right-hand slot. This option is only available in conjunction with option G00
(Advanced CUD in left-hand slot). See also Chapter "Ordering information for options and
accessories".
For the installation of the second CUD, see
Chapters Installing a second CUD (Page 90) and Replacing the CUD (Page 667).
NOTICE
Installing or removing a module is only permitted when the SINAMICS DC MASTER is in
the voltage-free state.
Properties
The right-hand CUD is used for system-specific extension of the SINAMICS DC MASTER
functions.
It enables the following function extensions:
● Doubling the number of hardware inputs and outputs for applications requiring more
analog inputs, analog outputs, digital inputs, or digital outputs
● Additional computing capacity for free function blocks and, above all, for application-
specific function diagrams generated using DCC
Connection between the left-hand and right-hand CUD:
16 BICO connections can be established in each direction.
This involves using the parallel-connection interface. Function diagrams FP9350, FP9352,
and FP9355 show the settings and BICO interconnection options for the parallel-connection
interface.
The hardware connection for the two CUDs is established inside the unit; there is no need
for an external connection using connector X165 or X166. It is also possible to use the
parallel-connection interface for controlling a power unit-side configuration in which several
SINAMICS DC MASTER units are connected in parallel.
Parameter assignment
The parameters for the right-hand CUD are assigned using the AOP30 or the STARTER
commissioning tool. The Basic Operator Panel BOP20 cannot be used for this purpose.
● Assigning parameters for the right-hand CUD using the AOP30:
The AOP30 must be connected to connector X178 (RS485 interface) or X179 (RS232
interface) on the right-hand CUD.
● Assigning parameters for the right-hand CUD using STARTER:
STARTER views the right-hand CUD as a separate PROFIBUS node.
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Operating Instructions, 02.2015, A5E34763375/RS-AA/001
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SINAMICS DCM DC Converter