User Manual
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Siemens RXB24.1 – Room controller CM2N3874en_08
Building Technologies 2016-05-18
Identification number
(unique serial number)
ID in bar-code form, code 128
Protection standard
Temperature range
(0 … 50 °C)
Serial No.
Test date, series
(Z, A, B, C…)
Observe notes
in this document
Activated application
Location
010025CA9900
060215B 513
3874Z04
Options for use of the labeling fields “Appl.” and “Loc.”:
Handwritten identification of the location and the activated application group.
All terminals are detachable plug-in screw-terminals. To avoid incorrect wiring,
terminals which can be connected to AC 230 V are physically separate from the
other terminals.
Warning!
The cable restraints on the housing base must be
used for the connections to terminals 19 … 21
(AC 230 V). The conductors must be secured with
cable ties (see diagram).
Ensure that the power is off before inserting or
removing plug-in terminals connected to a
mains voltage.
3873J04
The RXB24.1 controller communicates with other devices via the following
interfaces:
• PPS2 interface (proprietary) for the exchange of data with the room units
• KNX / EIB bus (terminals CE+ and CE-) for communication with:
− PX/KNX interface (to DESIGO INSIGHT)
− Interface OCI700 / OCI702 (to Synco)
− Other DESIGO RXB controllers
− KNX / EIB compatible field devices (e.g. temperature sensor)
Label
Note
Connection
terminals
Communication