User Manual

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Building Technologies RXC34.1 – Room controller, basic module CA2N3847en_02
12.01.2007
• PPS2 (terminals CP– and CP+):
Interface to the QAX3… room units. (In addition to PPS2, the LonWorks®
bus can also be looped to the tool socket on the room unit.)
• Tool socket (RJ45) on the controller or room unit, for:
− RXT10 commissioning and service tool (LonWorks® bus)
− RXT20.1 service terminal (PPS2)
• PE bus (plug-in connection):
Interface to the extension modules such as the RXC40.1 and RXC41.1.
The diagram below shows the wiring of the LonWorks® bus and PPS2 interface when a
QAX3… room unit is connected. It also shows the options for connecting the RXT10
commissioning and service tool and the RXT20.1 service terminal.
3847A01en
CP– CP+ CLA CLB
CLA CLB
Tool
PPS2
RXC34.1
PPS2
CP– CP+ CLA CLB
PPS2
Tool
RXT10
QAX3...
PPS2
Service terminal
RXT20.1
PPS2
Service terminal
RXT20.1
LonWorks® Bus
RXT10
LonWorks® Bus
LonWorks® Bus
LonWorks® Bus
The yellow service LED shows the current operational status of the controller by means
of different flashing patterns (see the RXT10 user manual, CA110412).
The service pin is used to identify the controller in the commissioning phase.
When the pin is pressed the controller’s identification number is transmitted to the
RXT10 commissioning and service tool.
Disposal
The device includes electrical and electronic components and must not be disposed of
as domestic waste.
Current local legislation must be observed.
Engineering notes
The DESIGO RX installation guide (CA110334) contains the relevant engineering
information for the LonWorks® bus (topology, bus repeaters, bus termination, etc.) and
for the selection and dimensions of connecting cables for the supply voltage and field
devices.
In the case of line topology the length of the spur or stub between the RXC34.1 and the
QAX… room unit is limited to 3 m.
LonWorks® bus
and PPS2
Service LED
Service pin
STOP
Note!