Siemens Desigo RXB, Technical Manual, Page: 67 / 476

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Siemens RXB24.1 – Room controller CM2N3874en_04
Building Technologies 02 Apr 2010
Connection terminals
CP – CP + CE
–
CE +
38
7
4A
08
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
M D1 GND D2 Y1 G Y2 B1
EIB / KNX
1 2 4 3
QAX...
T
M
AC 230V
Y3 G Y4
M
19 19 21
N L N
21
L
CE
–
CE + N.C
.
Measured value input
B1 1 Measured value input for LG-Ni 1000 sensors
M 2 Measured value input ground
Signal inputs
D1 4 Signal input
GND 5 Signal ground
D2 6 Signal input
Triac outputs
Y1 7 AC 24 V, 0.5 A switching output
G 8 AC 24 V actuator supply
Y2 9 AC 24 V, 0.5 A switching output
Y3 10 AC 24 V, 0.5 A switching output
G 11 AC 24 V actuator supply
Y4 12 AC 24 V, 0.5 A switching output
Room unit
CP– 13 PPS2 ground
CP+ 14 PPS2 data
CE+ 15 KNX / EIB data cable
CE– 16
KNX / EIB data cable
KNX / EIB bus (plug-in connection)
CE+ 17 KNX / EIB data cable
CE– 18 KNX / EIB data cable
Power supply
N 19 Neutral conductor
R 21 Phase conductor AC 230 V +/- 10 %

Local installation regulations must be observed.
Proprietary RJ45-type tool socket
1
32
06Z
01
2 3 4 5 6 7 8
1 KNX / EIB data cable (CE+)
2 KNX / EIB data cable (CE–)
3 Not
used
4 Not used
5 +12VDC
6 RxD
7 PPS2 (CP+) / TxD
8 PPS2
(CP–)
RXB24.1
Caution
Tool socket