Siemens Desigo RXB Technical Manual page 51

Connection terminals
RXB21.1
Caution
Tool socket
Siemens
Building Technologies
1 2 3 4 5 6 7
T
AC 230V
19 19 21 21
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 %
Relay outputs
Q13 25 Common feed for Q14, Q24 and Q34
Q14 26 Normally-open contact, max. AC 250 V, 5 (4) A (Stage 1)
Q24 27 Normally-open contact, max. AC 250 V, 5 (4) A (Stage 2)
Q34 28 Normally-open contact, max. AC 250 V, 5 (4) A (Stage 3)

Observe the technical data for the relay outputs: max. AC 250 V, 5 (4) A

Local installation regulations must be observed.
Proprietary RJ45-type tool socket
1 KNX / EIB data cable (CE+)
1 2 3 4 5 6 7 8
2 KNX / EIB data cable (CE–)
3 Not used
4 Not used
RXB21.1, RXB22.1 Room controllers
8 9 10 11 12 13 14 15 16
2 1 4
QAX...
M M
AC 230V 5(4)A
25 26 27 28
17 18
EIB / KNX
3
5 +12VDC
6 RxD
7 PPS2 (CP+) / TxD
8 PPS2 (CP–)
CM2N3873en_06
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02 Apr 2010