Data Sheet for Product
11/16
Siemens RXB21.1, RXB22.1 Room controllers CM2N3873en_11
Building Technologies 2016-05-18
Reference documentation
Building Services Management Manual – Fundamental principles, and ... – Applications
Zentralverband Elektrotechnik
- und Elektronikindustrie e.V. (ZVEH) (Central association for the
electrical and electronic engineering industry), Stresemannallee 19D
-60596 Frankfurt a. M, Germany.
Connection terminals
CP –
CP +
CE
–
CE +
3873A08
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
12 4 3
QAX...
T
M
25 26 27 28
Q13
Q14
AC 230V
Y3
G
Y4
M
Q24
Q34
AC 230V 5(4)A
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 %
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.
1
3206Z01
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–)
RXB21.1
Caution
Tool socket
Proprietary RJ45-type
tool socket