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Siemens
QAX32.1 – Room unit with PPS2 interface
CA2N1641en_03
Building Technologies
2015-12-23
Standards, directives and
approvals
Product standard
EN 60730-1
Automatic electrical controls for
household and similar use
Electromagnetic compatibility (Applications) For use in residential, commerce, light-
industrial and industrial environments
EU conformity (CE)
CA2T1741xx *)
UL certification (US)
UL916,
http://ul.com/database
RCM-conformity (EMC)
A5W00005055 *)
EAC conformity
Eurasia conformity
Environmental
compatibility Product environmental declaration (contains
data on RoHS compliance, materials compo-
sition, packaging, environmental benefit,
disposal)
A6V10736277_en--_a *)
Dimensions
See “Dimensions”
Color
Housing front, dial
NCS S 0502-G,
≈
RAL 9003 signal white
Housing, base unit, rocker switch
RAL 7035 light grey
Weight
Excluding packaging
0.12 kg
*) The documents can be downloaded from
http://siemens.com/bt/download
.
Connection
terminals
The tool socket on the room unit provides access to the connected individual room
controller via the commissioning and service tool or the service terminal.
The bus cable (Terminals 3 and 4) is therefore looped to the tool socket (Pins 1 and 2).
The bus cable is not affected by the room unit.
For connection of a service terminal, the PPS2 interface (Terminals 1 and 2) is also
connected to the tool socket.
8 7
6
5
4
3
2
1
C–
C+
CP
–
CP
+
80085
PPS2 interface, supply voltage
CP+
1
Device supply, Data PPS2 (pos.)
CP–
2
Device supply, Data PPS2 (neg.)
Bus connection (looped to tool socket)
C+
3
With L
ON
W
ORKS
® bus (Desigo RXC): CLA
C–
4
With L
ON
W
ORKS
® bus (Desigo RXC): CLB
5 ... 8
Not used
Standard type RJ45 tool socket.
1
320
6Z
01
2 3 4 5 6 7 8
With L
ON
W
ORKS
® bus (Desigo RXC): CLA
With L
ON
W
ORKS
® bus (Desigo RXC): CLB
Not used
Not used
Not used
Not used
CP+
Data PPS2
CP–
Data PPS2
Terminal layout
Tool socket
