User Manual
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Siemens QAX50, QAX51 – Flexible room unit CA2N1648en_05
Building Technologies 2015-12-23
Use
The flexible room unit is used in conjunction with the Desigo RXC room automation
system for measurement of the room temperature and for integrated operation of
HVAC, lighting and blinds. The HVAC functions are identical to those of the QAX34.1
room unit.
The functions for operating lighting and blinds can be configured flexibly to match the
requirements in the room. This involves fitting the required rocker switches and down-
loading the associated application software (referred to further on as the “application”).
The various applications are described individually in the Desigo RXC Applications
library, CA2A3810 (V1) or CA110300 (V2).
The flexible room unit is delivered in its unconfigured state (see “Ordering”).
The room units must be fitted with buttons/rocker switches and loaded with the applica-
tion at the commissioning stage. The latter process is carried out with the RXT10 com-
missioning and service tool (see “Commissioning notes”).
Type summary
The flexible room unit is available in two basic versions, which differ only in the number
and type of buttons/rocker switches supplied.
QAX50
+
2 x
4 x
3 x
4 x
1 x
2 x
80067 A
QAX51
3 x
+
2 x
1 x
4 x
1 x
3 x
80068 A
Type QAX50 is used for all applications involving on/off lighting control.
Type QAX51 is required for dimmer control.
Product No. Stock number Designation
QAX50.5/C000
S55623-H114
Flexible room unit (on/off lighting control)
QAX51.5/C000
S55623-H115
Flexible room unit (dimmer control)