Siemens Desigo RXB Technical Manual page 73

s
Application
As a room unit:
As a tool:
CM2N1640en_04
30 Jun 2009
DESIGO RX
Room unit with PPS2
interface
For use with: – Equipment from the RXC, RXB, RXL and RXA (PPS2) ranges
– DESIGO PX automation stations
– Devices with a PPS2 interface

Measurement of the room temperature

Bias switch for adjustment of the room temperature setpoint

Bias switch for selection of the operating mode ( /Auto) and for manual
control of the fan in fan-coil systems (up to 3 speeds)

LCD for display of room temperature and operating mode

PPS2 interface to the controller

Tool function for parameter setting and testing
The room unit is used in rooms controlled by an individual room control system, to
measure the room temperature and for operation of a room controller. The functions of
the LCD display are determined by the controller. If manual fan-speed control is
enabled, the room unit can be used to operate a fan-coil system.
It is also suitable for use in conjunction with a DESIGO PX automation station
In conjunction with the RXB / RXL controllers (FC-10 and later, CC-02) the QAX34.3
room unit can also be used for parameter-setting and for the wiring test
For details refer to the technical manual, CM110389 (RXB), CM110789 (RXL).
1) In the QAX34.3 room unit the address (fixed to 1) cannot be changed.
If it is used with a PXC... automation station, the display shows the state requested
by the user (see page 3), rather than the actual state.
2) Wiring test only available with devices from index D (inside the housing, se page 2).
1
QAX34.3
1)
2)
of RXB/RXL controllers
2)
.
Building Technologies
640
1)
.