CA2N1645en_02
30 Jun 2009
Building Technologies
1
645
DESIGO™
RX
Room unit with PPS2
interface
QAX34.1
for use with: – devices of the ranges DESIGO RXC, RXB, RXL, and RXA (PPS2)
– DESIGO PX Automation stations
1)
– devices with a PPS2 interface
Room temperature measurement
Rocker switch for adjustment of the room temperature setpoint
Rocker switch for control mode selection (
/ Auto) and manual control of
the fan in fan-coil systems (up to 3 speeds)
PPS2 interface to controller
LCD with room temperature and control mode display
Socket for commissioning and service tool or service terminal
Use
The room unit is used in rooms controlled by an individual room control system, to mea-
sure the room temperature and for operation of the room controller. The functions of the
LCD display are determined by the controller. If manual fan-speed control is enabled,
the room unit is suitable for control of a fan-coil system.
It can also be used in conjunction with a DESIGO PXC… automation station
1)
.
The room unit incorporates a socket for a commissioning and service tool or service
terminal. This tool socket provides access via the PPS2 interface or via a bus system
(e.g. L
ON
W
ORKS
® bus) to the connected individual room controller.
1) If room units QAX32.1, QAX33.1, QAX34.1, or QAX84.1 are used in conjunction with a PXC auto-
mation station, the room unit will show the request of the user and not the effective state.
