CA2N1642en_02
30 Jun 2009
Building Technologies
1
642
DESIGO™ RX
Room unit with PPS2
interface
QAX33.1
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
Room temperature setpoint adjuster
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
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 a room controller. The QAX33.1 is typi-
cally used in conjunction with a fan-coil system (for fan control).
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
ONWORKS® 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.
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