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Siemens
QAX32.1 – Room unit with PPS2 interface
CA2N1641en_03
Building Technologies
2015-12-23
Ordering
When ordering, please specify the quantity, product name and type code.
Example:
30
Room units
QAX32.1
Equipment combinations
The room unit is suitable for use in conjunction with all controllers which incorporate a
PPS2 room unit interface (e.g. Desigo RX, Desigo PX).
Mechanical design
The room unit is designed for surface mounting (with knock-outs for cable entry from
the top or bottom) or for mounting on a recessed conduit box with the cables connected
from the rear.
The unit comprises a housing and base unit, connected by releasable snap-fittings.
The base unit accommodates the screw terminals which have an integrated terminal
strip.
The housing accommodates a printed circuit board, room temperature sensor element,
setpoint adjuster, rocker switch for mode selection, plug-in connectors and a socket for
the commissioning and service tool or service terminal.
Both the housing and base are made of plastic.
Base unit
Housing
80082
80084
Socket for the commissioning
and service tool or service
terminal
80167A
Dial for stepless adjustment of the setpoint
LEDs to indicate control mode
Rocker switch for mode selection
The controller control mode can be selected on the basis of occupancy, using the
rocker switch on the room unit (press left or right arrow). The current control mode is
indicated by a LED.
Position Control mode
1)
The controller operates at the setback setpoints (at night, or when room is
unoccupied or occupied intermittently)
Auto
Comfort mode (room occupied)
1)
For details of these functions, refer to the application description for the relevant controller range.
Operator controls
and indication
Rocker switch for mode
selection
