Siemens Desigo RXB Technical Manual page 74

Ordering
Compatibility
Mechanical design
Opening the housing
Index and
manufacturing date
2/8
Siemens
Building Technologies
When ordering, please specify the quantity, product name and type code.
Example:
30 Room units
The room unit can be used with all controllers incorporating a PPS2 room unit interface
(e.g. DESIGO RX and DESIGO PX
1) The QAX34.3 room unit only works with Address 1. If it is used with a PXC... automation station, the
display shows the state requested by the user, rather than the actual state.
The room unit is suitable for mounting on a recessed conduit box. The cable entry is
through the rear.
For surface mounting, with the cable entry at the top or bottom, accessory ARG70.2
is required.
Basically the unit comprises the housing and the mounting plate.
These can be locked together and released by a snap-mechanism.
The mounting plate incorporates the screw terminals.
The housing accommodates a printed circuit board, room temperature sensor element,
bias switches for setpoint adjustment and selection of the operating mode and fan
speed, and the LCD panel.
The housing and mounting plate are plastic.
QAX34.3 – Room unit with PPS2 interface
QAX34.3
1)
).
1
2
CM2N1640en_04
30 Jun 2009