User Manual

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Siemens QAX39.1 – Universal setpoint adjuster CA2N1646de_04
Building Technologies 2015-12-23
Mechanical design
Multi-part plastic housing, comprising:
• Electronic printed circuit board with potentiometer and 3 connection terminals
• Mounting plate with 3 adjustable end-stops
• Dial
• Scale plate
• Cover plate (transparent)
0
A
2
4
6
8
C
E
1
3
5
7
1646A01
9
B
D
F
Address switch inside the housing.
It allows setting the address in cases where
several room units are connected to one
controller.
The setpoint adjuster is delivered with address 1.
Engineering notes
The device receives its power from the connected controller via the PPS2 interface
(extra low voltage). Only one room unit may be connected to a RX… room controller.
A maximum of 5 room units may be connected to a PXC… automation station (they are
identified by different settings of their address switch)
A twisted-pair cable is required for the connection to the controller (see the respective
installation guides). Screening is not required.
Disposal
The device is classified as waste electronic equipment in terms of the European
Directive 2012/19/EU
(WEEE) and should not be disposed of as unsorted municipal
waste.
The relevant national legal rules are to be adhered to.
Regarding disposal, use the systems setup for collecting electronic waste.
Observe all local and applicable laws.
Address switch