User Manual

ManualsBrandsSiemens ManualsOperator unitsEU Declaration of Conformity QAX84.1/PPS2

A2N1649en_04

2015

-12-23

Building Technologies

649

1649p04

Desigo

™ RX, Desigo™ PX

Flush-mounting room

unit with PPS2

interface

QAX84.1/PPS2

For use with:

– Equipment from the RXC, RXB, RXL, and RXA (PPS2) ranges

– Desigo PX automation stations

–

Devices

with

PPS2

interface

• Measurement of the room temperature

• Buttons for adjustment of the room temperature setpoint

• Buttons for selection of the control mode (

/ Auto) and for manual

control of the fan in fan-coil systems (up to 3 speeds)

• LCD for display of room temperature and control mode

• PPS2 interface to the controller

Use

The flush-mounting PPS2 room unit is used in rooms controlled by an individual room

control system, to measure the room temperature and for operation of the room control-

ler. The functions of the LCD display are determined by the controller.

If manual fan-speed control is enabled in the controller, the room unit can be used to

operate a fan-coil system.

The room unit is also suitable for use in conjunction with a Desigo PX automation sta-

tion

1) If a QAX32.1, QAX33.1, QAX34.1 or QAX84.1 room unit is used in conjunction with a PXC... auto-

mation station, the display shows the state requested by the user, rather than the actual state.

Summary of content (8 pages)

PAGE 1
1649p04 649 Desigo™ RX, Desigo™ PX Flush-mounting room QAX84.
PAGE 2
Type summary • QAX84.1/PPS2 PPS2 room unit, flush-mounting (Items supplied: plug-in operator unit, bus coupling unit, Siemens DELTA-line bezel in titanium white) Ordering When ordering, please specify the quantity, product name and type code. Example: 30 PPS2 room units, flush-mounting QAX84.1/PPS2 Compatibility The flush-mounting PPS2 room unit can be used with all controllers with a PPS2 room unit interface (e.g. Desigo RX and Desigo PX).
PAGE 3
Room temperature display and control sequence indicator (heating or cooling) Operator controls and display panel Current control mode or current fan speed Auto Buttons to select control mode and fan speed 1649z02 Buttons for adjustment of the room temperature setpoint Note Keys to select control mode and fan speed The controller determines the actual functions of the buttons and display (based on the selected application and the associated parameters).
PAGE 4
LCD panel The following display options are possible in normal operation (actual options determined by the controller). For details refer to the application description for the controller range concerned. Display field (examples): Description Room temperature in °C (resolution 0.5 °C) Room temperature in °F (resolution 1.
PAGE 5
Mounting instructions • The room unit is suitable for flush mounting • Recommended height: 1.
PAGE 6
Operating notes During commissioning and operation, the LCD panel displays error messages: Display Description C: No communication with controller for over 64 s 02: Firmware version (e.g. Version 2.0) Room temperature sensor outside range 0 … 40 °C Type of error D S Controller has not yet added the room unit to its list of members (during controller start-up) Controller does not recognize room unit type D Initial value, after room unit is switched on and before a controller has sent a value.
PAGE 7
Cable connections WAGO plug-in connection terminals Wire diameter 0.6 … 0.8 mm or 1.
PAGE 8
Dimensions 71 55 80 Room unit 1649M01 Dimensions in mm Auto 55 80 71 55 1649M02 7 17,5 30,5 Operator unit Auto 55 15,5 1,5 55 DELTA-line bezel 80 1649M03 28,5 55 80 7 71 1649M04 78 Bus coupling unit 1 71 Published by: Siemens Switzerland Ltd. Building Technologies Division International Headquarters Gubelstrasse 22 6301 Zug Switzerland Tel. +41 41-724 24 24 www.siemens.