Siemens QAX30.1 Manual de usuario

CA2N1741

en_03

2015

-12-23

Building Technologies

1741

QAX30.1

QAX31.1

Desigo

™ RX

Room units with PPS2

interface

QAX30.1

QAX31.1

for use with:

– devices of the ranges Desigo RXC, RXB, RXL, and RXA (PPS2)

–Desigo PX Automation stations

–devices with a PPS2 interface

•Room temperature measurement

•Room temperature setpoint adjuster

•PPS2 interface to controller

•Socket for commissioning and service tool or service terminal

Use

The room units are used in rooms controlled by an individual room control system, to

measure the room temperature, and, in the case of the QAX31.1, to adjust the room

temperature setpoint.

They can also be used in conjunction with a Desigo PXC… automation station

The room units incorporate 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. LONWORKS® bus) to the connected individual room controller.

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Ordering

When ordering, please specify the quantity, product name and type code.

Example:

30 Room units QAX30.1

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, 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

80081

80084

Socket for the commissioning

and service tool or service

terminal

80169A

Dial for stepless adjustment of the setpoint

01884

Address plugs inside the housing

Operator controls

and indication

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Disposal

The device is classified as waste electronic equipment in terms of the European D

rective

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.

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 plugs)

A twisted-pair cable is required for the connection to the controller. Desigo RX uses

four-core cables, Desigo PX uses two-core cables (see the respective installation

guides). Screening is not required.

Mounting

•The room unit is suitable for wall-mounting and for mounting on a recessed conduit

box.

•Do not mount in recesses, shelves, behind curtains or doors, or above or near heat

sources.

•Avoid exposure to direct sunlight or draughts.

•The electrical wiring conduit must be sealed where it joins the room unit, to prevent

the occurrence of draughts in the conduit which could affect the sensor.

•The specified ambient conditions must be complied with.

•Mounting instructions are printed on the room unit packaging.

•A mounting kit is included with the unit.

Installation notes

Local installation regulations must be observed.

The room unit is not protected against connection to AC 230 V.

Commissioning notes

After an interrupt of the PPS2 interface the communication will only be re-established

when the connected controller polls the PPS2 addresses. The duration of the corre-

sponding cycle is:

RXA: 10 sec; RXB, RXL and RXC: 3 min; PX: 30 sec.

STOP

Note!

Response on start-up

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Technical data

Supply

voltage

Operating voltage range

DC 12...15 V

(SELV)

DC 12…15 V class 2 (US)

The room unit receives its power from the connected controller, via the PPS2 interface

Power consumption (from controller)

Max. 0.10 VA

Function data

Temperature sensor

Measuring element

NTC resistor

Measuring range

0 ... 40 °C

Response time

≤8 min

Accuracy (5 ... 30 °C)

±0.5 K

Accuracy (25 °C)

±0.25 K

Setpoint correction

Correction range (determined by controller)

max. ±12 K (default ±3 K)

Accuracy over full correction range

10 %

Interfaces

Type of interface between controller and room unit

PPS2 (point

-to-point interface,

Version 2)

Baud rate

4.8 kbit/s

Cable connections

Connection terminals (screw terminals)

Stranded or solid conductors

0.8 ... 2.5 mm

Single cable length controller

– Room unit

See Installation guidelines:

Desigo

RXC: CA110334,

Desigo

RXB & RXL: CM110381

Desigo

RXA: CA2Z3884

Desigo PX: CA110396

-core or 4-core, twisted pairs,

unscreened

Connecting cable for service tool

Off-the-shelf, max. 3 m

Protection data

Housing protection

IP 30 to EN 60529

Protection class

III to EN 60730-1

Ambient conditions

IEC 721

Operation

Transport

Ambient air conditions

Class 3K5

Class 2K3

Temperature

0 ... 50 °C

– 25 ... 70 °C

Humidity

< 85 %rH

< 95 %rH

Mechanical conditions

Class 3M2

Class 2M2

Standards, directives

and approvals

Product standard

EN 60730-1

Automatic electrical controls for hous

hold and similar use

Electromagnetic compatibility (Applications)

For use in

residential, commerce, light-

industrial and industrial environments

EU conformity (CE)

CA2T1741xx *)

UL certification (US)

UL916, http://ul.com/database

RCM-conformity (EMC)

A5W00005055 *)

EAC conformity

Eurasia conformity

Environmental

comp

atibility

Product environmental declaration (co

ntains data on

RoHS compliance, materials composition, packaging,

environmental benefit, disposal)

A6V10736277_en

--_a *)

Dimensions

See “Dimensions”

Color

Housing front, dial

NCS S 0502-G, ≈RAL 9003 signal white

Housing, base unit

RAL 7035 light grey

Weight

Excluding packaging

0.12 kg

*) The documents can be downloaded from http://siemens.com/bt/download.

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Connection terminals

The tool socket on the room unit provides access to the connected individual room

controller via the commissioning and service tool or the service terminal.

The bus cable (Terminals 3 and 4) is therefore looped to the tool socket (Pins 1 and 2).

The bus cable is not affected by the room unit.

For connection of a service terminal, the PPS2 interface (Terminals 1 and 2) is also

connected to the tool socket.

87654321

C–

C+

CP–

CP+

80085

PPS2 interface, supply voltage

CP+ 1 Device supply, Data PPS2 (pos.)

CP– 2 Device supply, Data PPS2 (neg.)

Bus connection (looped to tool socket)

C+ 3 With LONWORKS® bus (Desigo RXC): CLA

C– 4 With LONWORKS® bus (Desigo RXC): CLB

5 ... 8 Not used

Standard type RJ45 tool socket.

3206Z01

2 3 4 5 6 7 8

With LONWORKS® bus (Desigo RXC): CLA

With LONWORKS® bus (Desigo RXC): CLB

Not used

CP+ Data PPS2

CP– Data PPS2

Connection diagram (Example: RXC)

The following example shows the room unit connected to a Desigo RXC room

controller:

1741A03

PPS2

Tool

7 8 1 2

4321

C–

C+

CP–

CP+

CP–

CLA

CLB

PPS2

LonWorks® Bus

= Twisted pair

R1 Room unit QAX30.1

N1 Room controller RXC...

A Connection for RXT10 commissioning and service tool

B Connection for service terminal with PPS2 interface

Dimensions

Terminal layout

Tool socket

All dimensions in mm

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Siemens QAX30.1, QAX31.1 – Room units with PPS2 interface CA2N1741en_02

Building Technologies 2015-12-23

9,5

4,2

80089

100

Published by:

Siemens Switzerland Ltd.

Building Technologies Division

International Headquarters

Gubelstrasse 22

6301 Zug

Switzerland

el. +41 41-724 24 24

www.siemens.com/buildingtechnologies

Delivery and technical specifications subject to change

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