Siemens DESIGO RXZ90.1 User manual

CA2N1644en
07.2001 Siemens Building Technologies
Building Automation
1644
DESIGO™ RX
Receiver with
PPS2 interface
RXZ90.1
For use with room controllers in the DESIGO RX range,
in conjunction with the QAX90.1 and QAX91.1 wireless room units
•Wireless acquisition of room temperature and setpoint adjustments
•For use only in conjunction with the QAX90.1/QAX91.1 wireless room units
(data sheet CA2N1643)
•Determines the average room temperature from several room units
•PPS2 interface to room controller
•Socket for commissioning and service tool, diagnostic plug or service
terminal
Use
The RXZ90.1 is used for wireless reception of the room temperature (from the
QAX90.1) and the room temperature setpoint (from the QAX91.1), and for
transmission of this information to a room controller. Wireless range indoors: approx.
30m.
Types
RXZ91.1 Receiver with PPS2 interface

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Ordering
When ordering, please specify the quantity, product name and type code.
Example:
20 Receivers with PPS2 interface Type RXZ90.1
Compatibility
The RXZ90.1 receiver, in conjunction with wireless sensors, is suitable for use with all
room controllers with a PPS2 room unit interface (e.g. the DESIGO RX controllers).
System expansion
Up to a maximum of 5 room units may be allocated to one receiver (see
Commissioning and establishing communication). If several room units are used, the
receiver determines the average of the temperature values received. The average
room temperature is then transmitted to the room controller.
In the case of room units with setpoint adjusters (QAX91.1), only one may be
assigned to each receiver. Other room units with setpoint adjusters are treated as
QAX90.1 units (room temperature only).
QAX91.1
QAX90.1
QAX90.1
RXZ90.1
QAX90.1
QAX90.1
00481
868 MHz
Design
The receiver is designed for mounting on walls or ceilings, or for installation in a flush
mounting box. The cables can be connected from the rear, top or bottom after
breaking out the perforated cable entry guide.
Basically the unit comprises the housing and the mounting plate. These can be
snapped together and apart.
The housing accommodates a printed circuit board and a tool socket (RJ45).
The housing and mounting plate are plastic.

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Mounting plate
Housing
00477
RJ45 socket on base of unit for:
•RXT10.1 commissioning and
service tool
•RXT20.1 service terminal
•Diagnostic plug, with button
for LON registration
80084
Disposal
The unit contains electric and electronic components and must not be disposed of
with domestic waste.
The local and actual regulations must be observed.
Engineering notes
•The receiver receives its power via the PPS2 interface
•Receiver range: approx. 30 m, and up to 100 m in the open. The range can vary
widely. Room topologies and building materials (metal, concrete etc.) reduce or
alter the range significantly.
•To ensure good wireless communication with the room units, avoid metal
obstacles in the wireless field.
àAvoid mounting the unit on or behind a metal cover!
•The unit must be mounted at least 1 metre from the transmitter
•An error signal "sensor short circuit" is transmitted after 3 years of uninterrupted
operation (battery monitoring feature) The batteries of all room units must then be
replaced.
àN.B.: The plant documentation must contain a note to this effect!
Mounting instructions
•The receiver is suitable for mounting on walls or ceilings, and for installation in a
flush mounting box
•An elevated position, or mounting on the same storey as the room unit(s) can
extend the wireless range
•Depending on the materials used for the ceiling, the receiver may be concealed in
the ceiling void
(note that metal must be avoided)
•The admissible ambient conditions must be observed
•The mounting instructions and a drilling template are printed on the device packa-
ging
•A set of fixing accessories is enclosed with the room unit
•Do not mount on a metal surface
•Do not install behind a cover or a metal grid which impedes wireless
communication
•The unit must be mounted at least 1 metre from the transmitter
STOP
Caution!

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Commissioning and establishing communication
Please do not make any adjustments without a careful reading of the following
commissioning notes.
•The unit(s) must be mounted at least 1 metre from the receiver
•Where there is more than one receiver in the same building, communication must
be established with each receiver separately, after a time delay. This is because
commissioning signals can be received from adjacent rooms, or even from
neighbouring buildings during the commissioning process.
Communication between the wireless room unit and the receiver can be established
either before or after installation. Checking the wireless communication (see below)
only makes sense when all the devices are mounted.
PLEASE FOLLOW THE INSTRUCTIONS EXACTLY IN THE SEQUENCE SHOWN:
1. Snap-mount the RXZ90.1 receiver on the mounting plate (power ON: the receiver
goes into "Installation" mode).
2. Insert batteries in all the allocated wireless room units (max. 5) or remove the
isolating strip from the batteries already inserted. (power ON: the room unit
transmits its unique ID to the receiver).
3. You can establish communication with the next receiver as soon as the 4-minute
"Installation mode" has expired in all the room units.
Brief pressure (<1 s) on the button adjacent to the battery holder of the room unit
allows you to check the wireless link with the room controller. After receiving this
signal, the receiver will close the PPS2 interface for 1.5 s. This briefly extinguishes
the display on the connected RXT20.1 service terminal (or the green LED on the
diagnostic plug, see Diagnostics, below). If there is no wireless link with the receiver,
the display on the service terminal (or the green LED) will not be extinguished.
Pressing the button on the room unit causes the controller to send its Neuron ID in
the same way as for registration on the LON bus. However, when checking the
wireless communication, we are not interested in the Neuron ID, but in observing
whether the controller reacts to the wireless signal.
Additional functions for establishing communication
Sustained pressure (>5s) on the button of the room unit to be removed.
The receiver will delete only this room unit from its device list.
Caution: Wait 4 minutes before changing any further links.
Sustained pressure (>5s) on the button of the room unit to be replaced.
The receiver will delete this room unit from its device list and then switch to
installation mode.
Insert batteries in the replacement unit(s); these will switch to installation mode.
The receiver recognises all newly connected room units and adds these to its device
list.
Caution: Wait 4 minutes before changing any further links.
STOP
Caution!
Establishing
communication
for the first time
Checking the
wireless
communication
Remark
Cancelling the link with
a room unit
Replacing room units
(replacement units)

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Sustained pressure (>5s) on the button of one of the existing room units.
The receiver will delete this room unit from its device list and then switch to
installation mode.
Insert the batteries in all the additional devices to be installed (or remove insulating
strip); the devices will switch to installation mode.
The receiver recognises all newly connected room units and adds these to its device
list.
The room unit on which the button has been pressed, is deleted from the device list
and therefore has to be reconnected. To bring it off load and set it to installation
mode, remove the batteries for at least 30s.
Caution: Wait 4 minutes before changing any further links.
For this purpose you need a special diagnostic plug (see Diagnostics, below). Insert
it and press the button on the plug for >5s. This will delete the entire device list from
the receiver and then bring it to the "Normal mode" with an empty device list.
To re-commission it, shortly bring the receiver off-load.
Then follow the procedure under Establishing communication for the first time.
Additional notes:
•The room unit starts in installation mode each time batteries are inserted (after
min. 30s off load)
•When there are no room units in its device list, the receiver starts in installation
mode when the power supply is connected. It scans for installation signals for 3 ½
minutes, and identifies all room units in installation mode within its receiver range
•The first 5 room units identified are entered in the device list of the receiver
•For each receiver, a delay must precede the process of establishing
communication, as the receiver can also pick up signals from other room units in
the vicinity
àWait at least 4 minutes between each new installation sequence
•A Receiver with at least one room unit in its device list will not switch to
installation mode after a power failure, but continue normal operation with the
associated room units.
•Connecting the receiver to the power supply (power ON) when the device list
isempty (snap-mount RXZ90.1 receiver on mounting plate)
•Connecting the room controller to the power supply, when the receiver is
connected to the controller and its device list is empty
•With fewer than 5 room units registered, connecting the diagnostic plug to the
receiver and pressing the button briefly ( < 1s)
•Plugging the RXT20.1 service terminal into the receiver with an empty device
list, and pressing the service pin on the RXT20.1 >4s
•Sustained pressure (>5s) on the button of an existing room unit.The receiver
will delete this room unit from its device list and then switch to installation mode
Connecting additional
room units to an
existing receiver
Deleting all links with a
receiver
Installation mode
Different ways of setting
the receiver to installa-
tion mode

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Diagnostics and the diagnostic plug
The process of establishing communication (receiver status) can be monitored by
connecting the diagnostic plug to the receiver.
The plug can be assembled in-house or ordered from your national Landis & Staefa
office. It is an aid for the service staff and cannot be purchased normally.
•Connections 3 and 4 are short-circuited by a pushbutton
•Connections 5 (+) and 6 (–) are used to operate a red LED
•Connections 7 and 8 are used to operate the green LEDs
(One of the two green LEDs will light up, depending on the polarity of the bus
power supply)
Tool socket
Series resistors
R = 11.2k
4 3 2 178 6 5
00495
LEDs (2mA) Button
2x green 1x red
RJ45 telephone-type socket
Cable (8-wire)
Green LED (<2mA)
Green LED (Optional,
lights up in event of
incorrect polarity)
Red LED
Pushbutton
Status Red LED signals
Installation mode Permanently ON
Normal mode
Receiver's device list is empty Rapid flashing (approx. 5 times per s)
Normal mode
Receiver's device list not empty 1 room unit: 1 flash / 5 s pause 2 room units: 2 flashes / 5 s
pause
3 room units: 3 flashes / 5 s
pause
4 room units: 4 flashes / 5 s
pause
5 room units: 5 flashes / 5 s
pause
Normal mode
Receiver's device list not empty and
PPS2 communication not working
Flashes more slowly (approx.
once/s)
(e.g. during initialisation of the
controller after POWER ON)
Status Green LED signals
PPS2 power supply ON ON continuously
PPS2 short circuit OFF
Pushbutton Action
Brief pressure <1s Sets receiver to installation mode if
fewer than 5 room units in device list

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Sustained pressure >5s Deletes the device list from the
receiver and then brings it to the
"Normal mode" with an empty device
list.

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Technical data
Power supply Operating voltage DC 12 ... 15 V
The device receives its power from the
connected room controller via PPS2
(SELV in accordance with HD384)
Power consumption S1 (from room
controller) Max. 0.12 VA
Interfaces Receiver –Room controller PPS2 (point-to-point interface)
Baud rate 4.8 kbit/s
Wireless room unit –Receiver Uni-directional
Frequency band 868 MHz Operating frequency 868.95 MHz
Baud rate 19.2kbit/s
Modulation BFSK
Channel coding NRZ / BCH
Transmitter power (ERP) 1 mW (0 dBm)
Range inside building Approx. 30 m
(depending on building permeability)
Establishing a connection
(configuration) Pushbutton method
Connection test (registration on LON) Service pin (brief pressure of button
on QAX9x.1)
Cable connections Connection terminals (screw terminals) Stranded or solid conductors,
0.8 x 2.5 mm2
Single cable lengths Receiver –Room controller See controller installation principles
(for DESIGO RXC see CA2Z3802)
Cable type 4-core, twisted pair, unscreened
Tool connecting cable Made up in-house, max. 3 m
Housing protection standard Protection standard to EN 60529 IP 30
Protection class Insulation protection class III
Ambient conditions Ambient conditions to IEC721 Operation: Transport:
Environmental conditions Class 3K5 Class 2K3
Temperature 0 ... 50 °C –25 ... 70 °C
Humidity < 85 rh < 95 rh
Mechanical conditions Class 3M2 Class 2M2
Industry standards Electromagnetic compatibility(EMC) 89/336/EEC
Low Voltage Directive (LVD) 73/23/EEC
Directive on Radio Equipment and Tele-
communication Terminal Equipment
and the Mutual Recognition of their
Conformity (R&TTE)
99/5/EC
ERM (Short range devices) EN 300 220-1 V1.3 : 09.00
Radio Equipment and Systems (RES
Electromagnetic Compatibility
standard for Short Range Devices
(SRD))
ETS 300 683 : 06.97
Safety of Information Technology
Equipment EN 60950 1992
Dimensions See “Dimensions”
Colour Front plate NCS S 0502-G
≈RAL 9003 signal white
Housing base and mounting plate RAL 7035 light grey
Weight Excluding packaging 0.13 kg

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Connection terminals
Connecting a commissioning and service tool or service terminal to the tool socket
on the receiver provides access to the connected room controllers.
The bus cable is looped through to the tool socket for this purpose. The bus cable is
not affected by the receiver.
The PPS2 interface is also routed to the tool socket, enabling a service terminal to
be connected.
87654321
C– C+ CP– CP+
80085
PPS2 interface, power supply
CP+1Device power supply, PPS2 data (positive)
CP–2Device power supply, PPS2 data (negative)
Bus connection (looped to tool socket)
C+ 3with LON bus (DESIGO RXC): CLA
C–4with LON bus (DESIGO RXC): CLB
5...8 Not used
Tool socket
Standard RJ45 tool socket
Communication Diagnostic plug
1
3206Z01
2345678 1with LON bus (DESIGO RXC): CLA
2with LON bus (DESIGO RXC): CLB
3
4
5
6
7CP+ PPS2 data
8CP–PPS2 data
Button for installation
Button for installation
Red LED +
Red LED –
Green LED +
Green LED –
Connection diagrams
Connecting the receiver to a DESIGO RXC room controller:
00476
PPS2
Tool
A
R1
B
4 3 1 2 4 3 2 1
C– C+ CP– CP+
N1
CP+ CP– CLA CLB
LON-Bus
PPS2
78 6 5
CTwisted pair
R1 RXZ90.1 receiver
N1 RXC… room controller
A Connection for RXT10.1 commissioning and service tool
B Connection for RXT20.1 service terminal with PPS2 interface
C Connection for diagnostic plug

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Dimensions
9,5
32
36
4,2
60
00496
90
100
56 60
56

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2001 Siemens Building Technologies Ltd. Subject to technical alteration