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Siemens Building Technologies 

RXZ90.1 – Receiver with PPS2 interface 

CA2N1644en 

Building Automation 

 

07.2001 

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) 

Содержание DESIGO RX Series

Страница 1: ...unction 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 tran...

Страница 2: ... 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 des...

Страница 3: ... 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 à N 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 in...

Страница 4: ...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 t...

Страница 5: ... receiver starts in installation mode when the power supply is connected It scans for installation signals for 3 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...

Страница 6: ...R 11 2k 4 3 2 1 7 8 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 ...

Страница 7: ...ing Technologies RXZ90 1 Receiver with PPS2 interface CA2N1644en Building Automation 07 2001 Sustained pressure 5s Deletes the device list from the receiver and then brings it to the Normal mode with an empty device list ...

Страница 8: ...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 Cla...

Страница 9: ...CP 2 Device power supply PPS2 data negative Bus connection looped to tool socket C 3 with LON bus DESIGO RXC CLA C 4 with LON bus DESIGO RXC CLB 5 8 Not used Tool socket Standard RJ45 tool socket Communication Diagnostic plug 1 3206Z01 234 5678 1 with LON bus DESIGO RXC CLA 2 with LON bus DESIGO RXC CLB 3 4 5 6 7 CP PPS2 data 8 CP PPS2 data Button for installation Button for installation Red LED R...

Страница 10: ...10 11 Siemens Building Technologies RXZ90 1 Receiver with PPS2 interface CA2N1644en Building Automation 07 2001 Dimensions 9 5 32 36 4 2 60 00496 90 100 56 60 56 ...

Страница 11: ...11 11 Siemens Building Technologies RXZ90 1 Receiver with PPS2 interface CA2N1644en Building Automation 07 2001 2001 Siemens Building Technologies Ltd Subject to technical alteration ...

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