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CA2N1644en 
07.2001 

Siemens Building Technologies

Building Automation

 

 
 
 
 

 

1

644

 

 

 

 

 

 

 

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 

Summary of Contents for DESIGO RX Series

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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 ...

Page 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 ...

Page 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...

Page 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...

Page 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 ...

Page 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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