Catalog

Room automation Synco
Communicating controllers - RXB (KNX)
For fan coil‚ radiator‚ chilled ceiling
6-13
2015Some products are not available in every country
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Siemens Switzerland Ltd
Building Technologies Division
6
Operating voltage AC 230 V
Frequency 50/60 Hz
Power consumption Max. 12 VA
Control algorithm PI
Digital inputs‚ number 2
Triac outputs ON/OFF
PWM
3-position
Triac output‚ switching voltage AC 24 V
Triac output‚ switching current 0.5 A
Relay output‚ switching voltage AC 250 V
Relay output‚ switching current 5 (4) A
Communication Bus: KNX (S-mode and LTE mode)
Room unit: PPS2
Service plug RXT20.1
Mounting location Ceiling voids with cover
Fan coil
Panel
Mounting On DIN rail
With screws
Dimensions (W x H x D) 113 x 167 x 62 mm
Room controller with KNX communication
The controllers are used for temperature control in individual rooms.
- For 2-pipe with changeover or 4-pipe fan coil systems
- For radiator and chilled ceiling (RXB24.1 only)
- Control of thermal valve actuators AC 24 V‚ PDM‚ valve and damper actuators AC 24 V (3-position) as
well as KNX bus actuators
- Potential-free relay contacts for fan speed control
- Connecting relay for electric heating (RXB22.1 und RXB39.1)
- KNX bus communication
- Connection to Desigo building automation and control system via PX KNX
- Commissioning with "Handy Tool" QAX34.3 or Synco ACS
Application description fan coil: CM110672
Application description RAD/CLC: CM110671
RXB2..
Product Title Triac outputs‚ num-
ber
Relay outputs‚ num-
ber
Data sheet Stock No. Product No.
Room controller for
3-speed fan
4 3 N3873 BPZ:RXB21.1/FC-10 RXB21.1/FC-10
Room controller for
3-speed fan
4 3 N3873 BPZ:RXB21.1/FC-11 RXB21.1/FC-11
Room controller with
3-speed fan and elec-
tric heating coil
2 4 N3873 BPZ:RXB22.1/FC-12 RXB22.1/FC-12
Room controller for
chilled ceilings and
radiators
4 0 N3874 BPZ:RXB24.1/CC-02 RXB24.1/CC-02
Range overview RXB2..
The application determines the usable actuator (PWM /3-position) with the triac output