Assortment / System Description

65
• PI control
• Integration in Synco 700 via RMB795 central control unit
• Potential free relay contacts for fan control, electric air heater
• KNX-certified for individual room control
• Operating voltage AC 230 V
• KNX communication (LTE and S-mode)
• Connection of motoric KNX/EIB bus valves
• Control of thermal valve actuators AC 24 V PDM (pulse duration modulation,
triac), motoric valve and damper actuators AC 24 V (3-pos.) or electric air heater
• Commissioning with ETS Professional (S-mode data points), "HandyTool" (room
unit QAX34.3) or service tool OCI700.1
• Like RXB2.., but proprietary KNX communication (LTE mode only)
• Operating voltage AC 24 V
• Commissioning with "HandyTool" only, service tool OCI700.1 or ACS790
• Like RXB2.., but with 3 control outputs DC 0...10 V (not triac)
for fan, valve actuator or electric air heater
• Communication in LTE and S-mode
• Like RXL2.., but with 3 control outputs DC 0...10 V (not triac)
for fan, valve actuator or electric air heater
• Communication in S-mode only
To engineer plants and to select room controllers, Siemens’ HIT is available
www.siemens.com/HIT
(see page 87).
The application library for RXB/RXL room controllers contains predefined
applications (application software) for fan coil units, chilled ceilings/radiators
• For fan coil units, 2- or 4-pipe systems with/without changeover
• For fan coil units, 2- or 4-pipe systems with/without changeover
and electric air heater (reheater)
• For chilled ceiling systems with dewpoint monitoring and
radiator systems with downdraft compensation
• For fan coil units, 2- or 4-pipe systems with/without changeover
and electric air heater (reheater)
The room controllers’ functionality is determined by the application when activated.
If the room controllers are integrated in a KNX network with Synco controls,
additional functions, such as time programs or central control of setpoint changes,
etc., can be provided.
General
Room controllers RX..
Specific
Room controllers RXB2..
Room controllers RXL2..
Room controllers RXB39..
Room controllers RXL39..
Engineering
Application library
Outputs: Triac, 3-pos.
RXB21.1, RXL21.1
RXB22.1, RXL22.1
RXB24.1, RXL24.1
Outputs: DC 0...10 V
RXB39.1, RXL39.1
Functionality