Catalog

Room automation Synco
Central control unit RMB..
For room controller and room thermostats RXB.. / RXL.. / RDG.. / RDF.. / RDU..
6-25
2015Some products are not available in every country
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Siemens Switzerland Ltd
Building Technologies Division
6
Data sheet N3122
Operating voltage AC 24 V
Frequency 50/60 Hz
Power consumption 12 VA
Universal inputs‚ number 6
Universal input‚ signal 0...1000 Ohm
1000...1175 Ohm
2 x LG-Ni1000
DC 0...10 V
Potential-free digital status contact
LG-Ni1000
Pt1000
T1 (PTC)
Analog outputs‚ number 2
Analog output‚ signal DC 0...10 V
Analog output‚ current Max. 1 mA
Relay outputs Potential-free switching contact
Relay outputs‚ number 4
Relay output‚ switching voltage AC 19...250 V
Relay output‚ switching current 4 (3) A
Communication KNX (KNX TP1)
Central control unit RMB795B for room controllers and room thermostats
- Central control unit with integrated control and supervisory functions for individual room control with
RXB and RXL room controllers and room thermostats RDG/RDF/RDU
- Central collection of heating and cooling demands from any KNX room controllers
- Control of any HVAC primary controllers in dependence on the received and calculated heating/cool-
ing demands
- Individual time programs for room groups
- Preselected operating modes and setpoints‚ minimum / maximum temperature supervision and super-
vision of RXB/RXL room controllers and room thermostats RDG/RDF/RDU
- Operation and monitoring of individual RXB/RXL room controllers
- Trend and fault reporting functions for the input variables temperature‚ relative / absolute humidity‚
pressure / differential pressure‚ volumetric air flow‚ indoor air quality‚ etc.
- Heating / cooling changeover function for operation with 2-pipe systems
- Flexible configuration
- Functionality can be extended (extension modules)
- Clear-text operation with separate operator unit (plug-in type or detached)
- Integrated KNX bus communication
- No extra commissioning tool required
Extension modules complement the RMB795B central control unit and offer extra functions. The exten-
sion modules are attached to the RMB795B central control unit. Full operation from commissioning to
enduser operation via operator unit.
Available extension modules:
- max. 1 universal module RMZ785
- max. 2 universal modules RMZ787
Available operator units:
- Plug-in type operator unit RMZ790
RMB795B..