User Manual

Heating, ventilation and air conditioning - primary control
Communicating controllers - Synco™ 700
Central control unit RMB795B..
262
Siemens Switzerland Ltd www.siemens.com/gamma 2020
Smart Infrastructure
8
Central control unit for room controllers and room thermostats
 Central control unit with integrated control and supervisory functions for individual room control with
RXB room controllers and room thermostats RDG/RDF
 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/cooling
demands
 Individual time programs for room groups
 Preselected operating modes and setpoints‚ minimum / maximum temperature supervision and
supervision of RXB room controllers and room thermostats RDG/RDF
 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
 Clear-text operation with separate operator unit (plug-in type or detached)
 Integrated KNX bus communication
 No commissioning tool required
The RMB795B-1 supports the languages: English, German, French, Italian, Spanish, Portuguese, Dutch,
Danish, Finnish, Norwegian, Swedish, Polish, Czech, Hungarian, Russian, Slovak, Bulgarian, Greek,
Romanian, Slovenian, Serbian, Croatian, Turkish, Chinese.
Extension modules complement the central control unit and offer extra functions. They are attached to
the controller via plug-in connectors. The extension modules do not operate autonomously.
The operation of the device from commissioning to enduser operation can be done via the operator unit.
Available extension modules:
 1 universal module RMZ785
 2 universal modules RMZ787
A total of 3 extension modules can simultaneously be used with the central control unit.
Available operator units:
 Plug-in type operator unit RMZ790
 Detached operator unit RMZ791
 Bus operator unit RMZ792
Data sheet
N3122
Operating voltage
AC 24 V
Frequency
50/60 Hz
Power consumption
12 VA
Communication
KNX (KNX TP1)
Analog outputs, number
2
Analog output, signal
DC 0...10 V
Analog output, current
Max. 1 mA
Universal inputs, number
6
Universal input, signal
2 x LG-Ni1000
DC 0...10 V
Potential-free digital status contact
LG-Ni1000
Pt1000
T1 (PTC)
Relay outputs, number
4
Relay output, switching voltage
AC 19...250 V
Relay output, switching current
4 (3) A
Degree of protection
IP20
Dimensions (W x H x D)
173 x 90 x 80 mm
RMB795B-1
Stock no.
Product no.
S55370-C162
RMB795B-1