Brochure

Heating, ventilation and air conditioning - primary control
Communicating controllers - Synco™ 700
Switching and monitoring device RMS705B..
276
Siemens Switzerland Ltd www.siemens.com/gamma 2021
Smart Infrastructure
8
Switching and monitoring device
The RMS705B-1 complements the range of Synco700 products as a freely configurable unit for
 control and supervisory functions in heating, ventilation and refrigeration plant
 non-standard applications
and, for this reason, offers no predefined standard applications.
The RMS705B-1 is especially suited for the following functions:
 Connection of additional universal alarm inputs
 Adding free inputs for display and supervision
 Event logging (e.g. legionella function)
 Additional time programs (ON / OFF) for basic functions
 Calculation of enthalpy, enthalpy differential, absolute humidity, dewpoint and wet bulb temperature
 Logic function blocks for switching on / off depending on different conditions
 Lead / lag control of pumps, fans, motors, etc., with automatic changeover
 Step switch with linear, binary or flexible functionality
The RMS705B-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 switching and monitoring device 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
 2 universal modules RMZ788
A total of 4 extension modules can simultaneously be used with the switching and monitoring device.
Available operator units:
 Plug-in operator unit RMZ790
 Detached operator unit RMZ791
 Bus operating unit RMZ792
Data sheet
N3124
Operating voltage
AC 24 V
Frequency
50/60 Hz
Power consumption
12 VA
Communication
KNX (KNX TP1)
Analog outputs, number
4
Analog output, signal
DC 0...10 V
Analog output, current
Max. 1 mA
Digital outputs, number
6
Universal inputs, number
8
Universal input, signal
T1 (PTC)
Pt1000
Potential-free digital status contact
LG-Ni1000
Digital pulse contact
DC 0...10 V
2 x LG-Ni1000
0...1000 Ohm
Relay outputs, number
6
Relay output, switching voltage
AC 19...250 V
Relay output, switching current
4 (3) A
Mounting
DIN rail
Degree of protection
IP20
Dimensions (W x H x D)
173 × 90 × 80 mm
RMS705B-1
Stock no.
Product no.
S55370-C100
RMS705B-1