User Manual

Heating, ventilation and air conditioning - primary control
Communicating controllers - Synco™ 700
Switching and monitoring device RMS705B..
8-9
Siemens Switzerland Ltd
Building Technologies Division
2019www.siemens.com/gamma
8
Stock No. Product No. DT
S55370-C100 RMS705B-1 A
RMS705B-1Switching and monitoring device
The RMS705B-1 complements the range of Synco700 products as a freely congurable unit for
• control and supervisory functions in heating, ventilation and refrigeration plant
• non-standard applications
and, for this reason, offers no predened 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 exible 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, Roma-
nian, 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
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
Degree of protection IP20
Dimensions (W x H x D) 173 × 90 × 80 mm
5-Central control unit RMB795B__.indd 9 26.07.2018 14:28:07