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Siemens RDG400KN Manual

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CE1N3192en
01 Jun 2010
Room thermostat with
KNX communications
For VAV heating and cooling systems
 KNX bus communications (S-mode and LTE mode)
 Backlit display
 PI / P control
 Output for VAV box / damper: DC 0...10 V / 3-position
 Output for heating / cooling coil: ON/OFF, PWM or 3-pos / DC 0..10V
 Output signal inversion as an option (DC 0...10 V  DC 10...0 V)
 2 multifunctional inputs for keycard contact, external sensor, etc
 Operating modes: Comfort, Economy and Protection
 Control depending on the room or the return air temperature
 Supply fan optimization: Input DC 0...10 V for damper position feedback
 Automatic or manual heating / cooling changeover
 Minimum and maximum limitation of room temperature setpoint
 Minimum and maximum limitation of air flow signal
 Adjustable commissioning and control parameters
 Commissioning with Synco ACS700, ETS3 Professional or via local HMI
 Integration into Synco
 Integration into DESIGO via group addressing (ETS3) or via individual
addressing
 Integration into third-party system via group addressing (ETS3)
 Operating voltage AC 24 V
3
RDG400KN
Building Technologies
192

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Summary of Contents for Siemens RDG400KN

  • Page 1 RDG400KN Room thermostat with KNX communications For VAV heating and cooling systems  KNX bus communications (S-mode and LTE mode)  Backlit display  PI / P control  Output for VAV box / damper: DC 0…10 V / 3-position ...
  • Page 2 The RDG400KN room thermostat is designed for the following types of system: VAV systems via ON/OFF or modulating control outputs:  Single-duct system  Single-duct system with electric heater  Single-duct system and radiator / floor heating  Single-duct system with heating / cooling coil The room thermostat is delivered with a fixed set of applications.
  • Page 3 Use P46 to change valve output from ON/OFF (factory setting) to PWM Use DIP switch 5 to change valve output from ON/OFF to 3-position 3 / 14 Siemens RDG400KN Room thermostat with KNX communications CE1N3192en Building Technologies 01 Jun 2010...
  • Page 4 AC 24 V  1) ON/OFF, 3-position or PWM Ordering  When ordering, indicate both product number / stock number and name:  E.g. RDG400KN / S55770-T165 room thermostat  Order valve actuators separately. Equipment combinations Data Type of unit Product no.
  • Page 5 *) With PWM control, it is not possible to ensure exact parallel running of more than one thermal actuator. If several actuators are controlled by the same room thermostat, preference should be given to motorized actuators with ON/OFF or 3-position control. 5 / 14 Siemens RDG400KN Room thermostat with KNX communications CE1N3192en Building Technologies 01 Jun 2010...
  • Page 6 Adapter plate 112 x 130 mm for surface wiring ARG70.2 N3009 KNX Power supply 160 mA (Siemens BT LV) 5WG1 125-1AB01 KNX Power supply 320 mA (Siemens BT LV) 5WG1 125-1AB11 KNX Power supply 640 mA (Siemens BT LV)

  • Page 7: Engineering Notes

    See the "Reference documentation", page 12 for information on how to engineer the KNX bus (topology, bus repeaters, etc.) and how to select and dimension connecting cables for supply voltage and field devices. 7 / 14 Siemens RDG400KN Room thermostat with KNX communications CE1N3192en Building Technologies 01 Jun 2010...

  • Page 8: Mounting And Installation

    DIP switches,. All DIP switches need to be set to “OFF” ("remote configuration"), if you want to select an application via commissioning tool. 8 / 14 Siemens RDG400KN Room thermostat with KNX communications CE1N3192en Building Technologies 01 Jun 2010...

  • Page 9: Control Parameters

     OCI700 USB-KNX interface Note An external KNX bus power supply is required if an RDG400KN is connected directly to a tool (ACS or ETS3) via KNX interface. Control parameters The thermostat's control parameters can be set to ensure optimum performance of the entire system (see basic documentation P3192).
  • Page 10 X1: P38 External temperature sensor, heating/cooling changeover sensor, operating mode switchover D1: P42 contact, dewpoint monitor contact, enable electric heater contact, fault contact, monitoring input 10 / 14 Siemens RDG400KN Room thermostat with KNX communications CE1N3192en Building Technologies 01 Jun 2010...
  • Page 11 Humidity < 95% r.h. Mechanical conditions Class 2M2 IEC 721-3-1 Storage Climatic conditions Class 1K3  25... 60 °C Temperature Humidity < 95% r.h. 11 / 14 Siemens RDG400KN Room thermostat with KNX communications CE1N3192en Building Technologies 01 Jun 2010...
  • Page 12 CM1Y9775 DESIGO RXB integration – S-mode CM1Y9776 DESIGO RXB / RXL integration – individual addressing CM1Y9777 Third-party integration CM1Y9778 Synco integration CM1Y9779 Working with ETS 12 / 14 Siemens RDG400KN Room thermostat with KNX communications CE1N3192en Building Technologies 01 Jun 2010...

  • Page 13: Connection Terminals

    CE+ KNX data + electric heater, CE- KNX data – radiator or 1 mA max. 1 A max. heating / cooling valve 1 A max. 13 / 14 Siemens RDG400KN Room thermostat with KNX communications CE1N3192en Building Technologies 01 Jun 2010...
  • Page 14 Dimensions in mm 28.3 28.3 28.3 28.3 128.0 27.7 28.3 16.0 28.5 93.0 28.2 27.8 30.8 14 / 14  2010 Siemens Switzerland Ltd Subject to change Siemens RDG400KN Room thermostat with KNX communications CE1N3192en Building Technologies 01 Jun 2010...

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