Basic Documentation
Table Of Contents
- 1 About this document
- 2 Overview
- 3 Notes
- 4 Functions
- 4.1 Temperature control
- 4.2 Operating modes
- 4.3 Room temperature setpoints
- 4.4 Application overview
- 4.5 Power supply selection for RDG200KN
- 4.6 Additional functions
- 4.7 Control sequences
- 4.7.1 Sequence overview (setting via P001)
- 4.7.2 Application mode
- 4.7.3 2-pipe fan coil unit
- 4.7.4 2-pipe fan coil unit with electric heater
- 4.7.5 2-pipe fan coil unit with radiator or floor heating
- 4.7.6 2-stage heating and cooling
- 4.7.7 4-pipe fan coil unit
- 4.7.8 4-pipe fan coil unit with electric heater
- 4.7.9 Chilled/heated ceiling and radiator applications
- 4.7.10 Compressor applications
- 4.7.11 Applications with external AQR sensor or QMX room operator unit
- 4.7.12 Setpoints and sequences
- 4.8 Control outputs
- 4.9 Fan control
- 4.10 Multifunctional input, digital input
- 4.11 Handling system faults
- 4.12 KNX communications
- 4.12.1 S-Mode
- 4.12.2 Master/slave configuration in KNX S-Mode
- 4.12.3 LTE-Mode
- 4.12.4 Zone addressing in LTE-Mode (with Synco)
- 4.12.5 Master/slave configuration in LTE-Mode
- 4.12.6 Example of heating and cooling demand zones
- 4.12.7 Send heartbeat and receive timeout
- 4.12.8 Startup
- 4.12.9 Heating and cooling demand
- 4.12.10 Fault and alarms function on KNX
- 4.13 Communication objects
- 4.14 Communication objects (LTE-Mode)
- 4.15 Control parameters
- 5 Supported KNX tools
- 6 Connection
- 7 Technical data
- 8 Dimensions
- Index
Functions
KNX communications
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4.12.6 Example of heating and cooling demand zones
The building is equipped with Synco controls on the generation side and
RDF../RDU../RDG.. room thermostats on the room side.
In the case of a typical application, the individual RDF../RDG.. room thermostats
send their heat demand to the primary controller (in the above example to the
RMH760).
(1) and (2) designate the numbers of the distribution zone.
● This type of application can also be applied to refrigeration distribution zones.
● If no 2-pipe fan coil unit is used, heat and refrigeration demand signals are sent
simultaneously to the primary plant.
4.12.7 Send heartbeat and receive timeout
In a KNX network, S-Mode and LTE-Mode communication objects can be
exchanged between individual devices. The "Receive timeout "defines the period of
time within which all the communication objects requested from a device is
received at least once. If a communication object is not received within this period,
a predefined value is used.
Similarly, the "Send heartbeat" defines the period of time within which all the
communication objects requested must be transmitted at least once.
Explanation relating to the
illustration
Notes