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
Control sequences
4
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81 | 170
The diagrams below show the control sequence of modulating PI control.
Heating and cooling mode (P001 = 4)
Heating mode with manual selection
(P001 = 3) or
for energy saving (P010 = 2 & P014) in
heating sequence
Cooling mode with manual selection
(P001 = 3) or
for energy saving (P010 = 2 & P015) in
cooling sequence
T[°C] Room temperature
YH Control command "Valve"
(heating)
w Room temperature setpoint
YC Control command "Valve"
(cooling)
X
dz
Dead zone (P055)
XpH Proportional band "Heating"
(P050)
XpC Proportional band "Cooling"
(P052)
The diagrams only show the PI thermostat’s proportional part.
For setting sequence and control outputs, see Application overview [➙ 40],
Sequence overview (setting via P001) [➙ 67] and Control outputs [➙ 91].
Parameter P256 (RDG260KN) sets the heating flow limitation when using a PICV.
See Additional functions [➙ 45].
Modulating control:
3-position, PWM, or
DC 0...10 V
Note