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
Fan control
4
98 | 170
A6V11545892_en--_b
For 3-speed fan control:
The individual switching points for each fan stage can be adjusted via P353…P355.
The fan speed switch off point is 20% below the switch on point. The diagrams
below show fan speed control for modulating PI control.
For DC 0…10 V fan control:
If DC 0...10 V fan control is selected, the fan switching points are set using the
following parameters:
● P359 & P360: DC 0…10 V fan max. output
● P358: DC 0…10 V middle speed output
● P357: DC 0…10 V fan min. output
● P356: Switching point for fan
Heating/coolin
g
1- or 3-speed
fan
DC 0…10 V
fan
w Room temperature setpoint
Q Fan speed
YH Control demand "Heating"
YC Control demand "Cooling"
XpH Proportional band "Heating"
(P050)
XpC Proportional band "Cooling"
(P052)
X
dz
Dead zone (P055)
Fan speed switching point
high (P355)
Fan speed switching point
med (P354)
Fan speed switching point low
(P353)
Fan_max Max. DC 0...10 V fan speed
(P359 for heating & P360 for
cooling)
Fan_med Med. DC 0...10 V fan
speed
(P358)
Fan_min Min. DC 0...10 V fan speed
(P357)
Fan_on Fan switch-on point (P356)
The diagram only shows the proportional part of PI control.
In applications with On/Off control:
Fan control with
modulating
heating/cooling control
(PWM, 3-pos or
DC 0...10 V)
Note
Fan control with On/Off
heating/cooling control