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
Multifunctional input, digital input
4
104 | 170
A6V11545892_en--_b
Fan control is set to enable by default (P350 = 1), if the thermostat is set with
control sequence "H/C ceiling with PICV and 6-port ball valve as changeover". For
this application, where the combi valve PICV controls the flow rate and the 6-port
ball valve works as changeover heating / cooling, fan control can:
● Also be disabled (P350 = 0)
● Run only in heating (P350 = 2) sequence
● Run only in cooling (P350 = 3) sequence
For this application, only DC fan control is available at output Y50.
4.10 Multifunctional input, digital input
The thermostat has 3 multifunctional inputs X1, X2 and U1. Input U1 will be
configured as digital input in a future product version.
An NTC type sensor like NTC 3k, a LG-Ni1000 (AI, analog input) or a switch (DI,
digital input) can be connected to the input terminals. The functionality of the inputs
can be configured via P150 + P151 for X1, P153 + P154 for X2, and P155 + P156
for U1.
The current temperature or state of the inputs X1/X2 and U1 is available on the bus
for monitoring purposes.
The parameters can be set to the following values:
#
Input function
Description
Type
X1/X2/U1
0
Not used
No function
--
1
External/return air
temperature
Sensor input for external room temperature
sensor or return air temperature sensor to acquire
the current room temperature.
AI
Heating/
cooling
changeover
2
Heating/cooling
changeover
Sensor input for "Automatic heating/cooling
changeover" function.
A switch can also be connected rather than a
sensor.
Important: Switching state configured via P151,
P154, P156. See also Additional functions
[➙ 45].
Heating/cooling changeover is possible via bus.
In this case, the function must not be assigned to
local inputs X1, X2, U1. See also Additional
functions [➙ 45].
Diagnostic value 0 ˚C is displayed for closed
contact, 100 ˚C for open contact, if a switch is
connected.
AI/DI
Window
contact
3
Window contact
Digital input to change over the operating mode
to Protection.
If the window contact is active, user operations
are ineffective and OFF is displayed.
Window contact is also possible via bus. In this
case, do not assign the function to local inputs
X1, X2 or U1. See also Operating modes [➙ 25].
DI
Fan operation with combi
valve PICV and a 6-port
ball valve as changeover