Technical data
Table Of Contents
- 1. About this document
- 2. Summary
- 3. Functions
- 3.1 Temperature control
- 3.2 Operating modes
- 3.3 Room temperature setpoints
- 3.4 Applications overview
- 3.5 Additional functions
- 3.6 Control sequences
- 3.7 Control outputs
- 3.8 Fan control
- 3.9 Multifunctional input, digital input
- 3.10 Handling faults
- 3.11 KNX communications
- 3.11.1 S-mode
- 3.11.2 LTE mode
- 3.11.3 Zone addressing in LTE mode (in conjunction with Synco)
- 3.11.4 Example of heating and cooling demand zone
- 3.11.5 Send heartbeat and receive timeout
- 3.11.6 Startup
- 3.11.7 Heating and cooling demand
- 3.11.8 Fault function on KNX
- 3.11.9 KNX switching groups (RDF301.50, RDF301.50H only)
- 3.12 Communication objects (S-mode)
- 3.13 Communication objects (LTE-mode)
- 3.14 Control parameters
- 4. Handling
- 5. Supported KNX tools
- 6. Connection
- 7. Mechanical design
- 8. Technical data
The table below shows the relation between parameter, temperature source and
temperature display:
Parameter P51
External temp.
sensor available
Source for display of
room temperature
Output control
according to
Floor temp.
limit function
OFF
No
Built-in sensor
Built-in sensor
Not active
OFF
Yes
External temp. sensor
External temp. sensor
Not active
10...50 ˚C
No
Built-in sensor
Built-in sensor
Not active
10…50 ˚C Yes Built-in sensor
Built-in sensor + limit
by external sensor
Active
The "Floor temperature limitation" function influences the outputs listed in the table
below:
"Floor temp. limit" function has impact on
tt
Application Output Y11 Output Y21
Heating
(P01 = 0/2/3)
Cooling
(P01 = 1/2/3)
Heat. and cool.
(P01 = 4) Remark
2-pipe H/C valve Y11 N/A
2-pipe & el
heater
H/C valve El heater Y21 Y21 *) Only el heater
4-pipe Heating valve Cooling valve
Y11 N/A Y11
*) If P13 = ON
electric heater in cooling mode
Either floor temperature sensor or external room temperature sensor can be used.
Dew point monitoring is essential to prevent condensation on the chilled ceiling
(cooling with fan disabled, parameter P52). It helps avoid associated damage to
the building.
A dew point sensor with a potential-free contact is connected to multifunctional
input X1 or X2. If there is condensation, the cooling valve is fully closed until no
more condensation is detected, and the cooling output is disabled temporarily.
The condensation symbol " " is displayed during temporary override and the fault
"Condensation in room" will be sent via bus.
The input must be commissioned accordingly (P38, P40).
See section 3.9 "Multifunctional input".
If the "Button lock" function is enabled by parameter P14, the buttons will be locked
or unlocked by pressing the operating mode button for 3 seconds.
If "Auto lock" is configured, the thermostat will automatically lock the buttons 10 /
20 seconds after the last adjustment (RDF301... / RDF600KN).
Note:
Dew point monitoring
KNX
R
Fault state
Fault information
Button lock
31 / 92
Siemens RDF301, RDF301.50..., RDF600KN Basic documentation CE1P3171en
Building Technologies Functions 2014-05-23