Functions; Temperature Control - Siemens RDF301 Basic Documentation

General note:
Parameters

Temperature control

Display
Room temperature
/
Concurrent display of
°C and °F
Outside temperature via
bus
Time of day via bus
Note:
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Siemens
Building Technologies
3.

Functions

Functions
3.1 Temperature control Temperature control
Setting of the control parameters (P01 etting of the control parameters (P01, etc., mentioned throughout the document)
is described in section is described in section 3.13.
The thermostat thermostat acquires the room temperature via built-in sensor, external room
temperature sensor (QAA32), or external return air temperature sensor (QAH11.1), temperature sensor (QAA32), or external return air temperature sensor (QAH11.1), temperature sensor (QAA32), or external return air temperature sensor (QAH11.1),
and maintains the setpoint by tains the setpoint by delivering actuator control commands to heating
and/or cooling equipment. The following control outputs are available: and/or cooling equipment. The following control outputs are available and/or cooling equipment. The following control outputs are available
∂ ON/OFF
OFF control (2-position)
∂ Modulating PI/P control with 3
Modulating PI/P control with 3-position control output (only for 2
applications) applications
The switching differential or proportional band is 2 K for heating mode and 1 K for The switching differential
cooling mode (adjustable via parameters P30 and P31). cooling mode (adjustable via parameters P30 and P31).
The integral action time The integral action time for modulating PI control is 5 minutes
minutes (RDF600KN RDF600KN), adjustable via parameter P35.
The display shows the acquired room temperature or the The display shows the acquired room temperature or the Comfort
ble via parameter P06. The factory setting displays the ble via parameter P06. The factory setting displays the current room temperature.
Use parameter P04 to change the room temperature display Use parameter P04 to
needed.
The acquired room temperature (internal or external The acquired room temperature (internal or external sensor
information on the information on the bus.
∂ With automatic
automatic changeover or continuous heating / cooling, symbols changeover or continuous heating / cooling, symbols
indicate that the system currently heats or cools (heating or cooling output is indicate that the system currently heats or cools (heating or cooling output is indicate that the system currently heats or cools (heating or cooling output is
activated). activated).
∂ With manual
manual changeover (P01 = 2), symbols
currently operates in heating or cooling mode. Thus, the symbols are displayed currently operates in heating or cooling mode. Thus, the symbols are displayed currently operates in heating or cooling mode. Thus, the symbols are displayed
even when the thermostat operates in the neutral zone. even when the thermostat operates in the neutral zone. even when the thermostat operates in the neutral zone.
Concurrent display of the current temperature or setpoint in °C and °F (parameter Concurrent display of the current temperature or setpoint in Concurrent display of the current temperature or setpoint in
P07 = 1) is possible on the ) is possible on the thermostats.
The outside temperature can be displayed on the room thermostat The outside temperature can be displayed on the room thermostat by setting The outside temperature can be displayed on the room thermostat
parameter P07 parameter P07 = 2. This temperature value has only information character. 2. This temperature value has only information character.
In LTE Mode LTE Mode, the outside temperature can only be received on the outside temperature can only be received on outside temperature
zone 31.
In S-Mode Mode, the corresponding communication object needs
KNX sensor device. KNX sensor device.
Time of day via bus can be displayed on the room thermostat by setting parameter Time of day via bus can be displayed on the room thermostat Time of day via bus can be displayed on the room thermostat
P07 = 3 or or 4. The display format is either in 12- or in 24-hour
The information can be received from a Synco controller with time master The information can be received from a Synco controller with The information can be received from a Synco controller with
functionality or any other KNX device if the corresponding communication object is functionality or any other KNX device if the corresponding communication object is functionality or any other KNX device if the corresponding communication object is
bound.
∂ When an application program is downloaded to the Synco devices via
When an application program is downloaded to the Synco devices via ETS, the When an application program is downloaded to the Synco devices via
correct group addresses need to be downloaded as well to display the time of correct group addresses need to be downloaded as well to display the time of correct group addresses need to be downloaded as well to display the time of
day on the day on the room thermostat (see Synco Knowledge Base
RDF301, RDF301.50..., RDF600KN, RDF600KN/S RDF301, RDF301.50..., RDF600KN
etc., mentioned throughout the document)
in sensor, external room
actuator control commands to heating
(only for 2-pipe
is 2 K for heating mode and 1 K for
PI control is 5 minutes (RDF301...) and 45
Comfort setpoint, selecta-
current room temperature.
display from °C to °F as
sensor) is also available as
/ indicate that the system indicate that the system
s to be bound with a
hour format.
Base - KB771).
Basic Documentation ocumentation
/
CE1P3171en
2017-12-07