Siemens RDF301.50 Series Basic Documentation

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Siemens
RDF301, RDF301.50..., RDF600KN
Building Technologies
3.5
Additional
The heating
possible if the
(parameter P01 = 3) and no local input X1, X2 is assigned with this function.
In the absence of the required information (e.g. due to problems with data
communication, power fa
operating mode (heating or cooling).
If a cable temperature sensor (QAH11.1 + ARG86.3
parameter P38 / P40 is =
sensor is used to change over from heating to cooling mode, or vice versa. When
the water temperature is above 28 °C (parameter P37), the thermostat
over to heating mode, and to cooling mode when below 16 °C (parameter P36)
If the water temperature is between the 2 changeover points immediately after
power-
up, the thermostat starts in
The water temperature is acq
updated accordingly.
16
M
M
Operating mode
T
w
Water temperature
The QAH11.1 cable temperature sensor for automatic heating / cooling changeover
can be replaced by an external switch for manual, remote changeover:
The sensor or switch can be connected to input terminal X2 or X1, depending on
the commissioning of the inputs (P38, P40).
See also section
By using an external switch as changeover, the Opera
P39 or
P41
The assignment is fix:
If manual heating / cooling changeover is commissioned (P01 = 2), then heating /
cooling mode cannot be changed via bus / chang
remain in the last mode as selected locally via button.
The
thermostat
tem
perature sensor (QAA32), or external return air temperature sensor (QAH11.1)
connected to multifunctional input X1 or X2.
Inputs X1 or X2
See section
Heating / cooling
changeover via bus
Heating/cooling
changeover
Automatic heating /
cooling changeover via
changeover sensor
Changeover switch
Note
Manual heating /
cooling changeover
External / return air
temperature sensor
RDF301, RDF301.50..., RDF600KN
, RDF600KN/S Basic D
ocumentation
Additional
functions
The heating
/
cooling changeover information can be received via bus. This is only
possible if the
control sequence
is set to automatic heating / cooling changeover
(parameter P01 = 3) and no local input X1, X2 is assigned with this function.
In the absence of the required information (e.g. due to problems with data
communication, power fa
ilure, etc.), the thermostat
operates in the last valid room
operating mode (heating or cooling).
If a cable temperature sensor (QAH11.1 + ARG86.3
) is connected to X1 / X2, and
parameter P38 / P40 is =
2
, the water temperature acquired by the changeover
sensor is used to change over from heating to cooling mode, or vice versa. When
the water temperature is above 28 °C (parameter P37), the thermostat
over to heating mode, and to cooling mode when below 16 °C (parameter P36)
If the water temperature is between the 2 changeover points immediately after
up, the thermostat starts in
the previously active
mode.
The water temperature is acq
uired at 30-
second intervals and the operating state is
updated accordingly.
T [°C]
w
28
Operating mode
Cooling mode
Water temperature
Heating mode
The QAH11.1 cable temperature sensor for automatic heating / cooling changeover
can be replaced by an external switch for manual, remote changeover:
3076Z03
X2
M
T
X2
M
QAH11.1
Contact open
Contact closed
The sensor or switch can be connected to input terminal X2 or X1, depending on
the commissioning of the inputs (P38, P40).
See also section
3.9.
By using an external switch as changeover, the Opera
ting action (via parameters
P41
) cannot be modified.
The assignment is fix:
Contact open ⇓
heating mode
Contact closed ⇓ cooling mode
If manual heating / cooling changeover is commissioned (P01 = 2), then heating /
cooling mode cannot be changed via bus / chang
e
over sensor / switch; it will
remain in the last mode as selected locally via button.
thermostat
acquires the room temperature via built-
in sensor, external room
perature sensor (QAA32), or external return air temperature sensor (QAH11.1)
connected to multifunctional input X1 or X2.
Inputs X1 or X2
must be commissioned accordingly.
See section
3.9.
ocumentation
CE1P3171en
2017-12-07
cooling changeover information can be received via bus. This is only
is set to automatic heating / cooling changeover
(parameter P01 = 3) and no local input X1, X2 is assigned with this function.
In the absence of the required information (e.g. due to problems with data
operates in the last valid room
) is connected to X1 / X2, and
, the water temperature acquired by the changeover
sensor is used to change over from heating to cooling mode, or vice versa. When
the water temperature is above 28 °C (parameter P37), the thermostat
changes
over to heating mode, and to cooling mode when below 16 °C (parameter P36)
.
If the water temperature is between the 2 changeover points immediately after
mode.
second intervals and the operating state is
The QAH11.1 cable temperature sensor for automatic heating / cooling changeover
can be replaced by an external switch for manual, remote changeover:
Contact open
⇓ heating mode
Contact closed
⇓ cooling mode
The sensor or switch can be connected to input terminal X2 or X1, depending on
ting action (via parameters
heating mode
If manual heating / cooling changeover is commissioned (P01 = 2), then heating /
over sensor / switch; it will
in sensor, external room
perature sensor (QAA32), or external return air temperature sensor (QAH11.1)

Siemens RDF301.50 Series Specifications

General

Brand	Siemens
Model	RDF301.50 Series
Category	Thermostat
Language	English