Multifunctional Input, Digital Input - Siemens RDF301 Basic Documentation

#
0
1
2
Heating/
cooling
changeover
3
Window
state
(RDF600..)
3
Window
state
(RDF301..)
4
Siemens
Building Technologies
3.9

Multifunctional input, digital input

The thermostat thermostat has 2 multifunctional inputs X1 and X2.
An NTC NTC type sensor like the QAH11.1 (AI, analog input) or a switch (DI
input) can be connected to the input terminals. The functionality of ) can be connected to the input terminals. The functionality of ) can be connected to the input terminals. The functionality of the inputs can
be configured via parameters P38 + P39 for X1 and P40 be configured via parameters P38
The current temperature or state of the inputs X1/X2 is available on The current temperature or
monitoring purposes. monitoring purpose
The parameters can be set to the following values: The parameters can be set to the following values:
Function of Function of Description
input
Not used Not used No function.
External / return External / return Sensor input for external room temperature sensor or Sensor input for external room temperature sensor or
air temperature air temperature return air temperature sensor to acquire the current return air temperature sensor to acquire the current
room temperature, or floor heating temperature room temperature, or floor heating temperature
sensor to limit the heating output.
Note: The room temperature is acquired by the built
sensor if the floor temperature limitation function is sensor if the floor temperature limitation function is
enabled via parameter P51.
Heating / Heating / Sensor input for "Automatic heating /
cooling cooling changeover" function.
changeover changeover A switch can also be connected rather than a sensor A switch can also be connected rather than a sensor
Important: Switch closed means always cooling, (this Important: Switch closed means always cooling, (this
cannot be changed), see section 3.5.
Heating / cooling changeover is also possible via bus. Heating / cooling changeover is also possible via bus.
In this case, the function must not be assigned to any this case, the function must not be assigned to any
local input X1, X2. See also section 3.5
Diagnostic value 00 is displayed for closed contact /
100 for open contact, if a switch is connected. 100 for open contact, if a switch is connected.
Window indow contact Window contact input to switch the operating mode to
(RDF600KN RDF600KN...) Protection.
1)
If the window contact is open, user operations are
ineffective and "OFF" is displayed.
Window contact is also possible via bus. In this case, Window contact is also possible via bus. In this case,
the function must not be assigned to any local input the function must not be assigned to any local input
X1, X2. See also section
Operating mode Operating mode Digital input to switch over the operating mode to Digital input to switch over the operating mode to
switchover switchover Economy.
(RDF301..) (RDF301..) If the operating mode switchover contact is active, If the operating mode switchover contact is active,
user operations are ineffective and "OFF
displayed.
Operating mode switchover is also possible via bus. Operating mode switchover is also possible via bus.
In this case, the function must not be assigned to any In this case, the function must not be assigned to any
local input X1, X2. See also section 3.2.1
Dew point Dew point Digital input for a dew point sensor to detect Digital input for a dew point sensor to detect
monitor monitor condensation. Cooling is stopped if condensation
occurs.
RDF301, RDF301.50..., RDF600KN, RDF600KN/S RDF301, RDF301.50..., RDF600KN
igital input
) or a switch (DI, digital
P40 + P41 for X2.
available on bus for
re is acquired by the built-in
cooling
.
3.5.
is displayed for closed contact /
to switch the operating mode to
, user operations are
3.2.1.
OFF" is
3.2.1.
condensation
Basic Documentation ocumentation
Type
X1/X2
--
AI
AI /
DI
DI
DI
DI
51 / 94
CE1P3171en
2017-12-07