Basic Documentation

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Siemens RDU341 Basic Documentation CE1P3172en
Building Technologies 2017-02-17
# Function of
input
Description Type
X1/X2
KNX
R
Fault
information
6 Fault Digital input to signal an external fault (example: dirty air
filter).
If the input is active, “ALx” is displayed and a fault is
sent on the bus. See also section 3.10.11.
(Alarm x, with x = 1 for X1, x = 2 for X2).
Note: Fault displays have no impact on the thermostat's
operation. They merely represent a visual signal.
DI
KNX
R
X1, X2
(Digital)
7 Monitor input
(Digital)
Digital input to monitor the state of an external switch via
bus.
DI
KNX
R
X1, X2
(Temp.)
8 Monitor input
(Temperature)
Sensor input to monitor the state of an external sensor
(e.g. QAH11.1) via bus.
AI
∂ Operational action can be changed between normally open (NO) and normally
closed (NC) via parameter P39, P41.
∂ Each input X1, X2 must be configured with a different function (1…5).
Exception: 1 or 2 inputs can be configured as fault (6) or monitor input (7,8)
∂ X1 is factory-set to “Operating mode switchover” (3), X2 to “External sensor”
(1)
For more detailed information, refer to section 3.4.