Siemens RDG100KN Basic Documentation page 80

# Function of
input
5 Enable electric
K N X
R
heater
Enable
electric
heater
6 Fault
K N X
R
Fault
information
7 Monitor input
K N X
R
(digital)
D1, X1, X2
(Digital)
8 Monitor input
K N X
R
(temperature)
X1, X2
(Temp.)
9 Supply air
K N X
R
temperature
X1, X2
limitation
(Temp.)
(RDG16..KN
only)
10 Presence
K N X
R
detector
Presence
(RDG16..KN
detector
only)
Notes
80 / 132
Siemens
Building Technologies
Description
Digital input to enable/disable the electric heater via
remote control.
Enable electric heater is also possible via bus. In this
case, do not assign the function to any local input
X1, X2, D1. See also 3.6.
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 3.11.8.
(Alarm x, with x = 1 for X1, x = 2 for X2, x = 3 for
D1).
Note: Fault displays have no impact on the
thermostat's operation. They merely represent a
visual signal.
Digital input to monitor the state of an external switch
via bus
Sensor input to monitor the state of an external
sensor (e.g. QAH11.1) via bus.
Sensor input to acquire the supply air temperature.
The thermostat controls the room temperature via
the built-in sensor. The control output (DC 0...10 V)
is reduced if the supply air temperature falls below
the min. limit or exceeds the max. limit (P63, P64).
Presence detector input switches the operating
mode to Comfort when the room is occupied and
switches back to Economy when the room is
unoccupied.
Presence detector is also possible via bus. In this
case, do not assign the function to any local input
X1, X2 or D1. See also 3.2.1.
·
Control action can be changed from normally open (NO) and normally closed
(NC) via P39, P41 (or P43 if it is a digital input)
·
Each input X1, X2 or D1 must be configured with a different function (1...5).
Exception: 1, 2 or 3 inputs can be configured as fault (6) or monitor input (7,8)
·
X1 is factory-set to "External sensor" (1), X2 to "Not used" (0), and D1 to
"Operating mode switchover" (3)
For more detailed information, see3.4.
· For inputs X1, X2, or D1, one physical switch can be used for up to 20
thermostats (parallel connection)
Caution! DO NOT mix X1/X2 (mains potential on RDG100KN) and D1.
· For sensors on inputs X1, X2, or D1, the maximum cable length is 80 m
RDG100KN, RDG160KN, RDG165KN Basic Documentation
Type Type
X1/X2 DI
DI DI
DI DI
DI DI
AI --
AI --
DI DI
CE1P3191en
2018-07-03