Data Sheet for Product

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Siemens RDE100.. Room thermostat with Auto Timer, Option External Input CB1N1422en_10
Building Technologies 2019-02-28
· Floor Heating
Functions
· Room temperature control via built-in sensor or external input
· Selection of operating mode with operating mode touchkey
· Setting auto time switch (individual day, 7 day or 5-2 day)
· Display of current room temperature or setpoint in °C or °F
· Touchkey lock (manually)
· Setpoint lock
· Periodic pump run
· Optimum start / stop
· Comfort temperature limitation by Economy setpoint locked
· Reloading factory settings for commissioning and control parameters
· One multifunctional input (RDE100.1 only) freely selectable for:
- Floor Heating temperature limitation function
- Operating mode switchover contact (keycard, window contact, etc.)
Temperature control
RDE100.. comprises of both 2-position and TPI temperature controls, which can be
configured by parameter P78 (Control behavior).
2-position control algorithm is to switch on and off the heating system within a
switching differential according to comparison between setpoint setting and the
measured room temperature.
Q14
T[°C]
ON
OFF
W
SD
1422D01
T Room temperature
SD Switching differential
W Room temperature setpoint
Q14 Output signal for heating
TPI (Time proportional Integral) control algorithm is to periodically switch on and off
the heating system. The period time and pulse length of the control signal (PWM)
are determined by the setpoint and the measured room temperature.
0
10 0
X pH
Y[% ]
YHC
A
6
V
1
0
9
5
4
4
2
0
D
0
1
Heating mode
T Room temperature
Y Output signal for heating (PWM)
W Room temperature setpoint
YHC Control command “Valve”
XpH Proportional band “Heating”
Floor heating limitation function (RDE100.1 only)
The factory setting for this function is Off (disabled) and must be set to "On" if floor
heating is used.