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
Control behavior (P78)
The new control algorithm of RDE100.. family offers a choice of control actions that
can be configured via parameter P78. This means that optimum control can be
selected for every type of application (factory setting “TPI slow”).
2-Position controller with 1 [K] switching hysteresis
· 2-Position controller with 0.3 [K] switching hysteresis.
· For general control situations. Provides a better comfort than 1 [K] switching
hysteresis.
· Can also be used for difficult control situations.
TPI control behavior for slow heating systems that require longer minimum On
times and limited numbers of switching cycles per hour.
Typical applications:
· Floor heating systems, oil fired boilers
· Can also be used for all other types of heating applications. (Alternative
setting)
Minimum switching on / off time > 4 minutes
Average period time Approximately 20 minutes
TPI control behavior for general heating applications such as radiator systems,
thermal actuators, …
Minimum switching on / off time > 1 minute
Average period time Approximately 20-25 minutes
TPI control behavior for fast heating systems that tolerate a high number of
switching cycles.
Typical applications: electric heaters, gas boilers, fast thermal actuators
2-position, 1 K
2-position, 0.3 K
TPI slow
TPI medium
TPI fast