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Room temperature controller | Operating mode and setpoints
the ETS. Taking into account the "Standby" and "Night" parameters under the
header "Temperature shift via operating mode", the temperature setpoints for
the standby and night mode are derived from this value depending on the
heating or cooling operating mode. The deadband will be additionally con-
sidered for the "Heating and cooling" operating mode.
The 2-byte object "Basic setpoint" provides the option of changing the basic
temperature, and thus all the dependent setpoint temperatures during device
operation. A change via the object must always be enabled in the ETS by con-
figuring the parameter "Approve activations via bus" to "yes". If the basic set-
point adjustment via the bus is disabled, the "Basic setpoint" object will be hid-
den. The controller rounds the temperature values received via the object to
the specified "Step width of the setpoint shift" (0,1 K or 0,5 K).
–
Setting "absolute"
The setpoint temperatures for Comfort, Standby and Night mode are inde-
pendent of each other. Depending on the operating mode and heating/cooling
mode, various temperature values can be specified in the ETS within the
range +7.0 °C to +40.0 °C. The ETS does not validate the temperature values.
It is thus possible, for example, to select smaller setpoint temperatures for
cooling mode than for heating mode, or to specify lower temperatures for
Comfort mode than for Standby mode.
After commissioning using the ETS the setpoint temperatures can be changed
via the bus by means of temperature telegrams. This can be done using the
communication object "Setpoint temperature - Active operating mode". When
the controller receives a telegram via this object, it immediately sets the re-
ceived temperature as the new setpoint of the active operating mode, and op-
erates from then on with this setpoint. In this manner it is possible to adapt the
setpoint temperatures of all operating modes separately for eating and cooling
mode. The frost or heat protection temperature programmed using the ETS
cannot be changed in this manner.
With absolute setpoint presetting there is no basic setpoint and, in the mixed
operating mode "Heating and cooling" (if necessary also with additional level),
also no deadband. Consequently, the room temperature controller cannot con-
trol the switchover of the operating mode automatically, which is why, in this
configuration, the setting for the parameter "Heating/cooling switchover" is
fixed in the ETS to "via object".
Furthermore, setpoint shifting does not exist for absolute setpoint presetting.
In two-level control mode, all set-temperatures of the additional level are de-
rived from the setpoint temperatures of the basic level. The setpoint temperat-
ure of the additional level are determined by subtracting the "Difference
between basic and additional levels", which is permanently configured in the
ETS, from the setpoints of the basic level in heating mode or by adding the
setpoints in cooling mode. If the temperature setpoints of the basic level are
changed, the setpoint temperatures of the additional level will be automatically
changed as well. Both levels will heat or cool with the same command value at
the same time when the level distance is "0".
Heating actuator 6-gang with controller | Order no. 2139 00 | 21393100
Page 145 of 257
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