Setpoints; Dependent Setpoints - ABB i-bus KNX Product Manual

4.4

Setpoints

4.4.1

Dependent setpoints

© 2009 Busch-Jaeger Elektro GmbH – A Company of the ABB Group
The ambient temperature controller can be operated with dependent or
individual setpoints. The two options are explained in more detail below.
Komfort- Standby-
Temp. betrieb betrieb
Regler kühlt,
wenn Istwert > Kühlen Sollwert
Sollwerte
Kühlen
Kühlen Sollwert
Anhebung
Komfortbetrieb
Standby
Kühlen
Regler fordert keine Leistung
Totzone zwischen
Heizen und Kühlen
(Stellgröße = 0)
Absenkung
Standby
Heizen Sollwert
Heizen
Komfortbetrieb
Sollwerte
Heizen
Regler heizt,
wenn Istwert < Heizen Sollwert
Abhängige Sollwerte in den verschiedenen Betriebsarten,
wenn Heizen und Kühlen aktiv
Dependent setpoints have two base setpoints, one for heating ("heating
setpoint comfort mode") and one for cooling ("cooling setpoint comfort
mode").
The settings "...reduction standby/night mode" and "... reduction
standby/night mode" refer to the base setpoint. This means that, for
example, if "heating setpoint comfort mode" is set to 21 °C and 2 K has been
set for "heating setpoint reduction standby", the heating setpoint is reduced
2 K to 19 °C in standby mode. If 4 K is specified for "heating setpoint
reduction night mode", the heating setpoint in night mode is 17 °C.
The dependence of the setpoints is retained even after a manual setpoint
adjustment. For example, if the user manually adjusts the setpoint of
the specified temperature "heating setpoint comfort mode" up by 1 K to
22 °C, this value is reduced 2 K to 20 °C when standby mode is activated.
In night mode the value is reduced by 4 K, making the setpoint 18 °C.
The user can manually change the parameterised setpoints with the two
push-switches "increase temperature" and "reduce temperature". Push and
hold the "increase temperature" push-switch (approx. 1 s) to switch between
"heating setpoint comfort mode" and "cooling setpoint comfort mode" in
the heating setpoint and the "reduce temperature" push-switch in the cooling
setpoint.
The two setpoints for heating and cooling can be changed as much as
desired over the bus, even without the ETS. A 2-byte temperature value
must be sent to the communication object "base setpoint - control".
The value is saved as "heating setpoint comfort mode" or "cooling setpoint
comfort mode" depending on whether heating or cooling is currently
enabled. The received values are written to the device memory and are
retained even after a bus power failure and restoration. New base setpoints
can also be sent to the device in the event of changes in room usage,
such as by visualisation. A new parameterisation is not required.
The base setpoint reference is taken into account with a manual adjustment
and dependent setpoints. This specifies whether the base setpoint refers
to the comfort temperature for heating, cooling or the mid-range temperature
between heat and cool.
Nacht- Frost/Hitzschutz-
betrieb Betrieb
Sollwert Hitzeschutz
Anhebung
Nacht
Kühlen
Absenkung
Nacht
Heizen
Sollwert Frostschutz
93