67
Temperature parameter settings
Sensor with Cala KNX display
• Version: 13.03.2017 • Technical changes and errors excepted.
tivated below. Please note that the setting "After power supply restoration and pro-
gramming" should not be used for the initial start-up, as the factory settings are always
used until the first communication (setting via objects is ignored).
Set the threshold value directly in the application program using parameters, or define
them via the bus using a communication object.
Threshold value setting via parameter:
Set the threshold values and hysteresis directly.
Threshold value setting via a communication object:
Define, how the threshold value is to be received from the bus. Basically, a new value
can be received, or simply a command to increase or decrease.
During initial commissioning, a threshold value must be defined, which will be valid
until the first communication with a new threshold value. For units which have already
been taken into service, the last communicated threshold value can be used. Basically,
a temperature range is given, in which the threshold value can be changed (object val-
ue limit).
A set threshold value will be retained until a new value or a change is transferred. The
current value is saved, so that it is retained in the event of a power supply failure and
will be available once the power supply is restored.
Set the
hysteresis
independent of the type of threshold value specification.
Maintain the
threshold values and delays received via
communication objects
• never
• after power supply restoration
• after power supply restoration and
programming
Threshold value setting via
Parameter
• Communication objects
Threshold value in 0.1°C
-300 … 800; 200
Threshold value setting via
Parameter •
Communication objects
Start threshold value in 0.1°C
valid until first communication
-300 … 800; 200
Object value limit (min)
in 0.1°C
-300…800
Object value limit (max)
in 0.1°C
-300…800
Type of threshold value change
Absolute value • Increase/decrease
Increment
(upon increase/decrease change)
0.1°C • ... • 5°C
Hysteresis setting
in % • absolute
Hysteresis in 0.1°
0...1100; 50
Hysteresis in % of the threshold value
0 … 50; 20
Summary of Contents for Cala KNX AQS/TH
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