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Setting the parameters
Room Temperature Controller KNX eTR 101-BA2
• Version: 20.04.2021 • Technical changes and errors excepted.
Threshold value setpoint using parameter:
Set the threshold values and hysteresis directly.
Threshold value setpoint using a communication object:
Beforehand, enter how the threshold value will 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 un-
til the first call 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 value limit).
A set threshold value will be retained until a new value or a change is transferred. The
current value is saved in so that it is retained in the event of a power supply failure and
will be available again once the power supply is restored.
Set the
hysteresis
independently of the type of threshold value setting.
Switching output
Set the behaviour of the switching output when a threshold value is exceeded/under-
cut. The output switching delay can be set using objects or directly as a parameter.
Threshold value setpoint using
Parameter
• Communication objects
Threshold in 0.1°C
-300… 800; 200
Threshold value setpoint using
Parameter •
Communication objects
The last communicated value should
• never
• after restoration of power
• after power restoration and
Programming
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
Interval
(upon increase/decrease change)
0.1 °C • ... • 5°C
Hysteresis setting
in % • absolute
Hysteresis in % of the threshold value
0 … 50; 20
Hysteresis in 0.1°C
0 … 1100; 50
When the following conditions apply, the
output is
(TV = Threshold value)
• TV above = 1 | TV - Hyst. below = 0
• LV above = 0 |LV - hysteresis below = 1
• TV below = 1 |TV + hysteresis above = 0
• TV below = 0 |TV + hysteresis above = 1
Delays can be set via objects
(in seconds)
No • Yes
