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Parameter setting
Actuator KNX S1R-BA4-UP 24 V
• Version: 27.05.2020 • Technical changes and errors excepted.
Threshold value setpoint using parameter:
Set the threshold values and hysteresis directly.
Threshold value setpoint using a communications 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
until the 1st communication of 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 EEPROM, so that this is retained in the event of a power
supply failure and will be available once the power supply is restored.
Switching output:
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Set the behaviour of the switching output when a threshold value is exceeded/
undercut. The output switching delay can be set using objects or directly as a
parameter.
Threshold value setpoint using
Parameter
• Communications object
Temperature:
Threshold value in 0.1°C
Humidity:
Threshold value in % rH
-300 … 800; 200
0...100; 70
Hysteresis of the threshold value in %
0 … 50; 20
Threshold value setpoint using
Parameter •
Communications object
The last communicated value should be
retained
• never
• after restoration of power
• after restoration of power and
programming
Start threshold value in 0.1°C
valid till 1st 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 change
Absolute value • Increase/decrease
Step size
(upon increase/decrease change)
0.1°C • ... • 1°C • ... • 5°C
Hysteresis of the threshold value in %
0 … 50; 20