42
Parameter setting
Sensor KNX AQS/TH-B-UP
• as of software 3.1 • Version: 01.03.2017 • Technical changes and errors excepted.
During initial commissioning, a target value must be provided which will be valid until
the 1st communication of a new target value. For units which have already been taken
into service, the last communicated target value can be used. Basically, an air humidity
range is given in which the target value can be changed (object value limit).
A set target value will be retained until a new value or a change is transferred. The cur-
rent 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.
Ventilation control
Depending on the control mode, one and/or two setting sections for the ventilation
stages are displayed.
For two-stage ventilation, the target value difference between the two stages must be
defined, i.e. the target value which, when exceeded, triggers the switch to the 2nd
stage.
Determine the deviation from the target value at which the maximum variable value is
reached, i.e. the point at which maximum output is used.
The reset time shows how quickly the contro responds to deviations from the target
value. In case of a short reset time, the control responds with a fast increase of the var-
iable. In case of a long reset time, the control responds somewhat less urgently and
needs longer until the necessary variable for the target value deviation is reached.
You should set the time appropriate to the ventilation system at this point (follow the
manufacturer's instructions).
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 target value in ppm
valid till 1st communication
(not upon saving the target value after pro-
gramming)
400… 5000; 800
Object value limit (min) in 0.1°C
400…5000; 400
Object value limit (max) in 0.1°C
400…5000; 1500
Type of threshold change
Absolute value • Increase/decrease
Step size in ppm
(upon increase/decrease change)
1 • 2 • 5 • ... • 20 • ... • 100 • 200
Target value difference between levels 1
and 2 Stage in ppm
(for stage 2 only)
100...4000; 400
Maximum control variable is reached
at target value/actual difference of (in ppm)
100...4000; 100
Reset time in minutes
1...255; 10
Содержание KNX AQS TH-B-UP
Страница 5: ...4 Clarification of signs...
