18
Parameter setting
KNX K8 actuator
• Status: 18.11.13 • Technical Changes and Errors excepted.
4.4.3. Heating control level 1/2
If a heating control mode is configured, one or two setting sections for the heating
levels are displayed.
On the 1st level, heating is controlled by a PI control which allows to either enter
control parameters or select predetermined applications.
On the 2nd level (therefore only in case of a 2 level heating), heating is controlled via
a PI or a 2-point-control.
On level 2, the set point deviation between the two levels must furthermore be
determined, i. e. the lowest set point value from which the 2nd level is then added
(when values exceed this set point).
PI control with control parameters:
This setting allows individual input of the parameters for PI control.
Determine the deviation from the set point value which reaches maximum variable
value, i. e. the point at which maximum heating power is activated.
The reset time shows how quickly the controls react to deviations from the set point
value. In case of a short reset time, the controls react with a fast increase of the
For heating and cooling
• separate variables are used
• common variables are used for
Level 1
• common variables are used for
Level 2
• common variables are used for
Level 1+2
Control type
only for level 2
• 2-point control
• PI control
Regulating variable of the 2nd Stage is on
only for level 2
• 1-bit object
• 8-bit object
Set point difference between levels 1 and 2
(in 0.1°C)
only for level 2
0…100; 40
Control type
only for level 2 and if no common variables
are used
• 2-point control
• PI control
Control type
•
PI control
Set control using
•
Controller parameter
• provided applications
