44
Parameter setting
Sensors Mini-Sewi KNX TH-L-Pr and Mini-Sewi KNX L-Pr
• Version: 30.08.2018 • Technical changes and errors excepted.
When using the control variable for a 4/6 way valve, the following applies:
0%...100% heating = 66%...100% control variable
OFF = 50% control variable
0%...100% cooling = 33%...0% control variable
6.9.1. Heating control level 1/2
If a heating control mode is configured, one or two setting sections for the heating le-
vels are displayed.
In the 1st level, heating is controlled by a PI control, which allows to either enter control
parameters or select predetermined applications.
In the 2nd level (therefore only in case of 2-level heating), heating is controlled via a PI
or a 2-point-control.
In level 2, the setpoint difference between the two levels must also be specified, i.e. be-
low which setpoint deviation the second level is added.
PI control with control parameters:
This setting allows individual input of the parameters for PI control.
Specify the deviation from the setpoint value at which the maximum control variable
value is reached, i.e. the point at which maximum heating power is activated.
The reset time shows how quickly the controller responds to deviations from the set-
point value. In case of a short reset time, the control responds with a fast increase of
the control variable. In case of a long reset time, the control responds somewhat less
Control type
(for level 2 only)
• 2-point-control
• PI control
Control variable of the 2nd Level is on
(only for level 2 with 2 point controlling)
• 1 bit object
• 8 bit object
Setpoint difference between 1st and 2nd
level (in 0.1°C)
(for level 2)
0...100; 40
Control type
(for level 2, no common control variables)
• 2-point-control
• PI control
Control variable is a
(for level 2 with 2-point controlling, no
common control variables)
• 1 bit object
• 8 bit object
Control type
•
PI control
Setting of the controller by
•
Controller parameter
• specified applications