49
Parameter setting
Sensors Intra-Sewi KNX TH-L-Pr and Intra-Sewi KNX L-Pr
• Version: 30.08.2018 • Technical changes and errors excepted.
2-point-control (only level 2):
2-point-control is used for systems which are only set to ON or OFF.
Enter the hysteresis that prevents frequent on/off switching of temperatures in the th-
reshold range.
If separate control variables are used, select whether the control variable of the 2nd le-
vel is a 1 bit object (on/off) or an 8 bit object (on with percentage/off).
Now specify what should be sent when the control is blocked. Set a value greater 0
(=OFF) to receive a basic heating level, e.g. for floor heating. On release, the control va-
riable follows the rule again.
5.9.2. Cooling control level 1/2
If a cooling control mode is configured, one or two setting sections for the cooling le-
vels are displayed.
In the 1st level, cooling is controlled by a PI control in which either control parameters
can be entered or predetermined applications can be selected.
In the 2nd level (therefore only for 2-level cooling), cooling is controlled via a PI or a 2-
point-control.
In level 2, the setpoint deviation between the two levels must also be specified, i.e. abo-
ve which setpoint value deviation the second level is added.
Control type
(is determined at a higher level for com-
mon control variables)
•
2-point-control
Hysteresis (in 0.1°C)
0...100; 20
Control variable is a
• 1 bit object
• 8 bit object
Value (in %)
(for 8 bit object)
0...100
When blocked, the control variable shall
• not be sent
• send a specific value
Value (in %)
only if a value is sent
0...100
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
Summary of Contents for Intra-Sewi KNX L-Pr
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Page 6: ...6 Clarification of signs ...
