34
Parameter setting
Temperature evaluation unit KNX T6-UN-B4
• Version: 17/12/2019 • Technical changes and errors excepted.
2-point-rule (only level 2):
The 2-point-rule 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
threshold range. Then determine whether a 1 bit object (on/off) or an 8 bit object (on
with percentage/off) should be used.
Now determine what should be transmitted when the control is blocked. Set a value
greater 0 (=OFF) to receive a basic heating level, e.g. for floor heating.
Upon release, the control variable follows the rule again.
5.5.4. Cooling control level 1/2
If a cooling control mode is configured, one or two setting sections for the cooling lev-
els are displayed.
On the 1st level, cooling is controlled by a PI control which allows to either enter con-
trol parameters or select predetermined applications.
On the 2nd level (therefore only in case of a 2 level cooling), cooling is controlled via a
PI or a 2-point-control.
On level 2, the set point deviation between the two levels must furthermore be deter-
mined, i. e. the highest 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.
Control type
is determined at a higher level for common
variables
•
2-point control
Hysteresis (in 0.1°C)
0…100; 20
Actuating variable is a
• 1-bit object
• 8-bit object
Value (in %)
only for 8 bit objects
0...100
When blocked, the variable shall
• not be transmitted
• send a specific value
Value (in %)
only if a value is transmitted
0...100
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
Содержание 70222
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