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MKF / MKFT (E5) 06/2020 page 68/176
9.7.5 Tolerance range
You can specify a temperature and humidity program tolerance range for each program section with dif-
ferent values for the tolerance minimum and maximum. When the actual value exceeds the given thresh-
old, the program is interrupted. This is indicated on the display (see below). When the actual temperature
is situated again within the entered tolerance limits, the program automatically continues. Therefore, the
duration of the program may be extended due to the programming of tolerances.
Programming of tolerances may extend program duration.
An entry of “-99999” for the tolerance minimum means “minus infinite” and an entry of “999999” for the
tolerance maximum means “plus infinite”. Entry of these values will never lead to program interruption.
The entry of “0” for the tolerance minimum and/or maximum deactivates the respective tolerance function.
When requesting rapid value transitions, we recommend not programming tolerance values in order to
enable the maximum heating-up, cooling-down, humidification or dehumidification speed.
Section view, showing the temperature tolerance
band
• Select the field “Tolerance band min” and enter the desired lower tolerance band value. Setting range:
-99999 to 99999. Confirm entry with Confirm icon. The controller returns to the section view.
• Select the field “Tolerance band max” and enter the desired upper tolerance band value. Setting
range: -99999 to 99999. Confirm entry with Confirm icon. The controller returns to the section view.
Set the tolerance ranges for other parameters accordingly, if desired.
If one of the actual values (temperature and/or humidity) is outside the program tolerance range the
whole program course is interrupted. During this program interruption time the controller equilibrates to
the set-points of the current section.
The screen header indicates “Program pause (tolerance band)”. The program runtime indication flashes
and does not proceed any further.
When the temperature or humidity values are back within the entered program tolerance range, the pro-
gram continues automatically.
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