KBF + KMF (E6) 07/2017
page 76/155
12.2.1 Safety controller modes
You can select between “Limit (absolute)” and “Offset (relative)” safety controller mode
•
Limit:
Absolute maximum permitted temperature value
This setting offers high safety as a defined temperature limit will not be exceeded. It is important to
adapt the safety controller set-point after each modification of the temperature set-point. Otherwise,
the limit could be too high to ensure efficient protection, or, in the opposite case, it could prevent the
controller from reaching an entered set-point outside the limit range.
•
Offset:
Maximum overtemperature above any active temperature set point. The maximum tempera-
ture changes internally and automatically with every set-point change.
This setting is recommended for program operation. It is important to check the safety controller set-
point and safety controller mode occasionally, as it does not offer a fix, independent limit temperature
value, which would never be exceeded.
Example:
Desired temperature value: 40 °C, desired safety controller value: 45 °C.
Possible settings for this example:
Temperature set point
Safety controller mode
Safety controller set-point
40 °C
Limit (absolute)
45 °C
Offset (relative)
5 °C
12.2.2 Setting the safety controller
Press the
Setpoint setting
icon to access the “Setpoint” setting menu from Normal display.
“Setpoints” menu.
Select the field “Safety controller” to access the
settings.
•
In the field “Mode” select the desired setting
“Limit” or “Offset”.
•
Select the corresponding field “Limit”
or
“Offset” according to the selected mode and enter the desired
safety controller setpoint. Confirm entry with
Confirm
icon.
Summary of Contents for KBF 115
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Page 149: ...KBF KMF E6 07 2017 page 149 155 25 Product registration ...
