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13.2.1 Selecting between safety controller class 2 (temperature limiter) or class 3.1
You have the option of operating the safety controller with class 2 or 3.1 functionality.
Path: Main menu > Settings > Various
Submenu “Various”.
• Select the field “Protecdtion class” and enter the desired class: „2“ (Klasse 2) oder „3“ (Klasse 3.1).
Factory setting: class 3. Confirm entry with Confirm icon.
• After completing the settings, press the Confirm icon to take over the entries and exit the menu, or
press the Close icon to exit the menu without taking over the entries.
The functionality of the safety controller and the corresponding setting menus in the controller are adapted
to the selection made here.
13.2.2 Safety controller mode
You can set the safety controller mode to “Limit (absolute)” or “Offset (relative)”.
• Limit: Limit value, 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 value 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: Offset value, maximum overtemperature above any active temperature set point. The resulting
maximum temperature changes internally and automatically with every temperature 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 value
40 °C
Limit (absolute) 45 °C
Offset (relative) 5 °C
Check the setting regularly and adjust it following changes of the set-point or charge.
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