Binder KB - Overtemperature Safety Controller (Class 3.1); Safety Controller Modes

KB / KB-UL (E4 + E6) 10/2021 page 104/147
17.2.1 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 temperature
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:
Temperature set point Safety controller mode Safety controller set-point
40 °C
Limit (absolute) 45 °C
Offset (relative) 5 °C
17.2.2 Setting the safety controller
To display and to change the current safety controller settings in the “safety controller” submenu, go to
Menu > Safety controller
Safety controller mode: selection between Limit (absolute) and Offset (relative)
Fixed value
08.03.2015 05:05:06
Submenu “Safety controller”
(view with standard chamber equipment)
Select “Mode”
and press the operating button.
..\ Safety controller
Mode
Setpoint
Show settings
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