Building Automation
Industrial Automation
Power Automation & Safety
Bangladesh Distributor
Question
The threshold value cannot be set. What is causing this, and what can be done to resolve it?
Answer
Cause 1:
The HIGH threshold value is set lower than the LOW threshold value.
In this case, the following error message will be displayed.
| Display | Cause |
 (flashing) | Attempted to set the LOW threshold value higher than the HIGH threshold value |
 (flashing) | Attempted to set the HIGH threshold value lower than the LOW threshold value |
Remedy 1:
Make sure that the HIGH threshold value is set higher than the LOW threshold value.
Cause 2:
The hysteresis (Hys) is too high. If this is the case, the difference between the HIGH threshold value and the LOW threshold value is smaller than the hysteresis value, so that a PASS judgment is not possible. The setting is thus not allowed.
Remedy 2:
Make the hysteresis value smaller to avoid the condition described above.
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