How alarms are triggered
An alarm is raised, when its monitored value crosses a threshold.
If the value exceeding the threshold lasts less than the Trigger delay (Tt), then the alarms doesn't trigger.
The trigger delay acts as a filter for transient short-duration fault.
Alarm resets when the monitored value crosses the reset threshold.
If the value lowering the reset lasts less than the Reset delay (Tr), then the alarms doesn't reset.
The reset delay acts as a filter for transient short-duration corrected signal.
