ABB SM2000 User Manual page 70

...4 CONFIGURATION
...4.6.4 Alarm Configuration
Note. This tab is displayed only if the Recording Channel source is an Analog signal.
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Set the alarm type:
High/Low process – see Fig. 4.11
High/Low latch – see Fig. 4.12
High/Low annunciate – see Fig 4.13
Fast/Slow rate – see Fig. 4.14
Delayed High/Low process – see Fig. 4.15
Enter an Alarm Tag to identify the alarm when it is displayed
in the Chart, Process and Alarm Event views.
Note. Process and Latch alarms only – see Figs. 4.11 and 4.12.
Set the value, in engineering units, at which the alarm is to
activate.
Set the hysteresis value in engineering units and the time
hysteresis in seconds.
Process Variable
High Trip
Low Trip
When an alarm trip value is exceeded, the alarm does not
become active until the time hysteresis value has expired. If
the signal goes out of the alarm condition before the time
hysteresis has expired, the hysteresis value is reset.
Note. Annunciate alarms only – see Fig. 4.13.
Set the value, in engineering units, at which the alarm is to
activate.
Set the time hysteresis in seconds.
Hysteresis
Trip Point
Hysteresis
Alarm On
Alarm Off
Alarm On
Alarm Off