ABB SM1000 User Manual page 60

...4 CONFIGURATION
...4.6.4 Alarm Configuration
Note. This tab is displayed only if the Recording Channel source is an Analog signal.
Digital i/p
Setup Analog i/p
Off
Alarm type
20 Characters
Tag
20000
Trip
1000
Hysteresis
Off
Time hysteresis
0 Secs
Delay time
58
Alarm A
Totalizer
Set the alarm type:
High/Low process – see Fig. 4.12
High/Low latch – see Fig. 4.13
High/Low annunciate – see Fig 4.14
Fast/Slow rate – see Fig. 4.15
Delayed High/Low process – see Fig. 4.16
Enter an Alarm Tag to identify the alarm when it is displayed
in the Chart, Process and Alarm Event views.
Set the value, in engineering units, at which the alarm is to
activate.
Note. Process, Delayed High/Low process, Latch and
Annunciate alarms only.
Set the hysteresis value, in engineering units.
Note. Process, Delayed High/Low process, Latch and
Annunciate alarms only.
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. Process, Latch and Annunciate alarms only.
Output
0 40 0
Time in seconds (s)
Timer Timer Timer
Started Reset Started
Set the period of time for which to delay alarm activation after
the enable signal is switched on. Once the delay time has
expired, the alarm operates in the same manner as a
standard High/Low process alarm.
Note. Delayed High/Low process alarms only.
Hysteresis
Trip Point
Hysteresis
Alarm On
Alarm Off
Alarm On
Alarm Off
Alarm
Trip Point
70 130
Alarm On
Alarm Off
Hysteresis Timer
Time Reset
Elapsed