Product specifications

Alarm and Event
3BDS011222-510 B 111
Alarm Shelving
Alarm Shelving is an integrated component of the Alarm & Event function in the
800xA system. Alarm shelving allows the operators to temporarily remove standing
or nuisance alarms from the main alarm list and places it on the shelve list.
The alarm does not reappear on the main list until it is removed from the shelf.
Unlike alarm disabling, where alarms are disabled for infinite time, shelving occurs
for a specified time and demands operator attention when the predefined time has
elapsed.
Shelving configuration defines how operators can shelve the alarms. There are two
ways to shelve the alarms:
• Standard Shelving.
Standard shelving allows the operators to shelve the alarms temporarily for a
specified time. Recurrences of the alarm because of a state change will not
appear in the main list until the specified time has elapsed.
• One-shot Shelving.
One-shot shelving will place the alarm in the shelf only once. When the state of
the alarm changes, the alarm is automatically removed from the shelf. Further
instances of the alarm will appear in the main list.
The shelving configuration includes configuring the following parameters in the
Alarm Shelving Configuration object under the Library Structure (refer to
Figure 44).
Alarm Shelving is a license-protected feature.