4. Alarm pages
The XBT-L1000 software allows you to define the properties of the alarm pages
Status line
It is identical to the one displayed on the application pages ( see § 3.
Application pages, Page 20 ).
Alarm indicating
- It is possible to force the operator to acknowledge the alarms so that they can be erased from the list of active alarms; this is useful for transient alarms.
- The terminals have a relay output whose contact is closed when an alarm appears. This function can be configured for each alarm page.
Advantages of alarm pages
Note
- It is possible to assign a priority to an alarm page (1 to 16, with 1 as the highest priority).
- It is possible to record (log) alarm pages to help control system troubleshooting.
- The alarms are time-stamped.
- Alarms may be configured to require an operator to acknowledge an alarm before continuing process operation; this is useful for transient alarms and troubleshooting.
- The terminals have a relay output whose contact can be closed when an alarm appears. This function can be configured for each alarm page.
This relay opens upon a power loss. The relay's contacts are normally open
(N.0.).
A - 28
Graphic Magelis
