12.Alarms
12.1 Introduction
12.1.1 Introduction
The alarms page in PICUS shows all of the current alarms that have been triggered in the system.
See
Protections
in the
Designer's handbook
for more information about the alarm processing and handling
within the system.
Table 12.1
PICUS alarm symbols
Symbol
Alarm
condition*
Alarm
action**
Acknowledge
Notes
or
Active
Active
Unacknowledged
• Alarm condition is occurring.
• Alarm action is active.
• Alarm requires acknowledgement.
• Alarm requires action to clear the alarm condition.
or
Active
Active
Acknowledged
• Alarm condition is occurring.
• Alarm action is active.
• Alarm is acknowledged.
• Alarm requires action to clear the alarm condition.
or
Inactive
Active
Unacknowledged
• Alarm condition has cleared.
• Alarm action is active.
• Alarm requires acknowledgement.
• Alarm latch requires reset.
or
Inactive
Active
Acknowledged
• Alarm condition has cleared.
• Alarm action is active.
• Alarm is acknowledged.
• Alarm latch requires reset.
or
Inactive
Inactive
Unacknowledged
• Alarm condition occurred but has cleared.
• Alarm action is inactive.
• Alarm requires acknowledgement.
or
Active or
Inactive
Inactive
-
• Alarm has been shelved for a period of time.
• Alarm returns automatically after the period has
expired.
or
Active or
Inactive
Inactive
-
• Alarm has been marked
out of service
for an
indefinite period.
• Alarm does not return automatically and requires
returning to service.
or
Active or
inactive
Inactive
-
Alarm has been inhibited from occurring.
PPM 300 PICUS manual 4189341080 UK
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