CHAPTER 12: LOCAL INTERFACE
ANNUNCIATOR PANEL
D90
PLUS
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
583
Figure 506: Annunciator alarm sequence
The annunciator states are described in the following table.
Table 44: Acknowledgeable alarm states
The visual indications are displayed as follows.
•
Off: grey text on a darker grey background.
•
On: user-configurable.
•
Fast flash: Alternating between the off state and the on state two times per second.
•
Slow flash. Alternating between the off state and the on state one time per second.
In the event of an alarm, the page containing the alarm will be promoted to active page. If
there are multiple pages with alarms, the page with the lowest page number is promoted.
If there are alarms on multiple pages, and alarms on some pages have already been
acknowledged (but not cleared) by the user, then the pages with active alarms move ahead
of the pages that have acknowledged alarms. The user will always have to navigate
through the pages of alarms to view them.
Display of alarm pages is prioritized according to active window (unacknowledged or
flashing alarm) and page number (for example, if two pages have an unacknowledged
alarm, the page with the lowest number will automatically be promoted as the displayed
page).
Annunciator configuration
Select the
Settings > Local HMI > Annunciator Panel
menu item to open the annunciator
configuration page.
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Sequence (initial
state)
Process (status)
Pushbutton
(input)
Sequence (final
state)
Visual indication
Normal
Normal
N/A
N/A
Off
Normal
Abnormal
N/A
Alarm
Fast flash
Alarm
Normal
N/A
Alarm
Fast flash
Alarm
Normal
Acknowledged
Normal
Off
Alarm
Abnormal
Acknowledged
Acknowledged
On
Acknowledged
Abnormal
N/A
Acknowledged
On
Acknowledged
Normal
N/A
Ringback
Slow flash
Ringback
Normal
Reset
Normal
Off
Ringback
Abnormal
N/A
Acknowledged
On