154 • SMP Gateway User Manual
Click General Ack./Clear to acknowledge all alarms and clear the alarm display of all
data points that have returned to their normal condition.
OR
Press Acknowledge to acknowledge the alarm. Again, if more than one alarm can be
acknowledged, the alarm that will be acknowledged depends on the alarm
acknowledgement rule selected in SMP Config for the Alarms page. If you selected
Alarms can be acknowledged and recalled in any order, you must select the alarm to
acknowledge before pressing the button.
Press Clear, in order to clear the alarm display of the data point that has returned to
normal. The alarm acknowledgement rule defined in SMP Config also applies to clear
(recall) operations.
If an alarm is triggered more than once for a given alarm input before it can be handled, the ‘x’
character will be appended either to the ‘A’ or ‘R’ character to notify the operator about this
matter.
16.6.3 Blocking Alarm Inputs
For some reasons, you might want to temporarily deactivate some alarm conditions. Such behavior
may be required, when a certain part of the substation is under maintenance, for example. For this
matter, the Annunciator offers an alarm input blocking feature. When an alarm input is blocked, it
no longer triggers alarms, even when alarm conditions are met.
You can only block an alarm input that is currently displayed in the Alarms page. When it is
blocked, the alarm input is moved to the Blocked page, and it will not appear in the Alarms page
until it is reactivated. In fact, alarms will simply no longer be triggered for this input.
To block an alarm input:
From the Alarms page, select the data point that you want to block.
Press Block.
Select the Blocked page. The blocked alarm input should be displayed here.
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