Figure 8.5
Example of the effect of the horn silence push-button on the horn output
Silence
pressed
Silence
pressed
Alarm 1
Horn
(1)
(3)
(2)
CAUTION
The horn silence push-button on the display unit does not affect the acknowledgement status of any alarms.
More information
See
Alarms
,
Horn outputs
in the
Designer's handbook
for more information on the configuration of these outputs.
8.2.4 Reset latched alarm(s)
When all latched alarms'
Alarm conditions
are inactive and the latched alarms are acknowledged, latches can be reset. Until a
latched alarm is reset, the
Alarm action
(protection) remains active.
CAUTION
You cannot reset any latched alarms if a latched alarm's
Alarm condition
remains active and alarms with latches exist that
have not been acknowledged.
Reset all cleared alarm latches
INFO
Resetting clears all alarm latches for all the latched alarms where the
Alarm condition
has cleared.
To reset all cleared alarm latches, perform the following steps:
1. Select
Alarms
to view the alarm list.
2. Select
Reset latches
Reset latches
.
3. All alarm latches, that can be reset, are reset.
8.2.5 Shelve alarm(s)
Most alarms on the alarm display can be shelved for a given period of time, if required. After the period of time expires, the controller
automatically returns the alarm to the previous state and rechecks the alarm condition.
INFO
If the user logged on does not have the necessary permission access to the
Shelve
option, you are prompted to log on.
CAUTION
Shelving alarms is useful during commissioning or service. Do not shelve alarms without good reasoning, as the alarm
protection becomes inactive during the shelving.
Shelve an alarm
To shelve an alarm, perform the following steps:
1. Select
Alarms
to view the alarm list.
OPERATOR'S MANUAL 4189341099G UK
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