Audible signals
• High priority: 3 signals followed by 2 more. The signal sequence is repeated with a 0.5
second pause and thereafter a 3 second pause.
• Function failure: Same signal as the high priority alarm or a constant signal, depending
on the kind of function failure.
• Medium priority: 3 signals, with a lower frequency than the high priority alarm. The
signal sequence repeats after a 6 second pause.
• Information: 1 signal with a low frequency. The signal is repeated after a 5 second
pause and stopped after 5 sequences.
Alarm signal sound pressure: Adjustable from 45 to 85 dB(A) measured at 1 m. Accu-
racy: ± 5 dB(A).
The power failure alarm sounds in the case of power failure.
If the external DC falls below the warning limit and it is the last power source, the Low
External DC warning is displayed.
If a battery that is the last power source falls below the warning limit, the Low Last
Power Source alarm is set.
6.1.2 Audible Signal Pause
The audible signal of an active alarm can be
paused for 60 seconds by pressing the
Audio Pause button. The audible signal can
be reactivated by pressing the Audio Pause
button again.
If a new alarm condition occurs during the
audio pause period, the audible signal will
be reactivated.
6.1.3 Audible Signal Presilence
The audible signal can be turned off for the coming 2 minutes.
CAUTION!
During the presilence period, any new alarms will only be indicated by the visual signals,
the audible signal will not be activated.
NOTE
Power Failure and Function Failure alarms are not affected by presilence and, if triggered,
will sound during the presilence period.
Alarms 89
Doc. 006150 M-1 User manual
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