FBT 37483_VAIE2550_manual1.pdf - Manuale (Pagina 122)

9-1
FAULT WARNING CONDITION
UK
9. FAULT WARNING CONDITION
The VAIE 2250 system has a diagnostic routine that monitors constantly availability of the VES sources and the soundness of the critical
path of the signals providing the functions in emergency conditions.
9.1 SYSTEM OPERATION AND SIGNALLING IN GENERIC CONDITIONS
9.1.1 System signalling due to an existing “Fault Warning Condition”
If, with the system in its normal “Quiescent Condition”, the monitoring system detects a cause of a failure, it promptly activates signalling
of a “Fault Warning Condition”, as follows:
• the FAULT LED (visual signal) will light up
• a BEEP (acoustic signal) will be heard via the monitoring loudspeaker
• the local CONTROL OUTPUT contacts (remote signalling), if programmed, will be activated
• the failure condition (FAULT) will be indicated in the status label on the Report FAULT panel.
N.B.: In a 12-zone system, if the fault concerns items of equipment pertaining to the other VAIE 2250 unit, the FAULT LED will flash.
9.1.2 System signalling following cleaning of “Fault Warning Condition” (RESUMED)
If the cause of the failure is cleared automatically, without any action on the part of the operator, the system will return automatically to its
“Quiescent Condition”, resetting all the signals described above and storing the last failure that occurred as follows:
• The word RES will be shown on the status label of the Report FAULT panel indicating that the failure has been cleared (RESUMED)
(see point 8.5.1).
9.1.3 Resetting the signal following clearing of a failure (FAULT RESET)
To reset a signal referred to a failure that has been cleared and stored:
• From the OPERATOR menu, go to the FAULT panel (see point 8.6.5)
• Carry out a MANUAL RESET of the failure signal as indicated under point 8.6.6.1.
Note: In the event of failure of a loudspeaker line due to a short circuit, once the line is repaired it is necessary to carry out a MANUAL
RESET of the failure from the OPERATOR menu, in order to re-activate the audio signal on the output of the line concerned.
9.1.4 Recommended procedure during a Fault Warning condition
The procedure to be followed during a Fault Warning condition is the following:
• From the INSPECTION menu, go to the FAULT panel (see point 8.5.1)
• Reset the acoustic signal manually (RESET BEEP - see point 8.5.1.1).
• Check the category of the FAULT diagnosed and go to the appropriate sub-panel.
• Check the cause of the failure and, if possible, restore correct operation following the instructions contained in the table referred to the
sub-panel (see points from 8.5.1.3 to 8.5.1.8).
If upset is successfully cleared, termination of the Fault Warning condition will be signalled as follows:
• The FAULT LED will extinguish.
• The output contact involved, if any, will be de-activated.
• The word RES will appear in the status label of the Report FAULT panel to show that the failure has been cleared (RESUMED).
Upon completion of the procedure, it is advisable to reset the signal for the failure that has been cleared, as indicated under point 9.1.3.
9.2 SYSTEM OPERATION AND SIGNALLING IN CASE OF FAILURE OF AN AMPLIFIER
In the event of failure of one of the two internal amplifiers of the VAIE 2250 or of the external amplifier, if any, in addition to signalling the
failure as indicated under point 9.1.1, the system will switch operation of the system to the single-channel mode, stopping broadcasting via
the Music channel. Operation in the single-channel mode is signalled as follows:
• With the system in the “Quiescent condition”: The wording “NOT AVAILABLE” will appear on the MUSIC panel in the field of the
display dedicated to the music vu-meter and to the BGM Source.
• With the system in the “Voice Alarm Condition” due to an Automatic Emergency: The wording “Only one channel available
– FAULT CONDITION” will appear on the display for the CONTROL INPUT STATUS panel. In the event of a contact programmed for
simultaneous broadcasting of two messages, the status label of the zones intended to receive the Alert message that can no longer be
broadcast will indicate FAIL (Failure).
• With the system in the “Voice Alarm Condition” due to a Manual Emergency: The wording “Only one channel available – FAULT
CONDITION will appear on the display of the EMERGENCY panel. If the two messages were being broadcast simultaneously, the
status label of the zones intended to receive the Alert message that can no longer be broadcast will indicate FAIL (Failure).
9.3 SYSTEM OPERATION AND SIGNALLING IN THE EVENT OF A SPEAKER LINE FAILURE
A failure of the speaker line may be due to various different causes. The associated signalling and the activities required are described under
point 8.5.1.3 Panel LOUDSPK. LINE FAULT. If the problem is due to a variation in the impedance, the VAIE 2250 will continue to broadcast
the audio signal output from the zone. If it is due to a short circuit on the line, the system will disconnect the failed line and broadcast the audio
signal on the other line serving the same zone.
• with system in “Voice Alarm Condition”
Whatever the cause of the failure on the speaker line may be, and even if no message has been activated to be played out to the failed
zone, the word FAIL will appear on the CONTROL INPUT STATUS panel and on the EMERGENCY panel, on the zone status label. The
wording FAIL has priority over the indication of the current message sent to the output zone.
9.4 RESETTING THE “BEEP” IN SYSTEM FAULT CONDITIONS
To reset the “beep” signal, turn the +/- knob repeatedly in a clockwise direction until the beep is silenced.