FBT 37483_VAIE2550_manual1.pdf - Manuale (Pagina 78)

6-1
OPERATING CONDITIONS AND TERMINOLOGY
UK
6.1 GENERAL DEFINITIONS
Following is a list of the signalling modes of the operating conditions of the system and of definitions used in the rest of the manual, completed
by indications of a general nature:
6.1.1 Signalling of operating conditions
The VAIE 2250 system is structured to signal the different operating conditions on the basis of the following definitions:
“Quiescent condition” (ALARM – FAULT – DIS – SYS LED’s Off)
Normal operating condition, with no current failures or emergencies. This status enables the sources of music and voice to be managed
for service announcements.
“Alarm Condition” (ALARM LED illuminated)
This operating condition signals the current presence of at least one alarm signal, either pre-recorded or live, on at least one output zone.
The “Alarm Condition” can be activated in the form of an Automatic Emergency from an external peripheral unit connected to the Control
Inputs or of a Manual Emergency through an authorised operator. During an “Alarm Condition”, the functions of the music sources and of
the voice services referred to the quiescent condition are not operational. In a 12-zone system with two interconnected VAIE 2250 units,
generally speaking an “Alarm Status” is activated on both units, regardless of which output zone has triggered the alarm.
“Fault warning condition” (FAULT Led illuminated)
This operating condition signals the presence of at least one current failure, detected by the internal diagnostics system.It is accompanied by
an acoustic signal (buzzer) indicating the failure. Depending on the causes of the failure, the system may in any case perform the functions
relating to the “Quiescent” and “Alarm” conditions.
“Faulty status” (FAULT LED flashing)
In a 12-zone system with two interconnected VAIE 2250 units, it signals the presence of at least one current failure referred to the other
remote VAIE 2250 unit or to the items connected to it and subjected to monitoring. It is accompanied by an acoustic fault alarm (buzzer). If
the causes of the fault enable this, the system may in any case continue to perform the functions referred to the “Quiescent” and “Alarm”
statuses.
“System Fault” (SYS LED illuminated)
This operating condition signals that the system is blocked as the result of a temporary or permanent malfunctioning of the CPU, detected
by the watchdog. It is accompanied by an acoustic signal (buzzer) indicating the failure. During a System Fault, the functions relating to the
“Quiescent” and “Alarm” conditions are not operational.
“Disablement condition” (DIS LED illuminated)
This operating condition signals that the Alarm signals for at least one output zone have been set to a Disablement condition. The system can
in any case carry on the functions pertaining to the “Quiescent” condition for all the zones and, only for those zones that are not disabled,
the functions pertaining to the “Voice Alarm Condition”. In a 12-zone system with two interconnected VAIE 2250 units, a “Disabled Status”
is signalled on both units, regardless of which output zone is affected.
“Automatic Emergency” (CONTROL INPUT STATUS Display with zones active)
This indicates a sequence of operations performed from an external peripheral unit connected to the Control Inputs. Depending on how
these inputs are programmed, the “Voice Alarm Condition” or an Alarm Reset are activated.
“Manual Emergency” (LED of the EMERGENCY button ON/flashing)
This procedure is performed by an authorised operator using the manual controls, to activate VES sources or to reset the Alarms (Manual Alarm
Reset). The operations carried out in the Manual Emergency mode have a higher priority than those activated by an Automatic Emergency.
A VAIE 2250 unit or an emergency unit on which the EMERGENCY LED is illuminated is enabled for use for activating VES sources or for
resetting the alarms. A VAIE 2250 unit or an emergency unit on which the EMERGENCY LED is flashing indicates that a Manual Emergency
has been activated from a remote station.
Dual / single-channel operation
If the amplifiers for the “Music” and “Voice” channels are both operational, the VAIE 2250 system enables two signals to be played out in
different zones, operating in a dual channel mode, as follows:
- In the “Quiescent condition”: BGM source selected via the MUSIC MENU (out at 0dB = 70V constant voltage) and PA source with the
highest priority (out= 100V constant voltage).
- In the “Voice Alarm Condition”: ALERT message (out= 100V constant voltage) and EVAC message (out = 100V constant voltage).
- In the “Voice Alarm Condition”, with the extension amplifier for a system with a total output power of 490W: ALERT message (out= 70V
constant voltage) and EVAC message (out= 100V constant voltage).
By default, the signal from the emergency microphone is always sent to a single channel, and without any other simultaneous messages.
If an amplifier assigned to the “Voice” channel fails, the VAIE 2250 automatically switches the “Music” amplifier to replace it, and activates
operation in the single-channel mode, thus enabling one signal at a time to be sent out, as follows:
- In the “Quiescent condition”: only the active PA source with the highest priority (out= 100V constant voltage). The “Music” channel will
not be available and the wording “NOT AVAILABLE” will appear on the Music menu display.
- In the “Voice Alarm Condition”: only one VES source at a time, either an ALERT or EVAC message or the Emergency microphone (out=
100V constant voltage). The second emergency channel will not be available and the wording “only one channel available - FAULT
CONDITION” will appear on the display.
For further information consult Section 9, “Fault warning condition”.