VESDA by Xtralis
VESDA VLP Product Guide
www.xtralis.com
7
Isolate LED
This LED is illuminated when the detector is Isolated and relays are de-activated disabling alarm outputs of
the detector. The display can be programmed to beep every 60 seconds.
Alarm Levels
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ALERT:
When illuminated this LED indicates that the smoke level is above the alert threshold. This
means the detector has identified very early stages of a fire condition and/or that the smoke level in the
area is above normal.
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ACTION:
When illuminated this LED indicates that the detected smoke level has passed the threshold
value fixed for Action, but is not intended to initiate a general fire alarm response procedure.
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FIRE 1:
When illuminated this LED indicates that the detected smoke level is above the threshold
value set to initiate a general fire alarm response procedure. This indicates a fire may be imminent or is
in progress. When interfaced with a Fire Alarm Control Panel (FACP) it can generate an automatic fire
alarm.
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FIRE 2:
When illuminated this LED indicates a fire is in progress. The detector can be interfaced with
an FACP to activate automatic suppression systems and evacuation procedures.
Bar Graph
The Bar graph is a 20 step indicator where each indicator represents an increase in the detected level of
smoke, relative to the preset fire alarm level.
Threshold Indicators
The illuminated LEDs represent visual settings for ALERT, ACTION, and FIRE 1 alarm levels. The FIRE 1
indicator is always at the top.
Fault LEDs
The Fault LEDs illuminate to indicate:
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URGENT:
A serious fault requiring immediate attention
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SYSTEM:
A fault affecting the network to which the Display Module is connected
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ZONE:
A fault in the VESDA Zone monitored by the Display Module
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POWER:
A fault in the power supply if the GPI function is used
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NETWORK:
A communications fault on VESDAnet
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AIRFLOW:
Higher or lower than acceptable levels of air flow through the inlet pipe(s)
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FILTER:
The air filter requires changing
Push Button Keys
These buttons enable various systems functions. These do not allow configuring the system. The buttons can
be disabled by the systems administrator.
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Mode/Test (Dual Function):
Selects modes on the numerical display - sensitivity, smoke level, or
zone number. When depressed for more than two seconds it performs a light test function.
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Silence:
This button silences any alarm or fault warnings. The LEDs stop flashing to acknowledge a
fault or alarm condition.
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Reset:
Resets any latched alarms and faults on the detector. Any active alarms or faults are reported
again after the time delays have elapsed.
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Isolate:
Isolates the detector from any external devices or systems (an isolate alarm will normally be
raised at the Fire Alarm Control Panel).
Note:
It is normal practise to signal the Isolate condition to the Fire Control Panel using the Isolate relay.
