VESDA VLC-EX Product Guide
VESDA by Xtralis
6
www.xtralis.com
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 indication of the settings for the
ALERT, PRE-ALARM, and FIRE alarm levels.
Fault LEDs
Urgent:
Indicates a serious fault requiring immediate attention.
System:
Indicates a fault in the network.
Zone:
Indicates a fault in the VESDA Zone monitored by the Display
Module.
Power:
Indicates a fault in the power supply (If the GPI function is used).
Network:
Indicates a communications fault on VESDAnet.
Airflow:
Indicates abnormal air flow through the inlet pipe.
Filter:
This LED illuminates when the air filter requires changing.
Push Button Keys
These buttons enable various systems functions but can not be used to
configure the system. The buttons can be disabled by the Systems
Administrator.
Mode/Test (Dual Function):
Selects or toggles between the sensitivity,
smoke level and zone number modes. When depressed for more than two
seconds it performs a lamp test function.
Silence:
This button silences any alarm or fault warnings. It also stops the
LEDs from flashing to acknowledge a fault or alarm condition.
Reset:
Resets any latched alarms and faults on the detector. Any active
alarms or faults are reported again after the time delays have elapsed.
Isolate:
Isolates the detector from any external devices or systems (an
isolate indication will normally be raised at the Fire Alarm Control Panel
(FACP)).
Note:
It is normal practise to signal the Isolate condition to the Fire
Alarm Control Panel (FACP) using the Isolate relay.
Numerical Display
Sensitivity:
Shows the level of smoke that must be measured to illuminate
the entire bar graph and always corresponds with the fire alarm level.
Smoke Level:
Indicates the current level of smoke in the relevant VESDA
address and is represented as % obs/m or % obs/ft.
Zone Number:
This is the VESDA Zone number assigned to the Display
Module.
Note:
The Mode Button is used to select the parameters represented by
the Numeric Display (sensitivity, smoke level, zone number). The
values displayed in the numerical display represent the current
readings for that mode.
Table 2-2: Remote Display Module (continued...)
Summary of Contents for VESDA VLC-500-EX
Page 2: ......
