Xtrails VESDA-E VEP-A00, Product Manual

Page: 103 / 109

VESDA-E VEP-A00-P Product Guide
www.xtralis.com 95
B Glossary
Term Description
A Aspirator Impeller type fan used to draw sampled air into the detector.
AutoLearn Smoke A feature which allows the detector to learn its environment
(background pollution, differences between day and night
operations within the facility etc) in order to set appropriate
alarm thresholds for that environment.
AutoLearn Flow A feature which allows the detector to learn its airflow
behavior in the installed environment. This information is
used by the detector to set appropriate airflow trouble
thresholds.
C Capillary Tubes Flexible tubes attached to the sampling pipe network for
sampling specific areas away from the sampling pipe.
Commissioning The process of making a smoke detection system
operational.
Condition For example, Fire 1 condition, Urgent Fault condition. The
detector is said to be in the Fire 1 condition when it has
detected a Fire 1 alarm.
D Disable When the detector is disabled the detector will not signal
alarms and faults via its relays. The detector signals that it is
disabled using Relay 1. (Disable was previously referred to
as isolate.)
E Event Log A data log of events (for example, alarms, troubles, user
commands) which is stored in the detector.
F Fault An urgent fault is a condition where the system requires
urgent attention as it may be unable to detect an alarm
condition.
A minor fault is a condition where the system requires
attention or maintenance, but is still able to detect an alarm
condition.
Fire Alarm Control Panel (FACP) A central monitoring and control system to which all smoke
detectors report their status.
G General Purpose Input (GPI)
Unmonitored An input to the detector which can be used to initiate a user
configurable action. Applying a voltage between 5V and
30VDC triggers the selected action.
General Purpose Input (GPI) Monitored The monitored GPI senses contact closure and is
configurable to initiate the same actions as the unmonitored
GPI. In particular, it can be used to monitor the power
supply.
H High Airflow Environment Where there are 10 or more air exchanges per hour.
High Level Interface (HLI) A communications interface between a VESDA device and
other pieces of equipment using another communications
protocol.
L Latching If the cause of a condition is removed (for example, smoke
decreases below the threshold) and latching is enabled, the
detector “remembers” the condition and holds the
corresponding relays and displays in the active state as
though the cause of the condition were still active.
Table B-1: Glossary