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VESDA by Xtralis
VESDA VLI Product Guide
www.xtralis.com
45
5.5.5
Relay Options
Relay options provide the ability to determine which alarm or fault conditions the programmable relays
respond to.
Figure 5-15: Relay Options
The Alarm relay is permanently assigned to Fire1, while the Fault Relay is permanently assigned to all fault
and other non-alarm conditions, with the exception of Minor Fault.
Three additional relays, CFG1, CFG2 and CFG3, are fully configurable. For example, CFG1 could be
configured to Alert, Fire2 or Minor Fault.
The normal state of the programmable relays can be set using checkbox in the
Normally Energized
row for a
relay where:
l
checked means the relay is energized.
l
unchecked means the relay is de-energized.
Relay
Default
State changes
Latch
Alarm
Fire1 (Alarm) Energizes when an alarm is initiated.
Unlatched
Fault
Fault
De-energizes when a fault is detected.
Latched
CFG 1,2,3
n/a
Configurable
Configurable
Table 5-4: Relay assignments and conditions to change state
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