VESDA by Xtralis
VESDA VLP Product Guide
www.xtralis.com
27
6.1.3
Typical Wiring To Fire Alarm Control Panel (FACP)
The diagram below shows the correct way to wire VESDA laser detectors to a conventional fire alarm control
panel (FACP). It also shows where an End Of Line (EOL) resistor is correctly installed.
Normally Closed (NC)
Common
FIRE 1
(C)
(NO)
Normally Open
Normally Closed (NC)
Common (C)
ACTION
(NO)
Normally Open
Normally Closed (NC)
Common (C)
FAULT
(NO)
Normally Open
GPI
(
)
Set to reset
Dete tor
c
(NC)
(C)
Reset
(NO)
Input
Short = Fire
Open = Fault
To next detector
or End of Line resistor (EOL)
Fire Panel (FACP)
+
-
5-30VDC
+
-
The relay is
energised
on reset.
Figure 6-5: Typical wiring to a fire panel with EOL
6.1.4
Wiring To an Addressable Loop Module
This wiring example is for wiring VESDA detectors to a typical Addressable Loop module 3 input 1 output.
These are example drawings. Refer to the appropriate product manual for the exact wiring details of the third
party equipment.
Normally Closed (NC)
Common (C)
FIRE 1
(NO)
Normally Open
Normally Closed (NC)
Common (C)
ACTION
(NO)
Normally Open
Normally Closed (NC)
Common (C)
FAULT
(NO)
Normally Open
GPI
“R
”)
(Set to
eset
Dete tor
c
(NC)
(C)
Reset
(NO)
Fire Input
EOL* = Normal
Short = Fire
Open = Wiring Fault
3
1
Inputs
Output Loop Module
To FACP
To Next Detector
Pre Alarm
EOL* = Normal
Short = Fire
Open = Wiring Fault
Fault Input
EOL* = Normal
Short = Detector Fault
Open = Wiring Fault
EOL*
EOL*
EOL*
*EOL: End of Line Resistor
The relay is
energised
on reset.
Relay shown energized which
is the no-fault condition
+
-
5-30VDC
+
-
Figure 6-6: Addressable Loop Module with EOL
