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User guide
Loop loading
(VIG-LPC-EN and COMPACT-LPC-EN)
This document shows how to determine the loop load and loop cable length for a Post March 2014 Loop Card
fitted in a Vigilon panel:
VIG-LPC-EN (for use in Vigilon 4-6 loop panels only)
COMPACT-LPC-EN (for use in Vigilon Compact panel only)
A precise battery standby calculation result is obtained using the 'Battery standby and loop load calculator'
tool. The tool can be downloaded from www.gentexpert.co.uk website, accessible to registered users.
Distributed alarm device load
This is where the alarm load is distributed along the entire length of the loop and when using:
1.5mm² cable, the loop length can be up to 2Km with up to 200 devices and up to 400mA alarm current for standard
mode of loop card operation / 800mA alarm load for enhanced mode of loop card operation.
2.5mm² cable, the loop length can be up to 2.5Km with up to 200 devices and up to 400mA alarm current for
standard mode of loop card operation / 800mA alarm load for enhanced mode of loop card operation.
U
se table 1 to calculate the loop alarm load.
Always use the 'Battery Standby and loop load calculator tool' to determine loop load and panel battery standby.
Lumped alarm devices load
If the alarm devices are lumped together on a loop circuit then there is a trade off between the number of alarm devices and loop
cable length possible, which must be calculated.
Use the 'Battery Standby and loop load calculator tool' to determine the precise loop length, loop load and panel standby. In
the absence of the tool a rough method to determine loop length and loading only is shown here. Use table 1 to determine alarm
load and respective table 2, 3, 4 or 5 to determine loop length and loop load.
What are Lumped and Distributed alarm device loads?
Example of Lumped alarm device load
Where 35% of the alarm devices
lumped together in 1/4 segment
B
AV
4
S
A
Vigilon
Compact panel
shown
AV
AV
key:
- Audio Visual S4 and S3 devices
4
S
S
3
System with VAD only devices, S4 Sensors and S4 Sensor Sounders is capable of up to 0.8A alarm load.
4188-1075 issue 3_Part 2_08/14
AV
AV
4
S
3
S
are
,
,
or
D
A
C
B
AV
S
4
S
3
4
S
AV
AV
AV
4
4
4
S
S
S
This example
shows lumped devices
along cable length
Example of Distributed alarm device load
Distributed alarm devices
spaced along the entire length of the loop cable
of a loop.
from end to end.
C
AV
4
4
S
S
AV
4
S
4
S
D
.
D
- S4 Sensor only devices
4
S
AV
AV
4
S
are evenly
3
S
AV
AV
AV
4
4
S
3
S
S
4
S
S
3
S
AV
4
S
Vigilon
Compact panel
shown
- Other system devices
4
3
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