Digital fire detection control panel
COMPACT LYON PLUS
8
FIRE PROTECTION MANUFACTURER
C / Compositor Wagner, 8 –P.I. Can Jardí 08191 - RUBÍ (Barcelona) ESPAÑA.
Tlf.: +34 935 862 690 –
Display
CPU
Switching
Power Supply
Power supply
Figure 1.
Layout of circuits in the control panel
1.5. – Loop Elements Capacity
The number of devices that it is possible to connect to the loop is calculated by the software of loop
elements capacity calculation.
In this software must be entered the information of the control panel model, wire length (m), cable
section (mm2), arrangement of elements in the wire and number of devices of each type connected in
that loop.
The arrangement of elements in the wire option has
two possibilities
;
"
Distributed
" refers to the fact that the elements are distributed along the cable that is in a closed loop.
It offers a fast and transparent way to calculate general closed-loop operating situations;
"
Point
" refers to the calculation in open line with all the elements located at the end of the cable length
defined in the program. It allows calculation of complex element distribution situations or open-line
operation.
The software returns the electrical load of the system in % , number of equivalent elements and relays in
the loop. It must not be exceed the limits establieshed in the Maximum devices per control panel table
(loop limits and control panel limits).
INSTALLATION EXAMPLE
An installation requires 72 A30XHAS sensors, 9 PUCAY manual call points and 10 addressable
sounders SIRAY with standard sound level. These elements are distributed over a 500 m long copper
cable with a 2x1.5 mm section in a closed loop over the central unit.
This information is entered into the loop element capacity calculation software as indicated in the
attached figure.
The software returns the following information about the calculated loop:
- Loop load in %. Do not exceed 100% capacity. An adequate design should contemplate a
certain margin to the maximum capacity (for example 10%).
- Number of elements: allows checking that the maximum capacity of elements in the loop is
not exceeded (226 in Lyon and Zafir control panels, 99 in C-Lyon).
- Number of relays: allows to check that the maximum capacity of relays per loop is not
exceeded (32 in Lyon and Zafir control panels, 16 in C-Lyon)
