INIM Electronics Previdia Compact Manual For System Configuration, Commissioning And Maintenance page 14

3.4.2 Loop diagnostics
Diagnostics
The button in the Loop configuration menu accesses the section for the loop diagnosis.
The upper left side of the template [A] shows some of the
electrical data of the loop.
• Loop status: indicates whether the loop is a closed ring
circuit or open
• Loop O Terminal: indicates eventual short-circuits or
anomalies immediately on the loop output terminals
• Loop I Terminal: indicates eventual short-circuits or
anomalies immediately on the loop input terminals
• Loop Consumption: indicates the voltage draw of the
loop
• Cable resistance: indicates the resistance value of the
cable
The upper right side of the template [B] shows the number
and type of devices currently in configuration.
The lower part [C] provides the following buttons:
• Loop reset, button to reset the loop and reassess its status.
In the event of a "Loop open" fault, it will be necessary to tap on this button in order to check whether or not the
interruption has been cleared.
• Scan, button to start a scan on an already enrolled loop.
The procedure verifies whether there are any connected devices which are not in the configuration, if devices have
been lost or if there are any other anomalies. The results of the scan can be viewed in the section on the top right of
the display.
• Show topology, button which steps to the layout screen
of the devices in the configuration of the already enrolled
loop.
The layout shows all the devices which are connected to
the loop and how they are connected to one another.
Any devices in alarm or fault status will be outlined in red or
yellow [D].
The selection of a device accesses the management page
of the device itself
The Update button [E] refreshes the screen by updating any
alarms and faults signalled by the devices shown (restored
fault events will not be shown).
3.4.3 Loop Parameters
Parameters
The button on the loop configuration menu allows you to
set:
• Device protocol
• Wiring type (2 or 4 wires)
Note:
If you are making a two-wire connection, you can install
a maximum of 32 fire-alarm devices on the loop
(detectors or call points).
14
Fire detection and extinguishant system
Loopx: loop yyy
Loop status: closed
Loop O terminal: OK
Loop I terminal:
Loop consumption (mA): 15
Cable resistance (Ohm): 0
Rearm Scan
Access
level:3
001 002 003 004
013
D
023 024
E
Update
Access
level:3
Inim
4 wires
Generic: 1
A
Detectors: 44
IN Modules: 12
OUT Modules: 5
IN/OUT Modules: 0
Sounder/flashers: 3
Call points: 8
C
Show layout
005 006 007 008
014 015 016 017
025
D
Esc
Esc
Set
System Parameters
B
Esc