Smart Connect
Single Loop Touch Screen Panel
Doc: GLT-229-7-1
76
Issue: 3
Date: 12/05/2017
12.1 LOOP WIRING FAULT FINDING
The Smart Connect panel will monitor the addressable loop for open or short circuit faults. The panel`s Loop Isolator monitors for
both Open and short circuit faults, to the faults are reported as ISOLATOR FAULTS, with a Description. The faults reported are:-
Break in –
ve wire
To locate a cable break, re-run the loop search, and
check the detailed loop report after the search is
complete.
Break in
+ve wire
Use the same method to locate a break. In the
example above, the break is between address 150
(which is seen from side A only), and address 152
(which is seen from side B only)
(This applies if the loop is addressed sequentially)
Short circuit on side
A of the loop
If the panel reports a loop short side A ,
then there is a short circuit fault on the
loop, somewhere between the panel (side
A), and the first device with a short circuit
isolator on the loop.
Short circuit on side
B of the loop
If the panel reports a loop short side B ,
then there is a short circuit fault on the
loop, somewhere between the panel (side
B), and the last device with a short circuit
isolator on the loop.
