17
Morley-IAS
996-203-000-2, Rev. 02
Figure 13 - Loop Wiring with Isolators
DO NOT loop the wiring under any terminals. Break the wire run to maintain
supervision.
-
It is recommended that short-circuit isolators be installed. Install the isolators at strategic points in
the loop (i.e. zonal boundaries) to prevent an external short circuit from removing more than 32
addressable points from the system. Refer to the diagram above for information.
Note:
The loop driver modules have built-in isolators so it is not required to place isolator modules
on the outputs of the FACP. The Loop functions satisfactorily without isolators fitted, however, this
method is not recommended.
3.4.5.4
Unused Loops
-
If one of the loops is not to be used, the
outputs must be connected to the inputs at
the terminal block.
-
If the loop wiring is left open, the panel will
report an open-circuit wiring fault even
though there are no devices connected to
the loop.
Figure 14 - Loop Wiring - Unused Loops
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