1, 2 and 4 loop, networkable,
analogue addressable, fire alarm
control panel
Product Description
The Morley-IAS loop isolator module is used on the
Morley-IAS intelligent fire alarm control panels to
protect the system against wire-to-wire short circuits on
the analogue addressable loop wiring.
The fault isolator modules should be placed between
groups of sensors on the loop wiring to protect the loop
if a short circuit fault occurs. If a short circuit fault
occurs, the two isolators located either side of the short
circuit fault will automatically sense the voltage drop,
open their switches and remove the devices from the rest
of the loop. If the line voltage then rises above a fixed
threshold, indicating that the short circuit fault is
removed, then the isolator module will automatically
restore the power to the isolated group of devices.The MI-DISO isolator uses a unique mechanical
design allowing each module to be mounted
either in a wall box or on a DIN rail. Irrespective
of the mounting method chosen, the address
switch is both visible and accessible for selection.
To help engineers in the maintenance and fault
finding process, both the LEDs and the address
switches can be viewed without having to remove
the cover of the mounting box. The LEDs, being
multi colour, provide diagnostic information
regarding the status of the isolator.
