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.
• DIN rail mounting option
• Surface mounting option
• Plug in connectors
• Tri-colour LED status indication
• Address selector switches visible in 2 planes
• LED status visible in 2 planes
• Approved to GEA GEI 1-082 and CEA GEI 1-084
mechanical
Dimensions (mm) 93 x 94 x 23 (H x W x D)
Weight 62g
Operating Temperature -20 ºC to +60 ºC
Humidity 0 to 95% maximum non-condensing
electrical
Operating voltage 15 to 30 Vdc
Standby current 200μA at 24 Vdc maximum
Fault detection delay 100 to 400 mS
On resistance 0.065Ù at 15 Vdc maximum
Terminal Wire 2.5 mm2 maximum