The Morley IAS Loop Driver is a plug-in card for use in
the ZX series intelligent multi protocol fire alarm
control panels. This module allows ZX series control
panels to support input/output points from Morley-IAS
analogue addressable devices:
• Smoke Sensors (Ionisation and optical)
• Heat Sensors
• Monitor Modules
• Control Modules
• Isolator Modules
• Conventional Zone
• Addressable manual call points & pull stations
• Addressable sounders
The plug-in card provides power for and handles
communications to the addressable devices. The loop
driver continuously monitors the analogue values of all
sensors and displays this value on the panel as a
percentage of the alarm threshold value. Both the
alarm and pre-alarm threshold levels can be adjusted
from the control panel if required.
Up to 198 devices (99 sensors and 99 modules) can be
connected to a single loop driver. Each device has two
rotary decade switches to allow a unique address to be
• Compatible with ZX series intelligent multi protocol fire alarm control panels
• Provides one class-A or class-B loop
• Supports Morley-IAS analogue addressable sensors and modules
• Plug-in connection
• Double address detection
Dimensions (HxWxD): 90 x 54 x 18 mm
Weight: 32 gr. (1 oz)
Operating temperature: 0°C to 49°C
Humidity: 10% to 93%
Loop voltage : 24Vdc Nominal
Power consumption: 20mA
(excluding loop devices)
Maximum continous loop drive current:
440mA per loop
Maximum circuit ratings:
Resistance: 40 Ohm max.
Capacitance: 0.5ìF max.
Two diagnostic LED’s to indicate which end of the loop is being driven.
Screw terminals on the motherboard for a maximum cable cross sectional area of 2.5 mm2 (13 AWG) removable block.
Class A or class B with shielded, twisted wire.