A1444 Addressable Loop Interface
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Introduction
The Control Equipment range of loop interfaces are designed to allow remote monitoring of 3 voltage free contacts via the loop and communicate their status to the panel using analogue values.
The A1444 Basic Interface is a stand alone unit deriving its power from the loop and hence needs no external power supply.
The A1444 can also be used as a zone monitor interfaces with the addition of the A1447 Zone Monitor Unit (and external power supply). This unit plugs onto the A1444 and provides monitoring on Inputs 1 & 2 for fire, fault and quiescent conditions, with Input 3 operating as an auxiliary fault input.
The A1444/47 can also be used to provide remote switch monitoring with fault detection if the inputs being monitored are remote from the interface.
Technical Specification
Supply Voltage: 17-25V loop derived
Quiescent Current: 1.0mA loop derived
Input Terminals: Loop connections 3 inputs for voltage free contacts External power supply
Analogue Values: 64 - Input 1 operated;
48 - Input 2 operated;
4 - Input 3 operated;
16 - Quiescent condition;
Part Numbers
2500/236 A1444 Basic Interface
2500/246 A1444 Basic Interface Boxed
2500/249 A1444/47 Basic Interface c/w Zone Monitor Unit Boxed
2500/255 A1444/47 Basic Interface c/w Zone Monitor Unit & PSE Boxed
2500/239 A1447 Zone Monitor Unit only