AAECU AlarmLine II Analogue EN Control Unit

Interface & Programming

The AAECU provides LED indications as well as a LCD. Internal

pushbuttons allow for easy configuration without the need for a PC.

Configuration via PC is also supported via a USB connection and the

optional configuration software AAECU-PCC.

Pre-Alarm and Alarm thresholds can be set through simple menu

options. Initial set-up is done by measuring and entering the calibration

resistance of the sensor cable, as well as the 3 letter cable parameter

identifier.

Volt free changeover contacts are provided inside the control unit for

Pre-Alarm and Alarm signaling to a main fire alarm control panel or

BMS system. A failsafe opto-isolated phototransistor fault output is

also provided.

No user controls are provided on the control unit. An isolated input is

provided enabling remote reset functionality.

Operation

As well as monitoring the LHD sensor cable for changes in

temperature, the control unit also monitors for open and short circuit

faults along the cable ensuring notification if the cable becomes

damaged.It is fitted with its own internal temperature monitor and

should the temperature within the controller enclosure reach 100°C

(212°F), an alarm will be signaled.

Each control unit may have up to 500m (1640ft) of LHD sensor cable

connected to it, acting as a single detection zone.

Details

The AAECU is supplied with an End-Of-Line unit (AAECU-EOL)

included. The End-Of-Line unit (AAECU-EOL) is also available

separately as a spare part.

A junction box (AAECU-JUN) is also available separately, if two pieces

of cable needs to be joint.