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Analogue Control Unit - PC Programmable


Interface and Programming
The AACULP provides LED indications only and requires a PC to configure the control unit.
 
Pre-Alarm and Alarm thresholds can be set through simple menu options with no need for any graphs or nomograms. Initial set-up is done by measuring and entering the calibration resistance of the sensor cable removing the need to know the sensor cable length.
 
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 opt-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 100oC, an alarm will be signalled.
 
Each control unit may have up to 500, of LHD sensor cable connected to it, acting as single detection zone. When the LHD sensor cable and the control unit are installed in different areas, a suitable interposing cable can be used to make the electrical connection between them.
  • UL521 and CE approval
  • Up to 500m of sensor cable per zone
  • Separate pre-alarm and alarm signals
  • Easy programmable interface
  • Enclosure temperature alarm
  • IP65 rated enclosure
  • No nomograms or charts required
  • Specifications: Operating Voltage 20-28VDC
  • Current consumption: 
    Quiescent: <70mA
    Fault: <70mA
    Pre-Alarm: <80mA
    Alarm: <80mA
    Pre-alarm and alarm: <100mA
  • Outputs:
    Pre-Alarm (Form C Relay resistive load): 2A @ 30VDC / 0.25A @ 250VAC (62.5VA)
    Alarm (Form C Relay resistive load): 2A @ 30VDC / 0.25A @ 250VAC (62.5VA)
    Fault (Opto-isolated phototransistor output): Max. 50V @ 20mA
  • Inputs:
    Remote reset (isolated): 5s pulse 20-28VDC
  • Zone length: 30.5m to 500m
  • Mechanical: Material Polycarbonate
  • Colour: Light grey
  • Weight: 804g
  • Dimensions: (W x H x D): 182 x 180 x 90mm
  • Environmental:
    Operating temperature (max): 0 to ±50oC
    Relative humidity: 0% to 95% (Max 75% RH for <75m cable & 54oC alarm setting)
  • IP rating: IP66
  • IK rating: IK08
  • UL521 and CE approval
  • UL521 and CE approval
  • Up to 500m of sensor cable per zone
  • Separate pre-alarm and alarm signals
  • Easy programmable interface
  • Enclosure temperature alarm
  • IP65 rated enclosure
  • No nomograms or charts required
  • Specifications: Operating Voltage 20-28VDC
  • Current consumption: 
    Quiescent: <70mA
    Fault: <70mA
    Pre-Alarm: <80mA
    Alarm: <80mA
    Pre-alarm and alarm: <100mA
  • Outputs:
    Pre-Alarm (Form C Relay resistive load): 2A @ 30VDC / 0.25A @ 250VAC (62.5VA)
    Alarm (Form C Relay resistive load): 2A @ 30VDC / 0.25A @ 250VAC (62.5VA)
    Fault (Opto-isolated phototransistor output): Max. 50V @ 20mA
  • Inputs:
    Remote reset (isolated): 5s pulse 20-28VDC
  • Zone length: 30.5m to 500m
  • Mechanical: Material Polycarbonate
  • Colour: Light grey
  • Weight: 804g
  • Dimensions: (W x H x D): 182 x 180 x 90mm
  • Environmental:
    Operating temperature (max): 0 to ±50oC
    Relative humidity: 0% to 95% (Max 75% RH for <75m cable & 54oC alarm setting)
  • IP rating: IP66
  • IK rating: IK08
  • UL521 and CE approval