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EN 54-22 Control Unit


Interface and 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. Analogue EN Control Unit Alarmline II Series Each control unit may have up to 500m (1640ft) of LHD sensor cable connected to it, acting as a single detection zone. detection per control unit. The controller is compatible with any conventional or addressable fire alarm panel or other building management system. 

Details
The AAECU is supplied with an End-Of-Line unit (AAECUEOL) 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.
  • VdS EN54-22:2015/prA1:2007. EN54-22 is a referenced standard in AS 1670.1 
  • Up to 500m of sensor cable per zone
  • Separate pre-alarm and alarm signals
  • Easy programmable interface 
  • Enclosure temperature alarm 
  • IP65 rated enclosure
  • General:  
    Status indication: 4 x LED’s (power, fault, pre-alarm & alarm)
    User interface: LCD display with internal configuration buttons
    Reset voltage: 5-28 VDC for minimum
    Connectivity: 2-wire RS-485
    Modbus: RTU or ASCII 
  • Electrical: 
    External Power consumption: 2 W maximum
    Operating voltage: 20 to 30 VDC
    Current consumption: 39 mA at 30 VDC 
  • Detection:  
    Detection principle: Heat - Classes A1I/A2I & BI
    Alarm temperature: (maximum) +100°C Alarm temperature (minimum) +54°C
  • Input: Input quantity 1 for remote reset Input type and rating 5-28 VDC (at 2 mA) for a minimum 3 seconds 
  • Output: Output quantity 3 for fault, pre-alarm and alarm Output type and rating Pre-alarm and alarm; relay with NO/NC/C connections (2 A at 30 VDC), Fault : NC opto-islolated phototransistor output 
  • Physical:  
    Physical dimensions Controller: 182 x 180 x 90 mm (7 1/8” x 7 1/8” x 3 1/2”) (W x H x D)
    EOL unit: 100 x 60 x 35 mm (4” x 2 3/8” x 1 3/8”) (W x H x D)
    Net weight Controller: 860 g / EOL unit : 115 g
    Colour: Light grey
    Mounting type: Surface mount, Wall mount Material (body) Polycarbonate
  • Environmental: 
    Operating temperature Controller: -20 to +50°C / EOL unit : -40 to +125°C
    IP rating Controller: IP65 (IK08) / EOL unit : IP65 
  • Standards and regulation: Certification CE, EN54-22, VdS
EN 54-22 Control Unit datasheet
  • VdS EN54-22:2015/prA1:2007. EN54-22 is a referenced standard in AS 1670.1 
  • Up to 500m of sensor cable per zone
  • Separate pre-alarm and alarm signals
  • Easy programmable interface 
  • Enclosure temperature alarm 
  • IP65 rated enclosure
  • General:  
    Status indication: 4 x LED’s (power, fault, pre-alarm & alarm)
    User interface: LCD display with internal configuration buttons
    Reset voltage: 5-28 VDC for minimum
    Connectivity: 2-wire RS-485
    Modbus: RTU or ASCII 
  • Electrical: 
    External Power consumption: 2 W maximum
    Operating voltage: 20 to 30 VDC
    Current consumption: 39 mA at 30 VDC 
  • Detection:  
    Detection principle: Heat - Classes A1I/A2I & BI
    Alarm temperature: (maximum) +100°C Alarm temperature (minimum) +54°C
  • Input: Input quantity 1 for remote reset Input type and rating 5-28 VDC (at 2 mA) for a minimum 3 seconds 
  • Output: Output quantity 3 for fault, pre-alarm and alarm Output type and rating Pre-alarm and alarm; relay with NO/NC/C connections (2 A at 30 VDC), Fault : NC opto-islolated phototransistor output 
  • Physical:  
    Physical dimensions Controller: 182 x 180 x 90 mm (7 1/8” x 7 1/8” x 3 1/2”) (W x H x D)
    EOL unit: 100 x 60 x 35 mm (4” x 2 3/8” x 1 3/8”) (W x H x D)
    Net weight Controller: 860 g / EOL unit : 115 g
    Colour: Light grey
    Mounting type: Surface mount, Wall mount Material (body) Polycarbonate
  • Environmental: 
    Operating temperature Controller: -20 to +50°C / EOL unit : -40 to +125°C
    IP rating Controller: IP65 (IK08) / EOL unit : IP65 
  • Standards and regulation: Certification CE, EN54-22, VdS