Channel HD humidity and temperature transmitter - new lower price of PLN 273 net.

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ACU L DIN controller

1 250.00zł net

ACU L DIN controller is a fully functional controller designed for automation systems controlling the operation of supply and exhaust air handling units.ACU L DIN controller can be installed in the control cabinet in a simple, intuitive way, as it is compatible with the DIN type mounting rail standard. Peripheral components are connected to the controller, which is a central unit, through detachable terminal strips. The enclosure has clear descriptions consisting of a letter symbol, numbering and a graphic element indicating the nature of the connector. With this solution, the user saves space and time.

With a larger number compared to the ACU STD and ACU DIN of analog inputs and outputs, this model allows you to support applications where, in addition to the temperature control loop, you can additionally activate the regulation of another parameter, such as: humidity, CO2, etc.

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Features:

  •  room temperature control
  •  cascade temperature control
  •  supply temperature limitation
  •  inclusion of external temperature in the control
  •  control of humidity in the room
  •  cascading humidity control
  •  control of the amount of CO2 in the room
  •  control of pressure differences in channels
  •  control of water and/or electric heater
  •  water or direct evaporation cooler control
  •  control of the heat recovery system
  •  mixing chamber control
  •  thermal protection of fan motors
  •  antifreeze protection of the water heater
  •  recovery protection against frostbite
  •  electric heater protection
  •  control of dampers
  •  monitoring the condition of filters
  •  fan compression control
  •  cooperation with external devices
  •  calendar function:
    • weekly and annual clock
    • four time zones in a day
    • blocking of selected functions in a given zone
    • Determination of expenditures for drives with an inverter individually for each zone
    • change of settings for SUMMER / WINTER
  •  service functions
  •  function of returning to factory values
  •  alarm history (last 10)
  •  MODBUS RTU communication protocol - up to two networks
 Digital inputs:
 motor protection
 2 inputs
 differential pressure switches (filters and fans)
 2 inputs
 heater alarm
 1 input
 co-. with fire panel.
 1 input
 remote control
 1 input
 Universal inputs:
  • for 0-10V signal from the temperature transmitter
  • and/or measuring the humidity in the room
  • and/or moisture measurement in the duct
  • and/or external humidity measurement
  • and/or a CO2
  • and/or channel pressure transducer2
  • and/or measuring the return water temperature from the heater
  • and/or measuring the temperature of the water return from the cooler
  • and/or digital input function for ON/OFF
  • and/or AUTO/MANUAL switching
  • and/or radiator alarm
  • and/or exchanger pressure switch
  • and/or filter pressure switch
 2 inputs
 Measurement inputs:
 PT 1000 temperature sensors
 4 inputs
 Digital (relay) outputs:
 fan control
 2 outputs
 control of the heating medium pump
 1 output
 control of throttle actuators
 1 output
 working signal for external systems
 1 output
 alarm signal for external systems 
 1 output
 cooling demand signal
 1 output
 Analog outputs:
 0-10V signal
 4 (5*) outputs
 Communication port:
 RS 485 protocol MODBUS RTU

*To the ACU L controller. DIN 5 devices controlled by analog signal can be connected. This is possible because one of the analog outputs - Y2 - can operate 2 devices (heater and cooler). The required condition is that they are not switched on at the same time. The COOL output is used for this, where Y2 is switched between the two terminals of this output for the heating or cooling sequence, respectively.

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