New controller for HE-230 electric heater now available, power supply 230V AC.

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Sterownik ACU
Sterownik ACU - Image 2

ACU controller

760.00zł net

The ACU controller is a fully functional controller designed for automation systems controlling the operation of supply and exhaust air handling units. It comes in the form of an unencased printed circuit board, which serves as a central unit and a connection strip for peripheral elements. In a clear way, each connector is described with a number, letter and graphic symbol of the element connected to the given terminal. The user thanks to such a solution saves space and time of assembly of the whole control unit, which directly translates into cost reduction.

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Features:

  •  room temperature control
  •  cascade temperature control
  •  supply temperature limitation
  •  taking the outside temperature into account in the control
  •  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 clock
    • three 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
  •  service functions
  •  function of returning to factory values
  •  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 headquarters
1 input
remote control
1 input
Universal inputs:
  • for 0-10V signal from the temperature transmitter
  • 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
1 input
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
2 outputs
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 MODBUS protocol

*The ACU controller can be connected to 5 devices controlled by an analog signal. 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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