Mini AC Controllers With Free Cooling For Telecom Shelters, Mini Air Conditioner Controllers, Manufacturer, Supplier, Exporter, Proton Power Control, Pune, Maharashtra, India

AC Controller With Freecooling

MICROCONTROLLERS with their inherent advantages are being increasingly used in the industry. With growing shortage and escalating cost of Electrical Energy, accurate monitoring of Air Conditioner's parameters has become necessary. 'AC Controller with freecooling is most useful for controlling A/Cs. This instrument is able to maintain Room Temperature with an accuracy of 0.1 Degree Celsius by automatic measurement of Room temperature and accordingly controlling AC ON/OFF. It also protects Costly Air conditioner from ‘Unhealthy conditions’ such as over load/under load etc. by automatically cutting off supply to it.

  • Aux. Supply: 48V DC
  • Input Supply Voltage: 230 VAC +/-15%
  • Outputs: Fan : 0-10V DC
    Compressor : 230 VAC ± 15
    Damper : 48V DC
  • Front Panel:
    1) 16 char X 2 lines LCD display with backlit.
    2) 5 Key keypad for programming.
  • Sensing: 1) Inbuilt Voltage & current Sensing in Power
    2) Temperature Sensing by Accurate temp. sensor.
    3) Tacho input from Fan
    4) High Pressure/Low Pressure sensing for compressor
  • Terminals:1) Compressor Output 30 A 230 VAC
    2) Damper Output. 5 A , 48 V
    3) Temperature sensor.
    4) AC alarm relay o/p.
    5) Room High alarm relay o/p.
    6) Fan Supply Output (0-10V DC)
  • Alarms/ Protections:1) OV/UV protection set point user Selectable.
    2) OL/UL protection set point user Selectable.
    3) High/Low temperature alarm set point user selectable.
  • Dimensions:150 mm (H) x 200 mm (W)x 80(D)


  • Fully programmable.
  • Complete protection for AC from unhealthy condition.
  • All set points programmable from keypad.
  • Password protection for controller
  • 16 charx 2 lines LCD display with back lit on controller front panel.
  • Simple 5 Key keypad for onsite programming.
  • Two Alarm contacts i.e. primary and secondary alarms.
  • Automatic display of CP parameters one by one in Run Mode.
  • CP Status & Damper Open/Close Status on LCD Display.
  • Room temperature & Out Door temperature and ambient humidity sensing by precise sensors.
  • Separate outputs For fan, Compressor & Damper.
  • Direct display of Line Voltage & actual Current drawn by compressor.
  • Direct display of actual room temperature, Out Door temperature & Ambient Humidity.
  • Automatic Timer mode operation if Room temperature sensor fails.
  • HP, LP Sensing.
  • HP Fault manual reset & all other Faults Auto reset.
  • Automatic Compressor lock after maximum allowable 3 UL, OL and LP faults
  • Non Volatile Fault log History. (Last 10 faults).
  • Compressor, Free cooling, Emergency cooling and blower hour run 5 digit displays.
  • Offset Feature for onsite calibration.
  • Sensor fail mode On-time & Off-Time.
  • Fan feedback sensing i.e. determines the healthy condition of the fan.

  • N/A

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