AC Controllers For MTNL Two, Air Conditioner Controllers, Manufacturer, Supplier, Exporter, Proton Power Control, Pune, Maharashtra, India

AC Controller LCD

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 Conditioning parameters has become necessary.2 A/C CONTROLLER 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 A/C ON/OFF. It also protects Costly Air conditioner from ‘Unhealthy conditions’ such as over voltage/under voltage, Over Load/ under Load etc. by automatically cutting off the supply.

  • Supply:3 Phase 4 wire 415 VAC, 50 Hz.
  • Display: 16*2 LCD Display for status & Faults.
  • Input: MCB TPN 32 Amp, 10 KA capacity.
  • Output: 40Amp single pole contactor for each A/C (230VAC) for ALARM contact.
  • Alarm O/P: 2 Nos. Alarm contacts @ 7Amp A/C.(250VAC)
  • Sensor:NTC Temp sensor for room Temp. (Range 0 - 55°C)
  • Fire input:Fire alarm input from fire panel.
  • Indications:
    1. Healthy indication for controller.
    2. A/C ON indication for each A/C.
    3.Alarm indication 2 no’s: AC Alarm, Fire Alarm.
  • Front Panel:
    1] 16 char. 2 lines LCD display with backlight.
    2] 4 Key keypad for programming.
    3] A/C1 ON indication.
    4] A/C2 ON indication.
    5] Healthy Indication by blinking Green LED.
    6] ALARM indication by Red LED.
  • Terminals :
    1] Separate O/Ps for each Relay.
    2] Temperature sensor.
    3] Fire Sensor.
    4] Alarms relay o/p.
  • Alarms/ Protections:
    1] Over Load protection set point user settable.
    2] Under Load protection set point user settable.
    3] High/low temperature alarm set point user settable.


  • Fully programmable..
  • Complete protection for A/C from unhealthy condition.
  • All set points programmable from keypad.
  • Password protection for controller..
  • Four key interface for onsite programming.
  • Separate alarm contacts for A/C fail alarm.
  • Automatic display of A/C parameters one by one in Run Mode.
  • Status & Healthy indication by LED on front panel.
  • Alarm indication by LED on front panel.
  • Room temperature sensing by precise sensor.
  • Direct display of actual voltage.
  • Direct display of actual room temperature. Sequencing of comp. for equal run hours, site selectable. selectable
  • Automatic Timer mode operation if Room sensor fails.
  • All Faults are Auto resettable.

  • NA

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