Dual AC Controlle

Microcontrollers with their inherent advantages are being increasingly used in industry. With growing shortage and escalating cost of Electrical Energy, accurate monitoring of Air Conditioner’s parameters has become necessary. 3 Phase DUAL AC CONTROLLER is most useful for controlling A/Cs. This instrument is able to maintain Room Temperature with an accuracy of 0.1ºC 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 load/under load etc.

SALIENT FEATURES

Controls Two Air Conditioners.
Separate Phase Supply for each AC.
Bright RED 4 digit LED Display.
Accurate Temperature sensing by precise temperature sensor.
Time sharing for Compressors to share load equally.
Voltage & Current Protections for each compressor.
Separate alarm relay contacts for AC Fail.
Separate alarm relay contacts for Room High.
Hour counters for Compressor ON period to check its reliability.
Display of all the A/C Parameters & fault messages (if any fault present) in a scrolling on display.
Display Hold feature by using ENTER Key. Press it again to release the hold.
DVarious set points are settable through the following menus : a) SET b) DLAY c) OFST d) RSET
Password Protection for all the settings.
Cyclic ON & Operations of both ACs on Sensor Fail Mode.
Auto (with all protections)/manual (without protection) Modes.
Controller Bypass features by provision of switch on front panel.
LED Indications to observe the status.

Technical Specifications :

Supply Voltage: 230 V AC, 50 Hz +/- 15% separate for each A/C.
Contact rating: 30 A at 230 V AC for compressor Live Outputs & 5 A at 250 V AC Alarm Potential free outputs (C, N/O)
Temperature Sensor: Thermistor sensor NTC 10K @ 25 °C metal body with clamp. Sensor cable length 2.75 meters.
Temperature sensing range: 0.0 to 55.0 degree C.
Resolutions: 1 V for voltage, 0.1 A for Current & 0.1degree C for Temperature.
Auto/Controller Bypass Switch is used to bypass the controller i.e. A/C 1 & A/C 2 will remains ON ( irrespective of temperature demands ) if both switches are in ON condition.
Indications :
- Supply ON for A/C 1 & A/C 2: Colour: Yellow
- Auto Mode for A/C 1 & A/C 2: Colour: Green
- Manual Mode for A/C 1 & A/C 2: Colour: Red
- A/C 1 & A/C 2 ON: Colour: Green
- A/C 1 & A/C 2 Fault: Colour: Red
- Room High: Colour: Red
- Healthy: Colour: Green
Keys: four keys for parameter settings.
- SET Key: To enter into SET Mode/To View next set point.
- UP Arrow Key: To increment the set point/To view next menu/To view next set point in the menu.
- Down Arrow Key: To decrement the set point/To view previous menu/To view previous set point in the menu.
- Enter Key: To come out of SE mode/To enter into menu/ To accept the password.
Mounting: Wall mounting Size: 230 mm (H) X 225 mm (W) X 100 mm (D).