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.6A/C CONTROLLER is most useful for controlling A/Cs. This instrument is able to maintain Room Temperature with an accuracy of 0.1° C 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. by automatically cutting off the supply.
- Input Voltage : 3 Phase 415 V, 50Hz (R, Y, B, N) to MCB.
- Supply Voltage : 230 V AC, 50 Hz ± 15% separate for each A/C.
- Contact Rating : 7A at 230 V AC for Compressor Live Outputs to Contactor coil & 10 A at 250 V AC for Alarm Potential Free Outputs(C, N/O).
- Temperature Sensor : 40Amp single pole contactor for each A/C (230VAC) for ALARM contact.
- Temperature Sensing Range : 0.0°C to 55.0 °C
- Resolution: 1V for Voltage, 0.1 A for Current & 0.1°C for temperature.
- Indications :
1] Supply ON for A/C1 & A/C2, A/C3, A/C4, A/C5, A/C6. Colour: Green
2] Underload / Overload Fault: Colour: Red
3] Sensor Fail fault Colour: Red
4] Room High fault Colour: Red
5] Fire alarm Colour: Red
6] Healthy Colour: Green
7] Keys: 4 key keypad for settings.
1] SET Key: To enter into FUNCTION SET Mode/To view the next set pt.
2] Up Arrow Key: To increment the set point
3] Down Arrow Key: To decrement the set point.
4] ENTER Key: To come out of FUNCTION SET mode/To enter into menu/To accept the password
- Mounting: Wall mounting
- Sensing :
1. Inbuilt current sensing for compressor.
2. Temperature Sensing by precise Temp. Sensor.
3. Fire Alarm sensing.
- Terminals:
1. Separate O/P s for each Compressor.
2. Temperature sensor.
3. Alarm 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.
- RUN MODE PARAMETERS :
1. Room Temperature
2. CP1, CP2 CP3 CP4 CP5 CP6 Amp.
3. Fault message if any
- FAULTS/PROTECTION :
1. Primary Fault related to protections of, A/C1, A/C2, A/C3, A/C4, A/C5, A/C6 Under load (UL) & Room Low.
2. Secondary Fault related to protections of, A/C1, A/C2, A/C3, A/C4, A/C5, A/C6:- Overload (OL).
3. Room Temperature High
4. Room sensor fail / Room High protection.
5. Fire Alarm Protection.
6. MCB is used for Short circuit protection.
- Fully programmable.
- Complete protection for A/C from unhealthy condition.
- All set points programmable from keypad.
- Password protection for controller.
- Four key interface for on site programming.
- Separate alarm contacts for A/C fail alarm.
- Automatic display of A/C parameters one by one in Run Mode.
- Status, Healthy & Alarm indication by LED on front panel.
- Room temperature sensing by precise sensor.
- Direct display of actual current drawn by each compressor.
- Direct display of actual room temperature.
- Sequencing of comp. for equal run hours, site selectable.
- Automatic Timer mode operation if Room sensor fails.
- All Faults are Auto resettable.
