Main Functions Si04-402A24 Function and Control1.8 INTELLIGENT EYEThis is the function that detects existence of humans in the room by a human motion sensor(INTELLIGENT EYE) and reduces the capacity when there is no human in the room in order tosave electricity.Processing 1. Detection method by INTELLIGENT EYE This sensor detects human motion by receiving infrared rays and displays the pulse waveoutput. A microcomputer in an indoor unit carries out a sampling every 20 msec. and if it detects 10cycles of the wave in one second in total (corresponding to 20msec.× 10 = 100msec.), itjudges human is in the room as the motion signal is ON.2. The motions (for example: in cooling) When a microcomputer doesn’t have a signal from the sensor in 20 minutes, it judges thatnobody is in the room and operates the unit in temperature sifted 2°C from the settemperature. (COOL· DRY : 2°C higher, HEAT : 2°C lower, AUTO : according to theoperation mode at that time.)+1 In case of FAN mode, the fan speed reduces by 60 rpm.If the sensor detects the outputs 10 times/sec.or more, it judges humans exist.1secsampling (20msec)HighLowONOFFSensor output(Human motion)Human detectionsignal (R2821)ONOFF RESET.Cooling set temp. + 2˚CHeating set temp. - 2˚CHuman detectionsignal20 min. 20 min.within 20minutes.40 min.MaxHzMi nHz0HzCompressorspeed The lower limit by detectinghuman.(Prohibition of thermostat-off)ONOFFONOFFOperationOFFFan speed (H1) Set speed - 60 rpmSet speed Set speedin case ofthermostat-offFrequency at set temp. + 2˚CSet temp.(R3303)Remote controllerIntelligent Eyebutton
