Intelligent Eye - Daikin SiEN04-306D Service Manual

Main Functions
1.8

INTELLIGENT EYE

This 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 to
save electricity.
Processing 1. Detection method by INTELLIGENT EYE
Sensor output
(Human motion)
Human detection
signal
2. The motions (for example: in cooling)
Human detection
signal
Compressor
speed
Remote control

Intelligent Eye

button
H1 In case of Fan mode, the fan speed reduces by 50 rpm.
50
sampling (20msec)
High
Low
ON
OFF
This sensor detects human motion by receiving infrared rays and displays the pulse wave
output.
A microcomputer in an indoor unit carries out a sampling every 20 msec. and if it detects 10
cycles of the wave in one second in total (corresponding to 20msec.× 10 = 100msec.), it
judges human is in the room as the motion signal is ON.
within 20
minutes.
ON
OFF
RESET.
C/O Set temp. + 2˚C
H/P Set temp. - 2˚C
Set temp.
MaxHz
Mi nHz
0Hz
ON
OFF
ON
Operation
OFF
Set speed
Fan speed ( 1)
OFF
When a microcomputer doesn't have a signal from the sensor in 20 minutes, it judges that
nobody is in the room and operates the unit in temperature shifted 2°C from the set
temperature. (Cooling : 2°C higher, Dry: 1°C higher and Auto : according to the operation
mode at that time.)
1sec
2 0 m i . n
40 min.
Frequency at set temp. + 2˚C
The lower limit by detecting
human.
(Prohibition of thermostat-off)
Set speed - 50 rpm
SiEN04-306D
If the sensor detects the outputs 10 times/sec.
or more, it judges humans exist.
2 0 m i . n
in case of
thermostat-off
Set speed
Function and Control
(R2821)
(R2822)