Main Functions SiUS04-924_A
Function and Control 23
1.10 INTELLIGENT EYE Operation
Outline This function detects movement in the room by a human motion sensor (INTELLIGENT EYE),
reducing capacity when the room is empty in order to save electricity.
Detail 1. Detection method by INTELLIGENT EYE
This sensor detects human motion by receiving infrared rays and displays the pulse wave
output.
The microcomputer in the 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 20 msec. × 10 = 200 msec.), it
determines there is movement in the room as the motion signal is ON.
2. The motions (for example: in cooling)
When a microcomputer does not have a signal from the sensor in 20 minutes, it detects no
presence is in the room and operates the unit at a temperature shifted from the target
temperature. (Cooling / Dry: 2°C (3.6°F) higher, Heating: 2°C (3.6°F) lower, Auto: according to
the operation mode at that time.)
In case of FAN mode, the fan speed reduces by 60 rpm.
Others For dry operation, you cannot set the temperature with a remote controller, but internally the
target temperature is shifted by 2°C (3.6°F).
1 sec.
sampling (20 msec.)
High
Low
ON
OFF
Sensor output
(Human motion)
(R2821)
Human detection
signal
If the sensor detects the outputs
10 times/sec. or more, it judges
humans exist.
ON
OFF
RESET.
20 min. 20 min.within 20 min.
ON
OFF
ON
OFF
Operation
OFF
Fan speed ()
Set speed Set speed
Target temperature
(R14583)
Remote controller
INTELLIGENT
EYE button
Human detection
signal