Intelligent Eye (J Type) - Daikin FTK25JV1NB Manual

Si-86.book Page 23 Friday, June 23, 2000 10:26 AM
SIE-86

1.10 Intelligent Eye (J type)

Outline The function that detects existence of humans in the air-conditioned room and reduces the capacity when
no humans are available in the room in order to save electricity by means of a human motion sensor.
Processing 1. Detection method by human motion sensor
Sensor output
(Human motion)
Human detection
signal
2. The motions (for example: in cooling)
Human detection
signal
Compressor
speed
Human motion
detection LED
Remote controller
human motion
detection signal
Sensor button
1 In case of Fan mode, the fan speed reduces by 50 rpm.
Main Function
sampling (20msec)
High
Low
ON
OFF
This sensor detects human motion by receiving infrared rays and displays the pulse wave output.
A micro computer 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. 20 min.
ON
OFF
RESET.
C/O Set temp. + 2˚C
H/P Set temp. - 2˚C
Set temp.
MaxHz
Mi nHz
0Hz
ON
OFF
ON
OFF
ON
Operation
OFF
Set speed
Fan speed ( 1)
OFF
When a micro computer doesn't have a signal from the sensor in 20 minutes, it judges that no body is in
the room and turns off the human detection LED, operating the unit in temperature sifted 2˚C from the
set temperature. (Cooling : 2˚C higher, Dry: 1˚C higher and Auto : according to the operation mode at
that time.)
Since the set temperature is shifted by 2˚C higher for 40 minutes, compressor speed becomes low and
can realize energy saving operation. But as thermostat is prone to be off by the fact that the set
temperature has been shifted, the thermostat-off action is prohibited in 40 minutes so as to prevent this
phenomena.
After this 40 minutes, the prohibition of the thermostat-off is cancelled and it can realize the conditions
to conduct thermostat-off depending on the room temperature. In or after this forty minutes, if the
sensor detects human motion detection signal, it turns on "Human detection LED" and let the set
temperature and the fan speed return to the original set point, keeping a normal operation.
If the sensor detects the outputs 10 times/sec.
or more, it judges humans are available.
1sec
40 min.
Frequency at set temp. + 2˚C
34Hz
The lower limit by detecting
in case of
human.
thermostat-off
(Prohibition of thermostat-off)
Set speed - 50 rpm
General Functionality
(RL019)
20 min.
Set speed
(RL020)
23