Datasheet
PIR Motion Sensor (EKMB, EKMC, AMN2, 3)
8
ds_61802_en_pir_motion_sensor: 190813D
MOUNTING DIRECTION
NOTES
For more information, see Notes for Using Motion Sensors.
Y direction
X direction
Z direction
Y
X
Z
1) Detection area
As shown on the diagram, the
detection zone is polarized.
If a target enters the
detection zones and at
the same time, the signals
are respectively cancelled
and detection could become
impossible at maximum
detection range.
Detection
zone
Target
2) Direction
As detailed on the
diagram, please install
the sensor so that the
expected trespassing
direction corresponds to the
axis X or axis Y.
In some cases, going back and
forth towards the sensor (parallel
movement to the axis Z), may not be detected.
1. Checkpoints relating to principal of
operation
PaPIRs is a pyroelectric infrared sensor
that detect variations in infrared rays.
However, it may not detect in the
following case: lack of movement, No
temperature change in the heat
source. Beside, it could also detect the
presence of heat sources other than a
human body.
Efficiency and reliability of the system
may vary depending actual operating
conditions:
1) Detecting heat sources other than the
human body, such as
(1) Small animals entering the detection
area.
(2) When a heat source for example
sunlight, incandescent light, car
headlights etc, or strong light beam hit
the sensor regardless inside or outside
the detection area.
(3) Sudden temperature change inside
or around the detection area caused
by hot or cold wind from HVAC, or
vapor from the humidifier, etc.
2) Difficulty in sensing the heat source
(1) Glass, acrylic or similar materials
standing between the target and the
sensor may not allow a correct
transmission of infrared rays.
(2) Non-movement or quick movements
of the heat source inside the detection
area. (Please refer to the section on
the detection performance ratings for
details about movement speed.)
3) Expansion of the detection area
In case of considerable difference in
the ambient temperature and the
human body temperature, detection
area may be wider apart from the
configured detection area.
4) Malfunction/Detection error
Unnecessary detection signal might be
outputted, on rare occasions, come
from sudden outbreak output due to
the nature of pyroelectric element.
When the application does not accept
such conditions strictly, please
implement the countermeasure by
introducing pulse count circuit etc.
2. Optimal operating environment
conditions
1) Temperature: Refer to the absolute
maximum rating.
2) Humidity degree: 15 to 85%Rh (Avoid
condensation or freezing of this
product)
3) Pressure: 86 to 106KPa
4) Overheating, oscillations, shocks can
cause the sensor to malfunction.
5) This sensor is not waterproof or
dustproof. Avoid use in environments
subject to excessive moisture,
condensation, frost, containing salt air
or dust.
6) Avoid use in environments with
corrosive gases.
3. Handling cautions
1) Do not solder with a soldering iron
above 350C 662F and not for more
than 3 seconds. This sensor should be
hand soldered.
2) To maintain stability of the product,
always mount on a printed circuit
board.
3) Do not use liquids to wash the sensor.
If washing fluid gets through the lens, it
can reduce performance.
4) Do not use a sensor after it fell on the
ground.
5) The sensor may be damaged by 200
volts of static electricity. Avoid direct
hand contact with the pins and be very
careful when operating the product.
6) When wiring the product, always use
shielded cables and minimize the
wiring length to prevent noise
disturbances.
7) The inner circuit board could be
destroyed by a voltage surge.
Use of surge absorption elements is
highly recommended.
Surge resistance: below the power
supply voltage value indicated in the
maximum rated values section.
8) Please use a stabilized power supply.
Power supply noise can cause
operating errors.
Noise resistance: 20V or less (Square
waves with a width of 50ns or 1s)
To reduce the effect of power supply
noise, install a capacitor on the
sensor’s power supply pin.
9) Operating errors can be caused by
noise from static electricity, lightning,
cell phone, amateur radio,
broadcasting offices etc...
10) Detection performance can be
reduced by dirt on the lens.
11) The lens is made of soft materials
(Polyethylene). Please avoid adding
weight or impacts that might change its
shape, causing operating errors or
reduce performance.
12) Operating “temperatures” and
“humidity level” are suggested to
prolong usage. However, they do not
guarantee durability or environmental
resistance.
Generally, high temperatures or high
humidity levels will accelerate the
deterioration of electrical components.
Please consider both the planned
usage and environment to determine
the expected reliability and length of
life of the product.
13) Do not attempt to clean this product
with any detergent or solvent, such as
benzene or alcohol, as these can
cause shape or color alterations.
14) Avoid storage in high, low
temperature or liquid environments.
As well, avoid storage in environments
containing corrosive gas, dust, salty air
etc. It could cause performance
deterioration and the sensor’s main
part or the metallic connectors could
be damaged.