Motion sensors
MP Motion Sensor (AMN2, 3, 4)
NOTES
For Cautions for Use.
1. Checkpoints relating to principle of
operation
MP motion sensors are passive infrared
sensors which detect changes in the
infrared rays. They may fail to detect
successfully if a heat source other than a
human being is detected or if there are
no temperature changes in or movement
of a heat source. Care must generally be
taken in the following cases. The
perf ormance and reliability of the sensors
must be checked out under conditions of
actual use.
1) Cases where a heat source other
than a human being is detected.
(1) When a small animal enters the
detection range.
(2) When the sensor is directly exposed
to sunlight, a vehicle’s headlights, an
incandescent light or some other source
of far infrared rays.
(3) When the temperature inside the
detection range has changed suddenly
due to the entry of cold or warm air from
an air-conditioning or heating unit, water
vapor from a humidifier, etc.
2) Cases where it is difficult to detect
the heat source
(1) When an object made of glass, acrylic
or other subject which far infrared rays
have difficulty passing through is located
between the sensor and what is to be
detected.
(2) When the heat source inside the
detection range hardly moves or when it
moves at high speed; for details on the
movement speed, refer to the section on
the performance ratings.
2. When the detection area becomes
larger
When the difference between the
ambient temperature and body
temperature is large (more than 20°C
68°F), detection may occur in isolated
areas outside the specified detection
range.
3. Other handling cautions
1) Be careful not to allow dust or dirt to
accumulate on the lens as this will
adversely affect the detection sensitivity.
2) The lens is made of a soft material
(polyethylene).
Avoid applying a load or impact since this
will deform or scratch the lens, making
proper operation impossible and causing
a deterioration in its performance.
3) The sensor may be damaged if it is
exposed to static with a voltage
exceeding ±200V. Therefore, do not
touch its terminals directly, and exercise
adequate care in the handling of the
sensor.
4) When the leads are to be soldered,
solder them by hand for less than 3
seconds at a temperature of less than
350°C 662°F at the tip of the soldering
iron. Avoid using a solder bath since this
will causing a deterioration in the
sensor’s performance.
5) Do not attempt to clean the sensor.
Cleaning fluid may enter inside the lens
area causing a deterioration in
performance.
6) When using the sensors with cables, it
is recommended that cables which are
shielded and as short as possible be
used in order to safeguard against the
effects of noise.
ASCTB240E 201201-T
Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e