Datasheet

Photomicrosensors
27
General Precautions ∗Refer to Precautions section for individual models for specific precautions for each model.
These products cannot be used in safety
devices for presses or other safety devices
used to protect human life.
This product is designed for use in
applications for sensing workpieces and
workers that will not affect levels of safety.
Be sure to use the product safely according to the
following precautions.
● Wiring
Warning
Precautions for Safe Use
Item Examples
Power Supply
Do not apply any voltage exceed-
ing the rated voltage range. Apply-
ing any excessive voltage or
supplying AC power (100 VAC or
higher) to a DC-type sensor may
cause the Sensor to explode or
burn.
Load Short-circuit
Do not short-circuit the load.
Doing so may cause the Sensor to
explode or burn.
Wiring
Be sure to wire the Sensor correct-
ly and be careful not to connect the
polarities incorrectly, otherwise the
Sensor may explode or burn.
Connection with No Load
If connected to the power supply
without any load, internal elements
may explode or burn. Make sure
that a proper load is connected to
the Sensor.
AND Connections
Do not use AND connections such
as in the example shown in the
diagram here. Voltage will be
applied to the Vcc terminal without
the GND terminal of Sensor 2
being securely grounded, and may
cause the Sensor to malfunction.
Depending on the model used,
inrush current to Sensor 2 when
Sensor 1 is turned ON may result
in malfunction.
· DC 3-wire NPN output sensor
Load
Sensor
Brown
Blue
Black
· DC 3-wire NPN output sensor
Sensor
Brown
Blue
Black
Load
(Load short-circuit)
Load
Sensor
Brown
Blue
Black
· DC 3-wire NPN output sensor
(Example) Wrong polarity
· DC 3-wire NPN output sensor
(Example) Wrong polarity or wrong wiring
Load
Sensor
Brown
Blue
Black
Sensor
Load
Brown
Black
Blue
Sensor
Brown
Blue
Black
· DC 3-wire NPN output sensor
12 to
24 VDC
0 V
Sensor
Brown
(Vcc)
Blue (GND)
Black (OUT)
Black
(OUT)
5 to
24 VDC
0 V
Load
Sensor
Brown
(Vcc)
Blue
(GND)
Sensor 1 Sensor 2