Datasheet

8
B5W-LB series Light Convergent Reflective Sensor
B
5
W
-
L
B
Connection without Load (Digital only)
Do not connect the power supply to the Sensor with no load con-
nected, otherwise the internal elements may explode or burn.
Always connect a load when wiring.
AND connection
With an AND connection as shown in the figure below, a voltage
is applied to Vcc while GND of sensor 2 is not securely
grounded. A failure may occur. Do not make this kind of connec-
tion. Also an inrush current may occur in sensor 2 when sensor 1
is turned on, causing failure or malfunction.
Storage and Operating Environment
(1) Places where the product is not exposed to corrosive gases,
such as hydrogen sulfide gas, or salty wind.
(2) Places where it is not exposed to direct sunlight.
(3) Make sure that flux, oil, or other chemicals do not adhere to
the surface of the emitter and receiver.
(4) Do not apply a load that may deform or deteriorate the prod-
uct in any circumstances.
(5) Store the product in a normal temperature, humidity, and
pressure environment.
(6) The product should be used without freezing or condensa-
tion.
(7) Do not use the product in atmospheres or environments that
exceed product ratings.
(8) This product does not have a water-proof structure. There-
fore, do not use it in an application or environment where it
will be subjected to plashes from water, oil, or any other liq-
uid.
● Mounting
(1) Ambient light may cause the sensor to malfunction.
In such case, mount the sensor at an angle that ambient
light does not enter the receiver lens.
Make sure that the sensor does not affected by ambient
light.
(2) Mount the sensor securely on a flat surface.
(3) Use M3 screws to secure the sensor (use together with
spring washers and 6-mm-diameter flat washers to prevent
screws from loosening). Use a tightening torque of 0.54 N·m
max.
(4) Take care that nothing comes into contact with the detected
part of the sensor. Damage to the sensing element will
result in poor performance.
(5) Before using the sensor, check to make sure that it has not
become loose due to vibration or shock.
(6) Analog output models have a potentiometer mounted on the
PCB. This potentiometer is used for in-house processes by
OMRON and should not be touched.
● Wiring
Surge Prevention
(1) If there is a surge in the power supply, try connecting a Zener
diode or a capacitor (with a capacitance of 0.1 to 1
μ F),
depending on the operating environment. Use the sensor
only after confirming that the surge has been removed.
We recommend use of 30 to 35 V Zener diodes for a 24 VDC
power supply and 10 to 15 V Zener diodes for a 5 VDC power
supply.
(2) Do not use a small inductive load, such as a relay.
(3) Separate the wiring for Light convergent reflective sensors
from high-voltage lines or power lines. If the wiring is routed
in the same conduit or duct as such lines, the Light conver-
gent reflective sensors may malfunction or may be damaged
by inductive interference.
(4) For the digital type, make sure that the connectors are
securely locked.
Vcc
OUT
GND
Sensor
Vcc
OUT
GND
Vcc
OUT
GND
Load
Sensor 1 Sensor 2
Precautions for Correct Use
Vcc
Z
D
Z D : Zener diode
0.1 to 1µF
OUT
GND
Sensor
Vcc
D
Relay
OUT
GND
Sensor