Product Details Portlet

B5W-DB Diffuse Reflective Sensor

  • Super miniature long-distance diffuse reflective sensor that can be installed anywhere
  • Designed to be immune to ambient light
  • Screws can be mounted from 4 directions
RoHS Compliant
Note: This web page provides an excerpt from a datasheet. Refer to Product Datasheet and other applicable documents for more information.

Ordering Information

Device
scroll
Sensing
method
Appearance Size Connecting
method
Output type Sensing
distance
Operation
mode
Model Minimum
number of
deliverable units
(Unit: piece)
Diffuse reflective B5W-DB Super miniature Connector NPN open
collector
550 mm Light-ON∗1 B5W-DB1452-1 1
B5W-DB1452-2 1500
Connector with cable As it is not supplied with the sensor, order as needed.
Appearance Cord length Model Applicable model
Connector with cable 1 m EE-5002 1M B5W-DB1452-1
B5W-DB1452-2

Ratings/Characteristics

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Item Sensing method Diffuse reflective
Model B5W-DB1452-1, B5W-DB1452-2
Sensing distance (white paper) 550 mm
Hysteresis 30% max.
Light source
(wavelength)
Infrared LED (850 nm)
Power supply voltage 12 VDC±10% including 10% ripple (p-p)
Current consumption 20 mA max. (at 13.2 VDC)
Operating mode Light-ON∗1
Control output Load power supply voltage: 13.2 VDC, Load current: 50 mA max., Residual voltage: 0.8 V max. at 50 mA load current and
0.32 V max. at 10 mA load current, Open collector output (NPN)
Response time Operate/reset: 1 ms max.
Ambient illumination Illumination on the surface of the receiver Incandescent lamp: 3,000 lx max., Sunlight: 10,000 lx max.
Ambient temperature range Operating: -10 to +60°C, Storage: -25 to +80°C (with no icing or condensation)
Vibration resistance 10 to 55 Hz, 1.5-mm double amplitude for 2 h each in X, Y, and Z directions
Shock resistance 500 m/s2 3 times each in X, Y and Z directions
Degree of protection IEC IP50 (not including terminals)
Connecting method Connector models
Weight (unit only) Approx. 1.6 g
Materials Case Polycarbonate (PC)
Lens Acrylic (PMMA)
Cover Polycarbonate (PC)

Dimensions

(Unit: mm)

  • B5W-DB1452-1
    B5W-DB1452-2
    Dimensions
Terminal No. Name
(1) GND
(2) Vout
(3) Vcc
  • Connector with cable (order separately)
    EE-5002 1M
    Connector with cable (order separately) EE-5002 1M
No. Product Name Model/
specifications
Quantity Manufacturer
(1) Connector,
HS for 101-150 harness
GHR-03V-S 1 JST
(2) Connector,
CT for 101-150 harness
SSHL-002TP0.2 3 JST
(3) Lead wire UL1061
AWG26
3
Wiring Table
Connector circuit number Lead wire color
1 Blue
2 Black
3 Brown

Precautions

Precautions for Correct Use

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 is 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.
Wiring
Surge Prevention
  1. If there is a surge in the power supply line, try connecting a Zener diode or a capacitor (with a capacitance of 0.1 to 1 μF), depending on the operating environment. Use the sensor only after confirming that the surge has been removed.
    We recommended use of 20 to 25 V Zener diodes for a 12 VDC power supply.
    Surge Prevention1
  2. Do not use a small inductive load, such as a relay.
    Surge Prevention2
  3. Separate the wiring for the sensor from high-voltage lines or power lines. If the wiring is routed in the same conduit or duct as such lines, the sensor may malfunction or may be damaged by inductive interference.
  4. Make sure that the connectors are securely locked.
Handling During Wiring
  1. If a force is applied to the connection area between the terminal and connector by bending or pulling the cable after the wiring is completed, the connector contact part or connection area with the cable may be damaged, resulting in contact failure. Make sure that a stress (external force) as shown in the figure below is not applied to the connection area between the terminal and connector when routing and connecting cables or harnesses.
  2. Do not perform cord wiring when power supply voltage is applied. Doing so may result in breakage.
    Handling During Wiring
Design
Precautions about this sensor

A modulated-light type of the sensors is used. When designing, give proper consideration to the power supply and cable lengths used.
The sensors are more easily affected than the sensors with Nonmodulated Light.

Reasons for Interference from Power and Cable Length on the Sensors with Modulated Light

An LED emitter is pulse-lighted to produce modulated light. A large current momentarily flows to the sensors in sync with this pulse timing. This causes a pulsating consumption current. A photoelectric sensor incorporates a capacitor with sufficient capacity, and is virtually unaffected by the pulse of the consumption current. With this sensor, however, it is difficult to have a capacitor with a sufficient capacity. Accordingly, when the cable length is long or depending on the type of power source, it may become impossible to keep up with the pulse of the consumption current and operation may become unstable.

Countermeasures
< Adding a Capacitor >
  • Attach a capacitor of 10 μF min. to the wires as close as possible to the sensor. (Use a capacitor with a dielectric strength that is at least twice the sensor's power supply voltage. Do not use tantalum capacitors. A short-circuit may cause the capacitor to ignite due to the large current flow.)
    Adding a Capacitor
< Extending Cable Length >
  • Design the configuration so that the maximum cable length for the sensor is 2 m.
  • When using a cable longer than 2 m, attach a capacitor (e.g.,an aluminum electrolytic capacitor) with a capacity of 10 μF min. to the wires. The distance between the sensor and the capacitor must be within 2 m.
    Make sure that the total cable length is no longer than 5 m. To use a cable length longer than 5 m, use a PLC or other means to read the sensor output and then transmit the signals using a PLC's communications.
  • Although cables are capable of being extended longer than 5 m, performance is likely to be affected by cable specifications and noise interference from adjacent cables and other devices.
    Voltage drops due to the resistance of the cable material itself will also influence performance. Therefore, factors such as the difference in voltage between the end of the cable and the sensor and noise levels, must be given full consideration.
    Extending Cable Length
< Countermeasures for Switching Power Supplies >
  • Take either of the following countermeasures as required if connecting a sensor to a switching power supply.
    • (1) Attach a capacitor of 10 μF min. to the wires as close as possible to the sensor. (Use a capacitor with a dielectric strength that is at least twice the sensor's power supply voltage. Do not use tantalum capacitors. A short-circuit may cause the capacitor to ignite due to the large current flow.)
      Countermeasures for Switching Power Supplies1
    • (2) Connect to the 0-V line of the power source or connect to the power source via a capacitor of approximately 0.47 μF to reduce the impedance of the mounting base to prevent inductive noise from entering the mounting base.
      Countermeasures for Switching Power Supplies2
    • (3) Connect the noise filter terminal (neutral terminal to ACG) of the switching power supply to the case (FG) and 0-V terminal of the power supply.
< Countermeasures to Handle Inductive Noise >
    • Countermeasures to Handle Inductive Noise
      (4) Insert a plastic insulator of approximately 10 mm between the sensor and the mounting base.
< Effects of Inductive Noise >
  • When there is inductive noise in the sensor mounting base (metal), the sensor may enter the same state as light receiving. In this case, ensure that there is no electrical potential difference between the sensor 0 V terminal and the sensor mounting base (metal), or put a 0.47 μF capacitor between the 0 V terminal and the base (metal).
    Effects of Inductive Noise
< Effects When the Power Supply is Turned On >
  • An output pulse may occur when the power supply is turned ON depending on the power supply and other conditions. Use the sensor in the stable ready-for-detection state reached in 100 ms after turning on the power supply.