SICK WL34

Questions and Answers:

V
Victoria CraigJul 29, 2025
What to do if the yellow LED flashes on my SICK WL34?
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  Jonathan MartinJul 29, 2025
  If the yellow LED on your SICK Accessories is flashing, and you're seeing an alarm signal, it means the sensor is operational but not under ideal conditions. Try these steps: * Ensure the light beam is fully aligned with the reflector. * Clean the optical surfaces of both the sensor and reflector. * If the potentiometer is at maximum sensitivity, reduce the distance between the sensor and reflector and verify the reflector type. * Check if the reflector is appropriate for the application.
J
Jason JacksonAug 4, 2025
Why is the yellow LED not lighting up on my SICK Accessories?
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  djohnsonAug 5, 2025
  If the yellow LED on your SICK Accessories doesn't light up, even when the light beam is aligned and there's nothing blocking it, there could be a few reasons: 1. **Voltage Issues:** Check the power supply and all electrical connections (cables and plugs) to ensure they are properly connected and providing the correct voltage. 2. **Voltage Interruptions:** Make sure the power supply is stable and free from interruptions. 3. **Faulty Sensor:** If the power supply is working correctly, the sensor itself might be defective and needs replacement.
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nicole25Aug 10, 2025
Why is the yellow LED flashing on my SICK WL34?
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  James MataAug 10, 2025
  The yellow LED flashing on your SICK Accessories indicates that the sensor is ready for operation, but the operating conditions are not ideal. You should check the following: * Align the light beam completely on the reflector. * Clean the optical surfaces of the sensor and reflector. * If the potentiometer is set to maximum sensitivity, reduce the distance between the sensor and reflector and check the reflector type. * Ensure the reflector is suitable for the application (using only SICK reflectors is recommended). * Check and adjust the sensing range if necessary. * Verify that the distance between the sensor and reflector is not too large.
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Michael ReynoldsAug 16, 2025
What to do if the yellow LED doesn't light up on my SICK WL34 Accessories?
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  christinalunaAug 16, 2025
  If the yellow LED on your SICK Accessories doesn't light up even when the light beam is aligned and there's no obstruction, it could be due to several reasons: * **No voltage or voltage below the limit values:** Check the power supply and all electrical connections (cables and plug connections). * **Voltage interruptions:** Ensure a stable power supply without interruptions. * **Faulty sensor:** If the power supply is verified as OK, consider replacing the sensor.
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Tammy BerryAug 22, 2025
What to do if SICK WL34 has signal interruptions when object is detected?
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  Sean BaxterAug 22, 2025
  If your SICK Accessories experiences signal interruptions when an object is detected, it might be due to the depolarizing property of the object's surface (e.g., tape) or reflection. Try reducing the sensitivity or changing the position of the sensor.

SICK WL34 Specifications

General

Protection Class	IP 67
Type	Photoelectric Sensor
Output Type	PNP
Supply Voltage	10 V DC ... 30 V DC
Housing Material	Plastic
Connection Type	Connector
Ambient Temperature Range	-25°C to +55°C