Causes and solutions for unstable output signals of photoelectric sensors – Turck

Create Date: 2024-8-30 12:03:23|Source: TURCK/TURCK

The following conditions may cause the output signal of the photoelectric sensor to detect the object is unstable:

(1) The power supply is abnormal;

(2) The detection frequency is too fast;

(3) the size of the measured object;

(4) The measured object is not in the stable detection area of the sensor;

(5) Electrical interference.

  ​                      Causes and solutions for unstable output signals of photoelectric sensors – Turck

Countermeasure:

(1) To supply a stable voltage to the sensor, the current supplied must be greater than the current consumed by the sensor;

(2) The speed of the measured object must be slower than the response speed of the sensor;

(3) The size of the measured object must be larger than the standard detection object or the small detection object;

(4) It is necessary for the measured object to be detected within the stable detection scale of the sensor;

(5) Corresponding protection measures can be made, such as: making shielding shields around the probe, grounding high-power equipment, etc.

When using photoelectric sensors, it is also necessary to pay attention to avoid places with a lot of dust; Places with a lot of corrosive gases; Places where water, oil, and chemicals may be splashed directly; Places with direct sunlight and no shading methods such as the field or sunlight; Places where the ambient temperature changes beyond the scale of the product regulation; Places where the vibration and impact are large, and the shock absorption method is not adopted. Prevent malfunction of photoelectric sensors.

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