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Optical Sensors - Photointerrupters - Slot Type - Transistor Output

The WF2-40B416 is a type of photointerrupter device that can be used for a variety of applications. Utilizing a design with an LED light emitter and a separate light receiver, it functions by detecting an interruption of the beam of light as an object passes between the two components. Typically, the light is transmitted between the two in the form of an infrared beam. Once the beam is disrupted, an electrical signal is generated within the device, which can be used to trigger a specific action such as switching a circuit.

Application Field

These sensors have a vast range of possible application due to their small size and heavy duty construction. The particular WF2-40B416 model is intended typically for use in industrial applications. This is due to the high switching current, which ranges from 400mA to 1A. This makes it suitable for larger items and movement with more speed. Additionally, the number of operating cycles is able to exceed 100 million at low levels of power consumption. The device is also IP67 rated, meaning it can be reliably used in harsh, dusty, and hostile environments.

Working Principle

The WF2-40B416 is designed to function via a transistor output signal. This means that when the device\'s internal beam of light is interrupted, it will create an electrical pulse. This pulse is sent out via the device\'s output, and can be interpreted by another device or circuit.

The WF2-40B416 must be supplied with a separate power source in order to function correctly. This is typically provided in the form of a current that is at least 4mA. This current must also be greater than the total load in order to ensure that the output is sufficient. When active, the internal LED will light up, illuminating a thin strip in between the emitter and receiver modules. As an object passes through the strip, the light will be disrupted, triggering the output signal.

Conclusion

The WF2-40B416 is an excellent and reliable option for applications requiring a robust photointerrupter, such as those requiring a high switching current and the capability of operating in a hostile environment. Utilizing a transistor output sending a response when the beam of light it is emitting is disrupted, this model is ideal in a variety of industrial operations.

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