SF4-AH28

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Optical Sensors have become an essential tool in the automation of motion control and robotics. The SF4-AH28 Photointerrupter Slot Type Logic Output is one of the leading products in this field, offering a full range of features to ensure reliable, accurate results. Photointerrupters are devices capable of detecting a light beam, such as that of an LED, and converting it into a modulated signal or relapsing state-output. This technology can be used to sense the presence of small objects, regardless of their shape or size, as the photointerrupter utilizes a light-emitting diode (LED) and two photosensitive optoelectronic components. The SF4-AH28 has the ability to detect a beam of light in a wide range of applications, from sensing the presence of small items to detecting the position of machine parts as well.

The SF4-AH28 boasts an extensive list of features, such as a low-level electrical current and an advanced optical sensing range. This allows for a wide variety of applications, as it supports sensing positioning variations in a variety of environments. Its use of a single optical receiver ensures reliable detection of the transmitted light beam, while its integrated shielding prevents cross-talk when measuring multi-position applications. Furthermore, the SF4-AH28 offers integrated logic for controlling the output signals, meaning that different programming methods can be configured to suit individual applications.

More specifically, the SF4-AH28 features a slot type housing design and logic output capabilities, to allow for the detection of two distinct light beams. This feature enables the device to sense the presence of multiple objects in sample paths or assembly lines. Additionally, the SF4-AH28 includes a logic output synchronization capability, allowing the device to output logic-level signals to indicate the start and end of an activity. This can be used in conjunction with the device’s open collector output, allowing it to be used in various electrical interfaces.

The working principle of the device can be divided into two distinct sections. First, the device receives an input light beam from a LED, which is converted to electrical current upon hitting the photosensitive optoelectronic components. The electrical current then passes through an integrated logic circuit, which determines whether the signal is high or low, depending on whether the light beam was interrupted. If the light beam was interrupted, the logic output will switch to a high level to indicate that the object was detected. The second section of the device works similarly, except that the input is now a separate beam, such as that transmitted by a pair of infrared beams, thus allowing the device to detect two separate objects.

Overall, the SF4-AH28 offers a wide range of features to ensure reliable, accurate results, regardless of the environment or application. From sensing small objects to detecting the position of machine parts, the device can be customized to handle a variety of tasks, thanks to its versatile slot type housing design, logic output synchronization, and integrated shielding. With its advanced range and numerous features, the SF4-AH28 is an excellent choice for controlling motion control and robotics, providing reliable results in almost any circumstance.

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