The GLV18-55/25/102/115 photoelectric switch represents a critical component in modern industrial automation, offering reliable object detection across diverse applications. This sensor operates on the principle of light beam interruption or reflection to detect the presence, absence, or position of objects without physical contact. Its compact cylindrical housing, typically measuring 18mm in diameter with an M18 mounting thread, ensures easy integration into machinery and production lines. The model designation "GLV18-55/25/102/115" encodes specific technical characteristics: "55" often refers to the sensing distance in millimeters, "25" may indicate the thread length or a specific output configuration, while "102" and "115" could denote voltage ratings or specialized housing materials.
Photoelectric switches like the GLV18 series function through three primary operational modes: through-beam, retro-reflective, and diffuse reflective. In through-beam mode, separate emitter and receiver units align to create a detection zone; object presence interrupts the beam. Retro-reflective models utilize a reflector to bounce light back to the receiver housed in the same unit, simplifying installation. Diffuse reflective variants detect objects by measuring light reflected directly from the target surface, ideal for uneven or colored materials. The GLV18-55/25/102/115 typically incorporates advanced features such as adjustable sensitivity, built-in timers, and immunity to ambient light interference, ensuring stable performance in challenging environments like packaging, material handling, and assembly automation.
Key technical specifications include a standard operating voltage range of 10-30V DC, with "102" possibly indicating a 10-30V DC variant and "115" a 12-24V AC/DC model. The switch offers either NPN (sinking) or PNP (sourcing) transistor outputs, compatible with PLCs and control systems. Its housing is constructed from nickel-plated brass or stainless steel, providing IP67 protection against dust and water ingress. The sensing distance of 55mm allows precise detection of small components, while the 25mm thread length ensures secure mounting. LEDs for power and output status facilitate quick diagnostics and setup.
Installation requires aligning the sensor perpendicular to the target path, avoiding reflective backgrounds that could cause false triggers. Regular maintenance involves cleaning the lens with a soft cloth and checking for mechanical damage or misalignment. Common applications include conveyor belt monitoring, bottle cap detection in bottling plants, part positioning in CNC machines, and safety curtain implementation in robotic cells. Compared to inductive or capacitive sensors, photoelectric switches excel at detecting non-metallic objects like plastic, wood, and glass, making the GLV18-55/25/102/115 versatile for mixed-material production environments.
When selecting a photoelectric switch, engineers must consider factors such as response time (often under 1ms for the GLV18 series), environmental conditions (temperature ranges from -25°C to 70°C), and target material properties. The model's robust design minimizes downtime in high-cycle operations, while its compatibility with industry-standard mounting accessories simplifies replacement and upgrades. As Industry 4.0 advances, sensors like the GLV18-55/25/102/115 form the backbone of smart manufacturing systems, enabling real-time data collection for predictive maintenance and process optimization.
In summary, the GLV18-55/25/102/115 photoelectric switch delivers precision, durability, and flexibility for automated systems. Its encoded specifications cater to specific operational needs, ensuring reliable performance in detecting objects across manufacturing, logistics, and safety applications. Proper selection, installation, and maintenance maximize its lifespan and contribute to efficient, uninterrupted industrial operations.
