The RL29-8-H-1200-RT/73c/136 represents a specific model within the broad category of industrial photoelectric sensors. These devices are fundamental components in automation and control systems, utilizing light beams to detect the presence, absence, or distance of objects without physical contact. The designation "RL29-8-H-1200-RT/73c/136" follows a structured coding system that conveys its key technical specifications and configuration.
Breaking down the model number provides insight into its capabilities. The "RL29" series typically indicates a robust, cylindrical housing design suitable for industrial environments. The "8" often refers to the sensing distance, which in this case is 8 meters, making it suitable for medium to long-range detection tasks. The "H" commonly denotes a specific housing material or thread size, contributing to its environmental resilience. "1200" likely specifies the operating voltage range or a particular electrical characteristic. The suffix "RT/73c/136" provides further detail on the output configuration (e.g., relay or transistor output), switching function (e.g., light-on/dark-on), and connection type (e.g., cable or connector variant).
This sensor operates on the principle of modulated infrared light. It emits a focused beam; when an object interrupts this beam, the receiver detects the change, triggering an electrical output signal. The "RT" in the model suggests a particular output type, such as a relay contact or a specific transistor (PNP/NPN), which defines how it interfaces with controllers like PLCs. Its 8-meter range allows for flexible installation in applications where the sensor and target are not in close proximity.
A primary advantage of the RL29-8-H-1200-RT/73c/136 is its reliability in diverse conditions. The housing is engineered to withstand common industrial challenges, including dust, moisture (as suggested by potential IP ratings), and mechanical vibration. This durability ensures consistent operation in manufacturing plants, packaging lines, and material handling systems. The non-contact nature of detection eliminates wear and tear associated with mechanical limit switches, significantly reducing maintenance needs and downtime.
Typical applications for this photoelectric switch are extensive. In conveyor systems, it is used for object counting, jam detection, or position verification. In automated storage and retrieval systems, it can detect the presence of pallets or goods. It also finds use in safety systems as part of light curtains or access control, and in the automotive industry for part verification on assembly lines. The specific output configuration (73c/136) tailors it for direct compatibility with various control circuit voltages and logic levels.
When integrating the RL29-8-H-1200-RT/73c/136, several factors require consideration. Proper alignment between the emitter and receiver is critical for through-beam types, or correct positioning for reflective types. Environmental factors like ambient light, highly reflective backgrounds, or dirty lenses can affect performance, though many modern sensors include features to mitigate these issues. Electrical integration involves connecting the output to the correct load, ensuring voltage compatibility, and implementing necessary safeguards like short-circuit protection. Regular cleaning of the lens and periodic functional checks are recommended to maintain optimal sensing performance over the long term.
In summary, the RL29-8-H-1200-RT/73c/136 photoelectric switch is a versatile and robust solution for industrial automation. Its technical specifications, derived from its model number, indicate a device capable of reliable, long-range, non-contact detection. Understanding its operating principles, advantages, and application scenarios is essential for engineers and technicians to effectively deploy it, thereby enhancing efficiency, safety, and reliability in automated processes across numerous industries.
