The OBS4000-18GM60-E4-V1 represents a specific model within the category of industrial photoelectric sensors, designed for precise object detection in demanding environments. As a through-beam photoelectric switch, it operates on the principle of a separate transmitter and receiver. The transmitter emits a focused beam of light, typically from a modulated infrared LED source, which is then received by a separate sensor unit. An object is detected when it interrupts this light beam. This fundamental operating mode makes the OBS4000-18GM60-E4-V1 particularly suitable for applications requiring long sensing ranges, high speed detection, or reliable operation in environments with airborne contaminants that could adhere to the sensor lens.
A key specification of this model is its 18-meter operating range, denoted by the "18" in its part number. This extended range allows for flexible installation in large-scale industrial setups, such as conveyor systems in logistics centers, large automated storage and retrieval systems (AS/RS), or monitoring entry/exit points on lengthy production lines. The "GM" typically indicates a metal housing, providing robust mechanical protection and enhanced resistance to physical impact, oils, and coolants commonly found in industrial settings like machining centers or automotive assembly plants. The "60" often refers to the size or thread diameter of the housing, which is a standard metric size facilitating easy mounting using standard locknuts.
The suffix "E4-V1" is crucial as it relates to the device's electrical characteristics and output configuration. The "E4" commonly signifies a PNP output type, which is a sourcing output. In this configuration, the sensor's output switch connects the positive voltage supply to the load (e.g., a PLC input, relay, or indicator) when an object is detected. This is the prevalent standard in many European and Asian control systems. The "V1" variant often specifies the output function, such as light-on or dark-on operation, and may include features like a teach-in function for simplified setup or a short-circuit protected output. Understanding these electrical details is essential for proper integration into a control cabinet and ensuring compatibility with the programmable logic controller (PLC) or other control units.
Installation and alignment are critical factors for the reliable operation of a through-beam sensor like the OBS4000-18GM60-E4-V1. Since it relies on a precise optical path, the transmitter and receiver must be accurately aligned. Many models feature alignment aids such as visible red light beams or alignment status LEDs. For an 18-meter range, stable mounting brackets are necessary to prevent misalignment due to vibration or thermal expansion. Environmental considerations are also paramount. While through-beam sensors are generally less affected by target color, reflectivity, or surface finish compared to diffuse reflective sensors, their performance can be degraded by heavy accumulation of dust, steam, or frost directly on the lenses. In such conditions, periodic maintenance or the use of protective air curtains may be required.
Typical industrial applications leverage the strengths of this sensor type. In packaging machinery, it can detect the presence or absence of products on high-speed filling lines over long distances. In the automotive industry, it is used for vehicle positioning in assembly stations or for ensuring robotic tooling is clear before a cycle starts. In material handling, it serves as a safety curtain or as a counting sensor for boxes on wide conveyor belts. Its robust metal housing makes it suitable for outdoor applications like gate control or vehicle detection in parking management systems, provided it has an appropriate ingress protection (IP) rating.
When selecting a sensor like the OBS4000-18GM60-E4-V1, engineers must verify all parameters against the application requirements. This includes the required sensing distance (with a safety margin), the supply voltage range (e.g., 10-30 V DC), the output current capacity, the response time (critical for high-speed detection), and the environmental ratings for temperature, humidity, and IP protection. Consulting the official manufacturer's datasheet is non-negotiable for confirming these exact specifications, as naming conventions can vary between manufacturers. Proper selection ensures not only functionality but also longevity and reduced downtime in automated systems.
