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INDUSTRIAL SENSORS


I4.0 Compatible Optical Sensors


Optical Sensors with 1500mm detection range and anti-fouling technology bring greater scope to industrial environments.


G


lobal automation and control specialist, Omron has launched its E3AS Series reflective-type photoelectric sensors with the smallest body and longest sensing distance of 1,500 mm in their


class, comprising similar style reflective sensors with a 25.4mm (1 inch) mounting pitch. Photoelectric sensors detect either the presence of objects or the passing of objects using optical properties and are therefore a key element of industrial automation systems. When emitted light is interrupted or reflected by the sensing object, the amount of light that arrives at the receiver changes, and the presence or passing of an object is detected. The Omron E3AS sensors provide stable detection without being influenced by sensing distances or different colours, materials and surfaces of the objects. This makes selection, adjustment and maintenance of sensors easier, and improves system commissioning and operation efficiency. E3AS Sensors can be used, for example, in high-mix conveyor lines carrying products of various colours and shapes, and assembly lines with restricted space for sensor installation.


MANUFACTURING ENVIRONMENTS Fast commissioning and stable operation are critical at manufacturing sites. To meet this need, Omron has increased the sensing distance with the E3AS Series to five times longer than in the previous models, such as the company’s earlier E3Z-LL range of products. The detection principle of the E3AS Series is Time of Flight (TOF) that enables high detection stability regardless of the characteristics of sensing objects. With TOF, the distance to a sensing object is calculated by measuring the time in which a pulsed laser passes from the emitter to reach the object and return to the sensor. It is less influenced by the characteristics of the object, dramatically increases the stability of presence detection and reduces the time for selection and adjustment. This makes it easier to select and adjust the sensors.


In addition, the industry’s first antifouling coating on the sensing surface reduces false detection and maintenance frequency in environments where oil,


2 /// DAQ, Sensors & Instrumentation Vol 3 No. 1


❱ ❱ Small long range Time-Of- Flight sensors provide flexibility for industrial automation


❱ ❱ Anti-Fouling coating ensures the sensor maintains reliable detection in dirty environments


dust or steam is present or being generated. The E3AS Series helps improve system commissioning and operation in material handling and assembly processes.


DIGITAL ENTERPRISES Sensor manufacturers are increasingly becoming more compliant with the concept of digital industry, including Industry 4.0 (I4.0) for manufacturing and distribution organisations. Omron is catering for the needs of the latest


generation of enterprises by ensuring its sensors are subject to constant innovation to improve connectivity, interoperability and interaction capabilities with engineers and technicians. To this end, Omron developed and embarked upon


a strategic concept called “Innovative-Automation” consisting of three innovations or “i’s”--”integrated” (control evolution), “intelligent” (development of intelligence by ICT), and “interactive” (new harmonisation between humans and machines). By improving system commissioning and operation using the E3AS Series, Omron is continuing to solve problems at manufacturing sites including labour shortages, and to accelerate the implementation of “innovative-Automation” together with its customers.


INNOVATIVE FEATURES Sensing distance


With its small body size and wide sensing range of between 50 and 1500mm, the E3AS Series eliminates the need to select different sensors based on application. In manufacturing and distribution environments, where distances to the sensing object can vary based on actuator position or conveyor width, one sensor can be used for reliable and repeatable detection. Construction material Users can select either a model with a metal or a plastic case to meet their installation environment


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