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![Technical Explanation for Fiber Sensors - 1](https://img.directindustry.com/pdf/repository_di/15954/technical-explanation-fiber-sensors-913796_1m.jpg)
Technical Explanation for Fiber Sensors CSM_FiberSensor_TG_E_1_2 Introduction Sensors What Is a Fiber Sensor? A Fiber Sensor is a type of Photoelectric Sensor that enables detection of objects in narrow locations by transmitting light from a Fiber Amplifier Unit with a Fiber Unit. Sensing circuit Emitter Sensing object Receiver Fiber Unit Safety Components Light Sensing object Fiber Amplifier Unit 1. Detection in Narrow Locations The small sensing section and flexible Fiber Unit cable enable a Fiber Sensor to detect objects in narrow locations. Control Components 2. Superior Environmental Resistance The sensing section of a Fiber Unit has no electric circuits. This makes it highly reliable even under severe environmental conditions, such as temperature, vibration, shock, water, and electrical noise conditions. Automation Systems 3. Easy Installation The Fiber Unit can be installed close to the sensing object. This allows you to freely select where to install the Fiber Amplifier Unit. Motion / Drives 4. Virtually No Sensing Object Restrictions These Sensors operate on the principle that an object interrupts or reflects light, so they are not limited like Proximity Sensors to detecting metal objects. This means they can be used to detect virtually any object, including glass, plastic, wood, and liquid. Energy Conservation Support / Environment Measure Equipment 5. Fast Response Time The response time is extremely fast because light travels at high speed and the Sensor performs no mechanical operations because all circuits are comprised of electronic components. Power Supplies / In Addition 6. Non-contact Sensing There is little chance of damaging sensing objects or Sensors because objects can be detected without physical contact. This ensures years of Sensor service. 7. Color Identification The rate at which an object reflects or absorbs light depends on both the wavelength of the emitted light and the color of the object. This property can be used to detect colors. 8. Easy Adjustment Positioning the beam on an object is simple with models that emit visible light because the beam is visible.
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Technical Explanation for Fiber Sensors Operating Principles Safety Components Polarization of Light Light can be represented as a wave that oscillates horizontally and vertically. Fiber Sensors almost always use LEDs as the light source. The light emitted from LEDs oscillates in the vertical and horizontal directions and is referred to as unpolarized light. There are optical filters that constrain the oscillations of unpolarized light to just one direction. These are known as polarizing filters. Light from an LED that passes through a polarizing filter oscillates in only one direction and...
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Technical Explanation for Fiber Sensors (3) Structure and Principles Structure The Fiber Unit has no electrical components whatsoever, so it provides superior resistance to noise and other environmental influences. s Fiber Unit Fiber Amplifier Unit [L/D Indicator] Indicates the setting status: Light-ON (L) or Dark-ON (D). [DPC Indicator] Turns ON when Dynamic Power Control is effective. [OUT1 Indicator/OUT2 Indicator] Turns ON when OUT1 or OUT2 is ON. Safety Components [ L/D Button] Used to switch between Light-ON (L) and Dark-ON (D). [ST Indicator] Turns ON when Smart Tuning is in...
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Technical Explanation for Fiber Sensors Emitter fiber - White paper - Black paper - Glass, t = 0.7 SUS304 Classification (1) Classification by Sensing Method 1. Through-beam Sensors Sensing Method The emitter and receiver fibers are installed facing each other so that the light from the emitter enters the receiver. When a sensing object passing between the emitter and receiver fibers interrupts the emitted light, it reduces the amount of light that enters the receiver. This reduction in light intensity is used to detect an object. Sensing object Receiver fiber Features • Stable operation...
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Technical Explanation for Fiber Sensors Emitter fiber Structure which has a cladding around a large number of ultrafine cores. Structure only of one fiber Receiver fiber • Coaxial Reflective Fiber Units These Fiber Units offer better detection of small objects at close distances (of 2 mm or less) than Standard Reflective Fiber Units. They also detect glossy surfaces more reliably than Standard Reflective Fiber Units, even if the surface is tilted. The receiver fibers are arranged around the emitter fiber as shown below. Safety Components • Standard Fibers This fiber have a large bending...
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Technical Explanation for Fiber Sensors 5. Environmental Immunity Chemical-resistant, Oil-resistant 3. Beam Improvements Small-Spot, Reflective (Minute Object Detection) Made from materials that are resistant to various oils and chemicals. Small-spot to accurately detect small objects. Bending-resistant, Disconnection-resistant High-power Beam (Long-distance Installation, Dust-resistant) Safety Components Suitable for detection on large equipment, of large objects, and in environments with airborne particles Resistant to repeated bending on moving parts and breaking from snagging or shock....
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Technical Explanation for Fiber Sensors (4) Types of Fiber Amplifier Units For information on the types of Fiber Amplifier Units and Communications Unit, refer to the product pages on your OMRON website. Switches Safety Components Relays Control Components Automation Systems Motion / Drives Energy Conservation Support / Environment Measure Equipment Power Supplies / In Addition Others Common
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Technical Explanation for Fiber Sensors Explanation of Terms Item Explanatory diagram Meaning Sensors Sensing distance Throughbeam Sensors Emitter fiber Receiver fiber Sensing distance Retroreflective Sensors The maximum sensing distance that can be set with stability for Through-beam and Retro-reflective Sensors, taking into account product deviations and temperature fluctuations. Actual distances under standard conditions will be longer than the rated sensing distances for both types of Sensor. Emitter and receiver fibers Sensing Reflective distance Sensors Sensing object Emitter and...
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