E3X-NL112M

Optical Fiber Glossy Object Sensor E3X-NL E3X-NL Utilization lightwave technology has innovated glossiness detection. OMRON's glossy object sensor can discriminate a wide variety of glossiness differences. The fiber-optic system has achieved the small, non-contact models. Features Employs OMRON's unique FAO (Free Angle Optics) technology which enables delicate sensing of object glossiness without influence from colors and patterns. Transparent films on boxes and labels on transparent films can be detected. Two different types of fiber heads meet a wide range of applications. Two different fiber heads are available. According to applications, you can choose the short-distance, small spot type ideal for detection of small objects or the longdistance type that can perform in-line standard detection. Short-distance, small spot type Short-range small spot E32-S15-1/-2 E32-S15L-1/-2 Ideal for precision detection and small object detection. Resistant to object shake and enables in-line standard detection. Long-range The teaching system ensures easy adjustment just by pressing the button. ● Adjustment man-hour saving type requiring only a one-time pressing of the button ● Teaching system only requires to push the button, ensuring sensitivity adjustment without individual differences. Long-distance type 10 ± 3 m m Small spot in 2 mm dia. 20 ± 7 m m Adopts the pulse-ON system that is insensitive to disturbance light The emitter (red LED) in the fiber head uses a pulse-ON system to minimize the influence of disturbance light. The Sensor provides stable sensing characteristics if disturbance light occurs from fluorescent lamps in-line. Amplifier Units E3X-NL11 E3X-NL A-197 Application Short-distance, small spot type Detection of tacked labels Detection of grease or adhesive on parts Detection of pipe, can or similar joints Detection of shrink tubes Transparent shrink tubes can be detected stable. Detection of sealing tape Long-distance type Detection of on-bottle labels insensitive to distance variation or object inclination, enabling label detection on conveyor line. Features Principles for Glossiness Detection by FAO Fuzzy Teaching Function Backs up Stable Detection First, the light from a red LED passes through a polarizing filter so only the S wave is emitted. If the detectable object is glossy, the S wave is reflected regularly and is transmitted as is to the Fiber Receiver 1. If the detectable object is not glossy, there is more diffuse reflection, thus the polarization direction is randomized and a P wave is generated. The S and P waves are divided by the FAO (special polarized beam splitter), the waves travel to their respective fiber receivers, and the variation in the glossiness is determined by comparing the two received signals. Supported by the fuzzy teaching function if objects have no difference in glossiness. If the glossiness difference goes below than the minimum sensing lev- Difference in Difference in light energy el, the microprocessor in the grossiness amplifier determines the discrimination means automatically. Distinction means Sensed by light energy difference like an ordinary mark sensor. Output (When 2-point teaching is selected) Received fiber 2 (P wave only) FAO Received fiber 1 (S wave only) ion S Emiss Emitter Lens S wave: vertical P wave: parallel wave Polarized filter only Sensing object Measures against Double Refraction There are transparent films and transparent plastic objects that change the direction of polarized light when it passes through the transparent films and transparent plastic objects. This is called double refraction. Using the optional rotary mounting bracket (E39-L109), the sensor unit can be inclined 45 degrees to take measures against double refraction. (Example) Metal cylindrical object coated with transparent film Metal cylindrical object coated with transparent film 45˚ Sensing head The object can be sensed smoothly when the angle of the sensing head is either 0˚ or 45˚. A-198 Standard Photoelectric Sensors Ordering Information Sensors Connection method Pre-wired type Shape E3X-NL Amplifier Units Model 33 E3X-NL11 59 32.2 Fiber Units Red light Sensor type Shape Sensing distance Fiber length Model 0.5 m E32-S15-1 1m E32-S15-2 0.5 m E32-S15L-1 1m E32-S15L-2 10 ± 3 mm Reflective model 20 ± 7 mm Accessories (Order Separately) Mounting Brackets Shape Model Quantity Remarks E39-L109 1 Can be used with the fiber unit E32-S15-#. Mounting bracket variable in rotary angle (0°, 45°) for stable detection of transparent films (double-refractive objects) on glossy objects such as metal or glass plates. Model Quantity Remarks 1 Attached to the amplifier unit E3X-NL11. Please place an order when the protective cover is damaged or lost. Covers Shape E39-G9 E3X-NL A-199 Rating/Performance Amplifier Units Item Model E3X-NL11 Light source (wave length) Red LED (680 nm) Power supply voltage 12 to 24 VDC ±10%, ripple (p-p) : 10% max. Current consumption 100 mA max. Control output Load supply voltage 30 VDC max., load current 100 mA max. (residual voltage 1 V max.) Open collector output type (NPN output) Light-ON/Dark-ON switch selectable Answer-back output Load power supply voltage 30 VDC max., load current 100 mA max. (residual voltage 1 V max.) Open collector output type (NPN output) Protective circuits Purple and blue (0 V) are connected when remote input turns ON: 0 V short-circuit current 1 mA max. Purple and blue (0 V) are disconnected when remote input turns OFF: Open or 9 V min. (max. input voltage 24 V). Note that the input is valid only when remote RUN/TEACH selection input (across pink-blue) is provided. Protection from load short-circuit and reversed power supply connection Response time Operation or reset: 1 ms max. Sensitivity adjustment Teaching system Timer function * OFF-delay fixed at 40 ms Remote teaching input Ambient illuminance Incandescent lamp: 3,000 lux max. Sunlight 10,000 lux max. Ambient temperature Operating: -25°C to 55°C, Storage: -40°C to 70°C (with no icing or condensation) Ambient humidity Operating: 35% to 85% RH, Storage: 35% to 95% RH (with no icing or condensation) Insulation resistance 20 M Dielectric strength 1,000 VAC at 50/60 Hz for 1 minute Vibration resistance 10 to 55 Hz, 1.5-mm double amplitude or 300 m/s2 (approx. 30G) for 2 hrs each in X, Y, and Z directions Shock resistance Destruction: 500 m/s2 for 3 times each in X, Y, and Z directions min. at 500 VDC Protective structure IEC 60529 IP50 (with Protective Cover attached) Connection method Pre-wired models (standard length: 2 m) Weight (Packed state) Approx. 200 g Material Case PBT (polybutylene terephthalate) Cover Polycarbonate Mounting Brackets Stainless steel (SUS304) Accessories Mounting bracket, instruction manual * The OFF-delay timer can be reset by setting the switch. Fiber Units Sensing method Reflective model Features Item Model Long-range Short-range small spot E32-S15-1 E32-S15-2 E32-S15L-1 E32-S15L-2 20±7 mm (white paper, white glossy plastic 40x20 mm) Sensing distance 10±3 mm (white paper, white glossy plastic 40x20 mm) Min. sensing object 0.5-mm 2-mm Sensing object angle Glossiness determination is possible at 4° inclination from the mounting hole (at sensing distance of 10 mm) Glossiness determination is possible at 7° inclination from the mounting hole (at sensing distance of 20 mm) Spot diameter Approx. 2-mm dia./approx. 2-mm dia. (at sensing Approx. 15-mm dia./approx. 4-mm dia. (at sensdistance of 10 mm) ing distance of 20 mm) Ambient temperature Operating: -25°C to 55°C, Storage: -40°C to 70°C (with no icing or condensation) Ambient humidity Operating: 35% to 85%RH, Storage: 35% to 90% RH (with no condensation) Permissible bending radius 4 mm min. Protective structure IEC 60529 IP50 Fiber length 500 mm 1m 500 mm 1m Approx. 50 g Approx. 60 g Approx. 80 g Approx. 90 g Weight (Packed state) Sensor case Material A-200 Heat-resistant ABS resin Sensor window transparent glass Fiber cladding urethane Acrylics Standard Photoelectric Sensors Characteristic data (typical) Glossiness vs. Operating Range (Typical) Glossiness vs. Angle (Typical) 120 120 Set distance 100 10mm 100 White glossy plastic 80 Sensing object: 40 ¥ 20 mm Relative glossiness (%) Sensing object: 40 x 20 mm 60 White glossy plastic 80 White drawing paper 40 20 5 10 15 20 -5 0 5 120 Set distance 100 80 White glossy plastic 60 140 Sensing object: 40 ¥ 20 mm 120 10mm 100 80 White glossy plastic 60 40 40 20 20 10 20 30 White drawing paper -5 0 5 0 -15 40 10 E3X-NL11 + E32-S15L-# (Y direction) + 140 + 120 Sensing object: 40 ¥ 20 mm 20mm 100 White glossy plastic 80 60 White drawing paper 0 80 Angle (˚) Relative glossiness (%) Relative glossiness (%) Sensing object: 40 ¥ 20 mm 100 Angle (˚) E3X-NL11 + E32-S15-# (Y direction) 140 20mm 0 -10 10 Set distance (mm) E3X-NL11 with E32-S15L-# - White glossy plastic 20 0 -10 25 120 + Sensing object: 40 ¥ 20 mm 40 20 0 140 60 60 White drawing paper 40 Relative glossiness (%) E3X-NL11 + E32-S15L-# (X direction) + 140 E3X-NL E3X-NL11 + E32-S15-# (X direction) 140 Relative glossiness (%) Relative glossiness (%) E3X-NL11 with E32-S15-# White drawing paper White drawing paper 40 20 -10 -5 0 5 10 0 -15 15 -10 -5 0 5 Angle (˚) Set distance (mm) 10 15 Angle (˚) Output Circuit Diagram NPN output Model Output transistor Status Timing chart Mode selection switch Output circuit Incident Light ON Interrupted Light indicator ON (orange) OFF Output ON transistor OFF Load Operate (e.g., relay) Reset T L ON (Between brown and T: OFF delay timer black terminals) The change for 0 or 40ms (fixed) is possible. Teaching indicator (red/green) E3X-NL11 Incident Interrupted Dark ON Light indicator ON (orange) OFF Output ON transistor OFF Load Operate (e.g., relay) Reset Operation indicator (orange) Stability indicator (green) Main circuit Brown Load Black Load Control output Orange Answer-back output 12 to 24 VDC Blue T Pink D ON Purple Remote RUN/TEACH input Remote teaching input (Between brown and T: OFF delay timer black terminals) The change for 0 or 40ms (fixed) is possible. E3X-NL A-201 Technical Guide Glossiness Glossiness When light is applied to the sensing object, the reflected light is generally a mixture of regular reflection components and diffuse reflection components. Glossiness is directly proportional to the light intensity of the regular reflection components. In JIS, the glossiness of a glass plate surface having 1.567 reflectivity is defined 100 as the basis of glossiness. Glossiness of Typical Object Sensed by E3X-NL11 + E32S15 (Example) Metal cylindrical object coated with transparent film Metal cylindrical object coated with transparent film 45˚ Sensing head 1,000 The object can be sensed smoothly when the angle of the sensing head is either 0˚ or 45˚. Fuzzy Teaching Function E3X-NL in two-point teaching operation will perform fuzzy computation using the difference in glossiness and the difference in light energy between the two teaching points to determine the thresholds setting with E3X-NL. As shown in the following table, if there is only a small difference in glossiness but there is a large difference in light energy between the two teaching points, the thresholds set with E3X-NL will be determined by the light energy values. 100 3 4 5 6 7 8 9 Taught Difference in glossiness between two teaching points 10 Object no. Sensing of Transparent Objects with Rotating Fiber Unit Mounting Bracket There are transparent films and transparent plastic objects that change the direction of polarized light when it passes through the transparent films and transparent plastic objects. When E3X-NL senses these transparent films and transparent plastic objects on glossy background objects, such as glossy paper or metals, E3X-NL will not sense these objects smoothly in case of an incorrect angle of the sensor head. The most suitable angle of the sensor head varies with the transparent object. The angle of the sensor head can be, however, 0° or 45° for the smooth sensing of such transparent objects due to the characteristic of polarized light. There is no need for the angle to be midway between 0° and 45°. E39-L109, which is sold separately, is a mounting bracket that rotates to angles of 0° or 45° and enables E3X-NL to sense such transparent objects smoothly with its sensing head set at 0° or 45° without changing the sensing positive. Taught Difference in light energy between two teaching points Discriminating method Large Large Large Small Discriminated by glossiness. Small Large Discriminated by light energy. Small Discriminated by glossiness. A teaching error will result if the difference in glossiness and that in light energy are both less than the sensing levels of E3X-NL. Small Discriminated by glossiness. Large 2 Difference in glossiness 1. White paper 2. Brown corrugated cardboard 3. Paper gummed tape 4. White glossy paper (individual packages for OMRON sensors) 5. Blue mount paper for label 10 6. Transparent label on blue mount paper 7. Glossy plastic 8. Transparent glass (t=1 mm) 9. Gold printing ink (Gold part of Cabin Mild Box) 1 10. Metal mirror surface (SUS mirror surface) Discriminated by glossiness Fuzzy discrimination of glossiness and light energy Discriminated by light energy Small Teaching error Difference in light energy Large Countermeasures against Teaching Errors Resulted with Transparent Labels on Sheets The material of the sheets must not be too glossy. Nomenclature: Stability indicator (green) Teaching indicator (red/green) Operation mode selector A-202 Operation indicator (orange) Teaching button Mode selector Standard Photoelectric Sensors Operation Sensitivity setting Pro cedur e Setting Operation Pro cedur e 1 --- Locate the sensor head within the sensing distance. 1 2 TEACH RUN TIMER ON OFF Setting TEACH RUN TIMER ON OFF Object Move the mode selector to the TEACH position. 2 Teaching indicator ... Lit red The built-in buzzer beeps once. TEACH 3 Operation Press the teaching button with one of the sensing objects or the background object located under the sensor for sensing. Move the mode selector to the TEACH position. Press the teaching button once with a sensing object located under the sensor as shown in the following illustration. E3X-NL One-point teaching Two-point teaching 3 TEACH RUN TIMER ON OFF Move the mode selector to the RUN position. 1-point teaching setting is complete as soon as the first object passes. Teaching indicator ... Lit red green Lit Base 4 L.ON D.ON Teaching indicator ... Lit red The built-in buzzer beeps once. Select the desired operation format with the operation mode selector (L.ON/D.ON). With an object absent (ground), press the TEACHING button (second time). Object TEACH Base If teaching is OK Teaching indicator ... Lit red The built-in buzzer beeps once. If teaching is NG 4 Lit green Teaching indicator ... Lit red Flickers red The built-in buzzer beeps 3 times. Change the object position and setting distance again and make setting in order of 1 to 4. 5 6 TEACH RUN TIMER ON OFF L.ON D.ON E3X-NL Move the mode selector to the RUN position. Sensitivity setting is complete. Teaching indicator ... Lit green guished Extin- Light Dark Select the desired operation format with the operation mode selector (L.ON/D.ON). A-203 Precautions Correct Use Fiber Units Installation Tightening Force For the fiber unit installation, tighten it to the torque of 0.3 Nm max. ● For adjustment Two-point Teaching and One-point Teaching Refer to the following information to select the most suitable sensitivity setting method for the application. Sensitivity setting method Fiber Connection and Disconnection E3X-NL amplifier has a push lock. Connect or disconnect the fibers to or from E3X-NL amplifier using the following procedures: 1. Connection After inserting the fiber into the Amplifier, push the lock button until a click sound is heard so that the fiber is securely connected. Difference Two-point teaching One-point teaching In general, use 2-point teaching. The fuzzy teaching function (refer to Technical Guide) is activated to set the optimum algorithms automatically, drawing an operation level just about between the two points taught. One-point teaching should be performed for the sensing of different objects on a single background object or a single type of objects on a variety of glossy background objects. The operating level will be set 15% above or below the teaching point, depending on the glossiness of the first sensing object. The fuzzy teaching function is not activated for 1-point Lock button Fiber insertion mark 2. Disconnection Ensure to press the push lock again to unlock before pulling out the fiber, otherwise the fiber may be deteriorated. (To maintain the fiber characteristics, remove the fiber after making sure that the lock has been released.) Locked Unlocked Lock button 3. The fiber must be locked or released in a temperature range of -10° to 40°. Since face-to-face isntallation of the fiber units may cause mutual interference, mount them so that the optical axes of the sensors are not opposed. Selection of Teaching Point(s) Two-point Teaching If E3X-NL is used to sense sensing objects that are only a little different in glossiness from the background object and the sensing objects have color patterns, the difference in glossiness among the inks on the sensing objects may influence the sensing operation of E3X-NL. Therefore perform two-point teaching with E3X-NL at a place where E3X-NL can sense the sensing objects smoothly while considering the characteristics of glossiness versus distance of E3X-NL if the sensing position of each of the sensing objects is different from each other. One-point Teaching If E3X-NL is used to sense sensing objects different from each other in glossiness on a single background object, perform one-point teaching with E3X-NL using the background object. If E3X-NL is used to sense identical sensing objects on a variety of glossy background objects, perform one-point teaching with E3X-NL using one of the sensing objects. Operation Level Setting and Control Output for One-point Teaching Control output (L·ON) Glossiness Vth selection Monting the sensor If two or more sensors are used, face-to-face installation of the fiber units or the regularly reflected light from the sensing object may cause mutual interference. At this time, adjust the fiber units to be mounted at the angles where the light of each sensor is not received by the fiber unit of the other sensor. +15% Teaching Vth on upper side -15% Vth on lower side ON OFF Glossiness TEACH mode RUN mode +15% Teaching Vth on upper side -15% Vth on lower side Control output (L·ON) Vth selection ON OFF TEACH mode A-204 RUN mode Standard Photoelectric Sensors (Remote 2-point teaching) T1 * H Remote RUN/TEACH input L Remote teaching input Procedure Operation T2 * 1.0 to 1.3s T1 T2 1.0 to 1.3s T1 E3X-NL Remote teaching function In remote teaching, the remote RUN/TEACH input signal is used for teaching instead of the mode selector and the remote teaching input signal is used instead of the teaching button. H L H 0.5s 0.5s 0.5s 0.5s 0.5s 0.5s Answer-back output L (If teaching is OK.) 1 Set the mode selector to RUN . H Answer-back output L The following signal conditions must be given as remote teaching input conditions. Brown +V (Remote 1-point teaching) T1 * H T2 * 1.0 to 1.3s T1 Remote RUN/TEACH input L Purple Remote teaching input Pink Remote RUN/TEACH input 0.1s * Note: T1 must be 20 ms minimum and T2 must be 500 ms minimum at the time of remote teaching. Black Control output Orange Answer-back output 0.1s (If teaching is NG.) Remote teaching input H L H 0.5s Answer-back output Blue 0V 2 A If there is a teaching error after performing remote twopoint teaching with E3X-NL, try performing remote twopoint teaching again. If the remote RUN/TEACH input is set from L to H after the teaching error, the thresholds set with E3X-NL will not be refreshed. B When remote teaching is not performed, cut the pink and purple wires at the root of the cable or connect them to the + side (+V) of the power supply, and cut the orange wire at the root of the cable or connect it to GND (0 V). C About 1 s after remote teaching is over, the Sensor is made ready to detect an object. L Miscellaneous EEPROM Write Error If a write error occurs (buzzer beeps, red and green teaching indicators flicker at the same time, operation and stability indicators flicker) due to power-off, static electricity or other noise in the teaching mode (until the initial operation level compensation completion of teaching without object), perform teaching again with the unit button. Note: If a memory error occurs, the red and green teaching indicators flicker at the same time and the stability indicator flickers, unlike the teaching error. E3X-NL A-205 Dimensions (Unit: mm) Sensors Amplifier Units E3X-NL11 With Mounting Blanket Attached Operation indicator Stability indicator Fiber Units Short-distance, small spot type E32-S15-# 10.4 Vinyl-insulated round cable of 4 dia. 6 cores conductor cross-sectional area: 0.3 mm²; insulation diameter: (A) * 1.04 mm Standard length: 2 m 10 Mounting Holes 29 Sensing surface (8 x 15.6) 9.2 13.2±0.2 500 mm (E32-S15-1) 1 m (E32-S15-2) 29 16.5 31 15x15 7 13 Emitter 10 8.3 2-M3 Sensing head 13.2 Receiver wo, 3.3 dia. mounting holes 8 Window Optical fiber 6 dia. Sleeve 10.8 * Mounting brackets can be used on the A side. 24.9 6.2 32.2 Three, 2.5 dia. Fiber Units Long-distance type E32-S15L-# 59 33 8 32.5 10.7 Sensing head Mounting Holes Sensing surface (18 x 35) 3.8 7 4.15 4.1 22.4 16±0.2 13 34.8 20.4 20 15.3 Receiver 2-M3 47 22 15x15 7 22±0.2 6.1 Two, 3.2 dia. mounting holes Stainless steel (SUS304) 8 Two, mounting holes 42 Mounting Holes 2-M3 500 mm (E32-S15L-1) 1 m (E32-S15L-2) 31 21.5 16±0.2 5.4 Window 3.4 22.4 13 Emitter 9.5 Two, 3.3 dia. mounting holes Optical fiber 6 dia. Sleeve 16±0.2 Accessories (Order Separately) H-5 ALL DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527. Cat. No. E248-E2-02-X A-206 In the interest of product improvement, specifications are subject to change without notice. Standard Photoelectric Sensors