e3x-nl a-197 e3x-nl optical fiber glossy object sensor e3x-nl utilization lightwave technology has inno- vated glossiness detection. omron's glossy object sensor can discriminate a wide variety of glossi ness 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. the teaching system ens ures easy adjust- ment just by pr essing the button. 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 long- distance type that can perfo rm in-line standard detection. adopts the pulse-on system that is insensi- tive to disturbance light the emitter (red led) in t he fiber head uses a pulse-on system to minimize the influenc e of disturbance light. the sensor provides stable sensing characteristics if disturbance light occurs from fluorescent lamps in-line. adjustment man-hour saving type requiring only a one-time pressing of the button teaching system only re- quires to push the button, en- suring sensitivity adjustment without individual differences. long-range short-range small spot short-distance, small spot type long-distance type ideal for precision detection and small object detection. e32-s15l-1/-2 resistant to object shake and enables in-line standard detec- tion. 20 7 mm e32-s15-1/-2 10 3 mm small spot in 2 mm dia. amplifier units e3x-nl11
a-198 standard photoelectric sensors application short-distance, small spot type long-distance type features principles for glossiness detection by fao first, the light from a red led passes through a polarizing fil- ter so only the s wave is emitted. if the detectable object is glossy, the s wave is reflected reg- ularly and is transmitted as is to the fiber receiver 1. if the detectable object is not glossy, there is more diffuse re- flection, 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 receiv- ers, and the variation in the glossiness is determined by com- paring the two received signals. fuzzy teaching function backs up stable detection supported by the fuzzy teaching function if objects have no difference in glossiness. if the glossiness difference goes be- low than the minimum sensing lev- el, the microprocessor in the amplifier determines the discrimi- nation means automatically. sensed by light energy difference like an ordinary mark sensor. (when 2-point teaching is selected) 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 tran sparent 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 detection of tacked labels detection of grease or adhesive on parts detection of pipe, can or similar joints detection of on-bottle la bels insensitive to distance variation or object inclination, en- abling label detecti on on conveyor line. detection of shrink tubes transparent shrink tubes can be detected stable. detection of sealing tape received fiber 1 (s wave only) received fiber 2 (p wave only) polarized filter fao emission s wave only sensing object emitter lens s wave: vertical p wave: parallel metal cylindrical object coated with transparent film sensing head the object can be sensed smoothly when the angle of the sensing head is either 0 ? or 45 ? . 45 ? difference in grossiness distinction means output difference in light energy
a-199 e3x-nl e3x-nl ordering information sensors amplifier units fiber units accessories (order separately) mounting brackets covers connection method shape model pre-wired type e3x-nl11 sensor type shape sensing distance fiber length model reflective model 0.5 m e32-s15-1 1 m e32-s15-2 0.5 m e32-s15l-1 1 m e32-s15l-2 shape model quantity remarks e39-l109 1 can be used with the fiber unit e32-s15- # . mounting bracket vari- able in rotary angle (0, 45) for sta- ble detection of transparent films (double-refractive objects) on glossy objects such as metal or glass plates. shape model quantity remarks e39-g9 1 attached to the amplifier unit e3x-nl11. please place an order when the protective cover is damaged or lost. 32.2 33 59 red li g ht 10 3 mm 20 7 mm
a-200 standard photoelectric sensors rating/performance amplifier units * the off-delay timer can be reset by setting the switch. fiber 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) remote teaching input 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. protective circuits 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 ambient illuminance incandescent lamp: 3,000 lux max. sunlight 10,000 lux max. ambient temperature operating: -25c to 55c, storag e: -40c to 70c (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 min. at 500 vdc 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/s 2 (approx. 30g) for 2 hrs each in x, y, and z directions shock resistance destruction: 500 m/s 2 for 3 times each in x, y, and z directions protective structure iec 60529 ip50 (with protective cover attached) connection method pre-wired models (standard length: 2 m) weight (packed state) approx. 200 g mate- rial case pbt (polybutylene terephthalate) cover polycarbonate mounting brackets stainless steel (sus304) accessories mounting bracket, instruction manual sensing method reflective model features short-range small spot long-range item model e32-s15-1 e32-s15-2 e32-s15l-1 e32-s15l-2 sensing distance 103 mm (white paper, white glossy plastic 40x20 mm) 207 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 distance of 10 mm) approx. 15-mm dia./approx. 4-mm dia. (at sens- ing distance of 20 mm) ambient temperature operating: -25c to 55c, storage: -40c to 70c (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 1 m 500 mm 1 m weight (packed state) approx. 50 g approx. 60 g approx. 80 g approx. 90 g material sensor case heat-resistant abs resin sensor window transparent glass acrylics fiber cladding urethane
a-201 e3x-nl e3x-nl characteristic data (typical) output circuit diagram npn output glossiness vs. operating range (typical) glossiness vs. angle (typical) e3x-nl11 with e32-s15- # e3x-nl11 + e32-s15- # (x direction) e3x-nl11 + e32-s15l- # (x direction) e3x-nl11 with e32-s15l- # e3x-nl11 + e32-s15- # (y direction) e3x-nl11 + e32-s15l- # (y direction) model output transis- tor status timing chart mode selec- tion switch output circuit e3x-nl11 light on l on dark on d on 140 120 100 80 60 40 20 set distance (mm) 0 5 10 15 20 25 white drawing paper white glossy plastic sensing object: 40 x 20 mm set distance relative glossiness (%) 140 120 100 80 60 40 20 0 angle ( ? ) - 10 - 50 510 10mm relative glossiness (%) white drawing paper white glossy plastic sensing object: 40 20 mm - + 140 120 100 80 60 40 20 0 angle ( ? ) - 10 - 50 510 20mm relative glossiness (%) white drawing paper white glossy plastic sensing object: 40 20 mm - + 140 120 100 80 60 40 20 set distance (mm) 010203040 set distance relative glossiness (%) white drawing paper white glossy plastic sensing object: 40 20 mm 140 120 100 80 60 40 20 0 angle ( ? ) - 15 - 10 - 50 51015 10mm relative glossiness (%) white drawing paper white glossy plastic sensing object: 40 20 mm - + 140 120 100 80 60 40 20 0 angle ( ? ) - 15 - 10 - 50 51015 20mm relative glossiness (%) white drawing paper white glossy plastic sensing object: 40 20 mm - + light indicator (orange) output transistor load (e.g., relay) incident interrupted on off on off operate reset (between brown and black terminals) t: off delay timer the change for 0 or 40ms (fixed) is possible. t stability indicator (green) operation indicator (orange) teaching indicator (red/green) main circuit 12 to 24 vdc remote run/teach input remote teaching input answer-back output control output brown black orange blue pink purple load load light indicator (orange) output transistor load (e.g., relay) incident interrupted on off on off operate reset (between brown and black terminals) t: off delay timer the change for 0 or 40ms (fixed) is possible. t light indicator (orange) output transistor load (e.g., relay) incident interrupted on off on off operate reset (between brown and black terminals) t: off delay timer the change for 0 or 40ms (fixed) is possible. t
a-202 standard photoelectric sensors technical guide 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 propor- tional to the light intensity of the regular reflection compo- nents. 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 + e32- s15 sensing of transparent obje cts 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 transpar- ent plastic objects on glo ssy 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 trans- parent object. the angle of t he sensor head can be, however, 0 or 45 for the smooth sensin g of such transparent objects due to the characteristic of po larized 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 trans- parent objects smoothly with its sensing head set at 0 or 45 without changing the sensing positive. fuzzy teaching function e3x-nl in two-point teaching operation will perform fuzzy computation using the difference in glossiness and the differ- ence in light energy between the two teaching points to deter- mine 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 deter- mined by the light energy values. countermeasures against teaching errors resulted with transparent labels on sheets the material of the sheets must not be too glossy. nomenclature: 1,000 100 10 object no. 1 2345678910 glossiness 1. white paper 2. brown corrugated cardboard 3. paper gummed tape 4. white glossy paper (individu- al packages for omron sensors) 5. blue mount paper for label 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) 10. metal mirror surface (sus mirror surface) taught difference in glossiness between two teaching points taught difference in light energy between two teaching points discriminating method large large discriminated by glossiness. large small discriminated by glossiness. small large discriminated by light energy. small small discriminated by glossiness. a teaching error will result if the dif- ference in glossiness and that in light energy are both less than the sensing levels of e3x-nl. (example) metal cylindrical obj ect coated with transparent film metal cylindrical object coated with transparent film sensing head the object can be sensed smoothly when the angle of the sensing head is either 0 ? or 45 ? . 45 ? operation indicator (orange) teaching button mode selector stability indicator (green) teaching indicator (red/green) operation mode selector difference in glossiness large discriminated by glossiness fuzzy discrimination of glossiness and light energy discriminated by light energy difference in light energy large small teaching error
a-203 e3x-nl e3x-nl operation sensitivity setting two-point teaching pro ce- dur e setting operation 1 --- locate the sensor head within the sensing distance. 2 move the mode selector to the position. 3 press the teaching button once with a sensing object located under the sensor as shown in the following illustration. 4 with an object absent (ground), press the teaching button (second time). if teaching is ok if teaching is ng 5 move the mode selector to the po- sition. sensitivity setting is complete. 6 light dark select the desired operation format with the operation mode selector (l.on/d.on). teach on run timer off teach teach object base teaching indicator ... lit red the built-in buzzer beeps once. teach object base teaching indicator ... lit red lit green the built-in buzzer beeps once. 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. teach on run timer off run teaching indicator ... lit green extin- guished l.on d.on one-point teaching pro ce- dur e setting operation 1 move the mode selector to the position. 2 press the teaching button with one of the sensing objects or the background object located under the sensor for sensing. 3 move the mode selector to the po- sition. 1-point teaching setting is complete as soon as the first object passes. 4 select the desired operation format with the operation mode selector (l.on/d.on). teach on run timer off teach teaching indicator ... lit red the built-in buzzer beeps once. teach on run timer off run teaching indicator ... lit red lit green l.on d.on
a-204 standard photoelectric sensors precautions fiber units installation tightening force for the fiber unit installation, tighten it to the torque of 0.3 nm max. fiber connection and disconnection e3x-nl amplifier has a push lock. connect or disconnect the fibers to or from e3x-nl amp lifier using the following proce- dures: 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 con- nected. 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.) 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. monting the sensor if two or more sensors are us ed, face-to-face installation of the fiber units or the regularly reflected light from the sensing object may cause mutual interferen ce. 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. 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. selection of teaching point(s) two-point teaching if e3x-nl is used to sense sensi ng objects that are only a little different in glossiness from the background object and the sensing objects have color patterns, the difference in glossi- ness 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 plac e where e3x-nl can sense the sensing objects smoothly while considering the characteris- tics of glossiness versus distance of e3x-nl if the sensing po- sition 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, per- form 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 contro l output for one-point teaching correct use lock button fiber insertion mark lock button locked unlocked sensitivity setting method two-point teaching one-point teaching difference in general, use 2-point teach- ing. the fuzzy teaching func- tion (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 sens- ing of different objects on a single background object or a single type of objects on a variety of glossy back- ground 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 vth selection + 15% - 15% teaching on glossiness off control output (lon) glossiness control output (lon) teach mode run mode vth on upper side vth on lower side vth selection + 15% - 15% teaching on off teach mode run mode vth on upper side vth on lower side
a-205 e3x-nl 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 in stead of the teaching button. miscellaneous eeprom write error if a write error occurs (buzzer beeps, red and green teaching indicators flicker at the same time, operation and stability indi- cators flicker) due to power-off, static electricity or other noise in the teaching mode (until the initial operation level compen- sation completion of teaching without object), perform teach- ing 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 indica tor flickers, unlike the teaching error. pro- ce- dure operation 1 set the mode selector to . 2 the following signal conditions must be given as remote teaching input conditions. a if there is a teaching erro r after performing remote two- point teaching with e3x-nl, try performing remote two- point 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. run brown + v blue 0v black control output orange answer-back output purple remote teaching input pink remote run/teach input t2 * 1.0 to 1.3s 1.0 to 1.3s t1 t1 t2 t1 * * note: t1 must be 20 ms minimum and t2 must be 500 ms minimum at the time of remote teaching. 0.5s 0.5s 0.5s 0.5s 0.5s 0.5s 0.1s 0.1s h l h l h l h l remote run/teach input remote teaching input answer-back output (if teaching is ok.) answer-back output (if teaching is ng.) t2 * 1.0 to 1.3s t1 t1 * 0.5s h l h l h l remote run/teach input remote teaching input answer-back output (remote 1-point teaching) (remote 2-point teaching)
a-206 standard photoelectric sensors dimensions (unit: mm) sensors accessories (order separately) h-5 amplifier units e3x-nl11 two, mounting holes operation indicator stability indicator 24.9 32.2 33 4.1 22.4 16 0.2 59 6.2 22.4 5.4 16 0.2 3.4 13 34.8 3.8 32.5 6.1 three, 2.5 dia. 8 10.7 7 4.15 two, 3.2 dia. mounting holes stainless steel (sus304) 10.8 10 8.3 2-m3 16 0.2 (a) * * mounting brackets can be used on the a side. vinyl-insulated round cable of 4 dia. 6 cores conductor cross-sectional area: 0.3 mm2 ; insulation diameter: 1.04 mm standard length: 2 m mounting holes with mounting blanket attached short-distance, small spot type e32-s15- # 16.5 wo, 3.3 dia. mounting holes optical fiber 6 dia. sleeve window emitter receiver sensing surface (8 x 15.6) 29 9.2 13.2 sensing head 13.2 0.2 2-m3 29 31 13 15 x 15 7 8 10 10.4 500 mm (e32-s15-1) 1 m (e32-s15-2) mounting holes fiber units long-distance type e32-s15l- # 15 x 15 31 13 7 8 window two, 3.3 dia. mounting holes emitter receiver sensing surface (18 x 35) 20.4 20 47 22 sensing head 15.3 21.5 9.5 42 2-m3 22 0.2 optical fiber 6 dia. sleeve 500 mm (e32-s15l-1) 1 m (e32-s15l-2) mounting holes fiber units in the interest of product improvement, specif ications are subject to change without notice. all dimensions shown are in millimeters. to convert millimeters into inches, multiply by 0.03 937. to convert grams into ounces, multiply by 0.03527. cat. no. e248-e2-02-x
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