8 ensors ac-voltage eries elf-contained ac-operated sensors Features Featuring Z-BM technology for reliable sensing without the need for adjustments ompletely epoxy-encapsulated to provide superior durability; designed to meet rigorous P69K standards for use in 2 psi washdowns nnovative dual-indicator system takes the guesswork out of sensor performance monitoring 2 to 25V ac (3-wire hookup); PT solid-state switch output, maximum load 3 m Models P ensing Mode Range LD Output Model* Opposed Retroreflective Polarized Retroreflective Diffuse Fixed-Field 2 m (66') 2 m (79") mm 3 mm (2") 2 (") cutoff (2") cutoff mm cutoff nfrared 95 nm Visible Red 68 nm nfrared 88 nm 83 8W3R 8RW3R 8W3L 8RW3L 8W3LP 8RW3LP 8W3D 8RW3D 8W3DL 8RW3DL 8W3FF25 8RW3FF25 8W3FF5 8RW3FF5 8W3FF 8RW3FF * tandard 2 m (6.5') cable models are listed. 9 m (3') cable: add suffix W/3 (e.g., 83 W/3). 4-pin Micro-style QD models: add suffix Q (e.g., 83Q). model with a QD connector requires a mating cable. (ee page 7.) Use polarized models when shiny objects will be sensed. WR... ot To Be Used for Personnel Protection ever use these products as sensing devices for personnel protection. Doing so could lead to serious injury or death. These sensors do OT include the self-checking redundant circuitry necessary to allow their use in personnel safety applications. sensor failure or malfunction can cause either an energized or de-energized sensor output condition. onsult your current Banner afety Products catalog for safety products which meet OH, and standards for personnel protection. Printed in U /5 P/ 252
8 ensors ac-voltage eries Fixed-Field Mode Overview 8 eries self-contained fixed-field sensors are small, powerful, infrared diffuse mode sensors with far-limit cutoff (a type of background suppression). Their high excess gain and fixed-field technology allow them to detect objects of low reflectivity, while ignoring background surfaces. The cutoff distance is fixed. Backgrounds and background objects must always be placed beyond the cutoff distance. Fixed-Field ensing Theory of Operation The 8FF compares the reflections of its emitted light beam () from an object back to the sensor s two differently aimed detectors, R and R2 (see Figure ). f the near detector (R) light signal is stronger than the far detector (R2) light signal (see object, closer than the cutoff distance), the sensor responds to the object. f the far detector (R2) light signal is stronger than the near detector (R) light signal (see object B, beyond the cutoff distance), the sensor ignores the object. The cutoff distance for model 8FF sensors is fixed at 25, 5 or millimeters (", 2", or 4"). Objects lying beyond the cutoff distance usually are ignored, even if they are highly reflective. However, it is possible to falsely detect a background object, under certain conditions (see Background Reflectivity and Placement). n the drawings and discussion on these pages, the letters, R, and R2 identify how the sensor s three optical elements (mitter, ear Detector R, and Far Detector R2 ) line up across the face of the sensor. The location of these elements defines the sensing axis (see Figure 2). The sensing axis becomes important in certain situations, such as those illustrated in Figures 5 and 6. ear Detector Far Detector mitter Receiver lements R R2 Lenses Object ensing Range Object is sensed if amount of light at R is greater than the amount of light at R2 Figure. Fixed-field concept utoff Distance Object B or Background ensor etup ensing Reliability For highest sensitivity, position the target object for sensing at or near the point of maximum excess gain. The excess gain curves for these products are shown on page 5. Maximum excess gain for the 2 models occurs at a lens-to-object distance of about 7 mm; for models, at about mm; and for the mm models, at about 2 mm. ensing at or near this distance will make maximum use of each sensor s available sensing power. The background must be placed beyond the cutoff distance. (ote that the reflectivity of the background surface also may affect the cutoff distance.) Following these two guidelines will improve sensing reliability. Background Reflectivity and Placement void mirror-like backgrounds that produce specular reflections. False sensor response will occur if a background surface reflects the sensor s light more strongly to the near detector, or sensing detector (R) than to the far detector, or cutoff detector (R2). The result is a false O condition (Figure 3). To cure this problem, use a diffusely reflective (matte) background, or angle either the sensor or the background (in any plane) so the background does not reflect light back to the sensor (see Figure 4). Position the background as far beyond the cutoff distance as possible. n object beyond the cutoff distance, either stationary (and when positioned as shown in Figure 5), or moving past the face of the sensor in a direction perpendicular to the sensing axis, can cause unwanted triggering of the sensor if more light is reflected to the near detector than to the far detector. The problem is easily remedied by rotating the sensor 9 (Figure 6). The object then reflects the R and R2 fields equally, resulting in no false triggering. better solution, if possible, may be to reposition the object or the sensor. s a general rule, the most reliable sensing of an object approaching from the side occurs when the line of approach is parallel to the sensing axis. Figure 2. Fixed-field sensing axis 2 P/ 252 Banner ngineering orp. Minneapolis, M U... www.bannerengineering.com Tel: 763.544.364
8 ensors ac-voltage eries olor ensitivity The effects of object reflectivity on cutoff distance, though small, may be important for some applications. t is expected that at any given cutoff setting, the actual cutoff distance for lower reflectance targets will be slightly shorter than for higher reflectance targets (see Figure-of-Merit information on page 5). This behavior is known as color sensitivity. For example, an excess gain of (see page 5) for an object that reflects / as much light as the 9% white card is represented by the horizontal graph line at excess gain =. n object of this reflectivity results in a far limit cutoff of approximately 2 mm (.8"), for the 2 (") cutoff model for example; thus 2 mm represents the cutoff for this sensor and target. These excess gain curves were generated using a white test card of 9% reflectance. Objects with reflectivity of less than 9% reflect less light back to the sensor, and thus require proportionately more excess gain in order to be sensed with the same reliability as more reflective objects. When sensing an object of very low reflectivity, it may be especially important to sense it at or near the distance of maximum excess gain. Fixed ensing Field utoff Distance Reflective Background ore of mitted Beam trong Direct Reflection to R 8FF R R2 R = ear Detector R2 = Far Detector = mitter ore of mitted Beam trong Direct Reflection way From ensor Figure 3. Reflective background problem Figure 4. Reflective background solution 8FF utoff Distance R R2 R = ear Detector R2 = Far Detector = mitter Fixed ensing Field Reflective Background or Moving Object reflective background object in this position or moving across the sensor face in this axis and direction may cause false sensor response. Figure 5. Object beyond cutoff problem reflective background object in this position or moving across the sensor face in this axis will be ignored. Figure 6. Object beyond cutoff solution Banner ngineering orp. Minneapolis, M U... www.bannerengineering.com Tel: 763.544.364 P/ 252 3
8 ensors ac-voltage eries upply Voltage and urrent upply Protection ircuitry Output onfiguration 2 to 25V ac (5/6 Hz) verage current: 2 m Peak current: 2 m @ 2V ac, 5 m @ 2V ac, 75 m @ 25V ac Protected against transient voltages PT solid-state ac switch; three-wire hookup; light operate or dark operate, depending on model Light Operate: Output conducts when sensor sees its own (or the emitter s) modulated light Dark Operate: Output conducts when the sensor sees dark Output Rating 3 m maximum (continuous) Fixed-Field models: derate 5 m/ above +5 (+22 F) nrush capability: amp for 2 milliseconds, non-repetitive OFF-state leakage current: < microamps O-state saturation voltage: 3V @ 3 m ac; 2V @ 5 m ac Output Protection ircuitry Output Response Time Repeatability ndicators onstruction nvironmental Rating Protected against false pulse on power-up Opposed mode: 6 milliseconds O, 8 milliseconds OFF Other models: 6 milliseconds O and OFF OT: millisecond delay on power-up; outputs do not conduct during this time. Opposed mode: 2 milliseconds Other models: 4 milliseconds Repeatability and response are independent of signal strength. Two LDs (reen and Yellow) reen O steady: power to sensor is O Yellow O steady: sensor sees light Yellow flashing: excess gain marginal ( to.5x) in light condition PBT polyester housing; polycarbonate (opposed-mode) or acrylic lens Leakproof design rated M 6P, D 45 (P69K) onnections 2 m (6.5') attached cable or 4-pin Micro-style quick-disconnect fitting Operating onditions Temperature: -4 to +7 (-4 to +58 F) Maximum relative humidity: 9% at 5 (non-condensing) Vibration and Mechanical hock ertifications pecifications ll models meet Mil. td. 22F requirements. Method 2 (Vibration; frequency to 6 Hz, max., double amplitude.6" acceleration ). Method 23B conditions H& (hock: 75 with unit operating; for non-operation) 4 P/ 252 Banner ngineering orp. Minneapolis, M U... www.bannerengineering.com Tel: 763.544.364
8 ensors ac-voltage eries Performance urves xcess ain Beam Pattern xcess ain Performance based on use of a 9% reflectance white test card. Opposed. m (.33') m (3.3') 8 eries DT Opposed Mode m (33') m (33') mm mm 8 eries Opposed Mode 5 m (6') m (32') 5 m (49') DT 2 m (66') 25 m (82') 6" 4" 2" 2" 4" 6" Fixed-Field 2. mm (.4") mm (.4") 8 eries DT Fixed-field mode with 2 far limit cutoff mm (.4") mm Ø mm spot size @ 8 mm focus Ø mm spot size @ 2 cutoff Using 8% gray test card: utoff distance will be 95% of value shown. Using 6% black test card: utoff distance will be 9% of value shown. Retroreflective. m (.33'). m (.33') 8 eries DT on-polarized Retro m (3.3') m (33') 2 mm 8 mm 4 mm 4 mm 8 mm 2 mm 8 eries on-polarized Retro.5 m (.6'). m (3.2').5 m (4.8') DT 2. m (6.4') 2.5 m (8.') 4.7" 3.2".6".6" 3.2" 4.7" Fixed-Field. mm (.4") mm (.4") 8 eries DT Fixed-field mode with far limit cutoff mm (.4") mm Ø mm spot size @ mm focus Ø mm spot size @ cutoff Using 8% gray test card: utoff distance will be 9% of value shown. Using 6% black test card: utoff distance will be 85% of value shown. Polarized Retro. m (.33'). m (.33') 8 eries DT Polarized Retro m (3.3') m (33') mm mm 8 eries Polarized Retro.5 m (.6'). m (3.2').5 m (4.8') DT 2. m (6.4') 6" 4" 2" 2" 4" 6" 2.5 m (8.') Fixed-Field mm. mm (.4") mm (.4") 8 eries DT Fixed-field mode with mm far limit cutoff mm (.4") mm Ø mm spot size @ 2 mm focus Ø mm spot size @ mm cutoff Using 8% gray test card: utoff distance will be 85% of value shown. Using 6% black test card: utoff distance will be 75% of value shown. Diffuse mm mm (.4") Minimum ain mm (.4") 8 eries DT hort Range Diffuse Mode Maximum ain mm mm mm mm 8 eries hort Range Diffuse 2 (") (2") 7 (3") DT mm 2 (5").6".4".2".2".4".6" Focus and spot sizes are typical. Diffuse 3 mm mm (.4") Maximum ain Minimum ain mm (.4") 8 eries DT Long Range Diffuse Mode mm mm mm mm 8 eries Long Range Diffuse 8 mm (3") 6 mm (6") 24 mm (9") DT 32 mm (2") 4 mm (5") Performance based on use of a model BRT-3 retroreflector (3" diameter). ctual sensing range may be more or less than specified, depending on the efficiency and reflective area of the retroreflector used..6".4".2".2".4".6" Banner ngineering orp. Minneapolis, M U... www.bannerengineering.com Tel: 763.544.364 P/ 252 5
8 ensors ac-voltage eries Yellow LD Output ndicator reen LD Power ndicator abled Models Dimensions Yellow LD Output ndicator reen LD Power ndicator QD Models 85.3 mm* (3.36") 63.2 mm (2.49") 4. mm* (4.") 63.2 mm (2.49") *Polarized retro and fixed-field models = 86.3 mm (3.4") *Polarized retro and fixed-field models = 5. mm (4.4") Hookups abled mitters QD mitters (4-pin Micro-tyle) bn bu 2-25V ac rd/bk rd/wh rd gn 2-25V ac o connection ll Other abled Models ll Other QD Models (4-pin Micro-tyle) bn bu bk Load 2-25V ac rd/bk rd/wh rd Load gn 2-25V ac o onnection 6 P/ 252 Banner ngineering orp. Minneapolis, M U... www.bannerengineering.com Tel: 763.544.364
8 ensors ac-voltage eries Quick-Disconnect (QD) ables tyle Model Length Dimensions Pinout 4-pin Micro-style traight MQ-46 MQ-45 MQ-43 2 m (6.5') 5 m (5') 9 m (3') 44 mm max. (.7") ø (.6") ø /2-2UF-2B Red Wire reen Wire 38 mm max. (.5") Red/White Wire Red/Black Wire 4-pin Micro-style Right-angle MQ-46R MQ-45R MQ-43R 2 m (6.5') 5 m (5') 9 m (3') 38 mm max. (.5") /2-2UF-2B ø (.6") WRRTY: Banner ngineering orp. warrants its products to be free from defects for one year. Banner ngineering orp. will repair or replace, free of charge, any product of its manufacture found to be defective at the time it is returned to the factory during the warranty period. This warranty does not cover damage or liability for the improper application of Banner products. This warranty is in lieu of any other warranty either expressed or implied. P/ 252 Banner ngineering orp., 974 Tenth ve. o., Minneapolis, M U 5544 Phone: 763.544.364 www.bannerengineering.com mail: sensors@bannerengineering.com