S18 Sensors - ac-Voltage Series Self-contained ac-operated sensors Features * F eaturing EZ-BEAM(R) technology for reliable sensing without the need for adjustments *Completely epoxy-encapsulated to provide superior durability; designed to meet rigorous IP69K standards for use in 1200 psi washdowns *Innovative dual-indicator system takes the guesswork out of sensor performance monitoring *20 to 250V ac (3-wire hookup); SPST solid-state switch output, maximum load 300 mA Models Sensing Mode Range LED Output - Opposed 20 m (66') Infrared 950 nm Retroreflective P Polarized Retroreflective 2 m (79") Visible Red 680 nm 100 mm (4") Diffuse 300 mm (12") 25 mm (1") cutoff Fixed-Field 50 mm (2") cutoff 100 mm (4") cutoff Infrared 880 nm Model* S183E LO S18AW3R DO S18RW3R LO S18AW3L DO S18RW3L LO S18AW3LP DO S18RW3LP LO S18AW3D DO S18RW3D LO S18AW3DL DO S18RW3DL LO S18AW3FF25 DO S18RW3FF25 LO S18AW3FF50 DO S18RW3FF50 LO S18AW3FF100 DO S18RW3FF100 * Standard 2 m (6.5') cable models are listed. * 9 m (30') cable: add suffix "W/30" (e.g., S183E W/30). * 4-pin Micro-style QD models: add suffix "Q1" (e.g., S183EQ1). A model with a QD connector requires a mating cable. (See page 7.) Use polarized models when shiny objects will be sensed. WARNING . . . Not To Be Used for Personnel Protection Never use these products as sensing devices for personnel protection. Doing so could lead to serious injury or death. These sensors do NOT include the self-checking redundant circuitry necessary to allow their use in personnel safety applications. A sensor failure or malfunction can cause either an energized or de-energized sensor output condition. Consult your current Banner Safety Products catalog for safety products which meet OSHA, ANSI and IEC standards for personnel protection. Printed in USA 01/05 P/N 121521 S18 Sensors - ac-Voltage Series Fixed-Field Mode Overview S18 Series 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 Sensing - Theory of Operation The S18FF compares the reflections of its emitted light beam (E) from an object back to the sensor's two differently aimed detectors, R1 and R2 (see Figure 1). If the near detector (R1) light signal is stronger than the far detector (R2) light signal (see object A, closer than the cutoff distance), the sensor responds to the object. If the far detector (R2) light signal is stronger than the near detector (R1) light signal (see object B, beyond the cutoff distance), the sensor ignores the object. The cutoff distance for model S18FF sensors is fixed at 25, 50 or 100 millimeters (1", 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). In the drawings and discussion on these pages, the letters E, R1, and R2 identify how the sensor's three optical elements (Emitter "E", Near Detector "R1", 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. Receiver Elements Near R1 Detector Cutoff Distance Object B or Background Object A Lenses Far R2 Detector Emitter E Sensing Range Object is sensed if amount of light at R1 is greater than the amount of light at R2 Figure 1. Fixed-field concept Sensor Setup Sensing 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 25 mm models occurs at a lens-to-object distance of about 7 mm; for 50 mm models, at about 10 mm; and for the 100 mm models, at about 20 mm. Sensing 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. (Note 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 Avoid 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 (R1) than to the far detector, or "cutoff" detector (R2). The result is a false ON 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. An 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 90 (Figure 6). The object then reflects the R1 and R2 fields equally, resulting in no false triggering. A better solution, if possible, may be to reposition the object or the sensor. P/N 121521 2 2 3ENSING !XIS % As 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 Banner Engineering Corp. * Minneapolis, MN U.S.A. www.bannerengineering.com * Tel: 763.544.3164 S18 Sensors - ac-Voltage Series Color Sensitivity The effects of object reflectivity on cutoff distance, though small, may be important for some applications. It 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 1 (see page 5) for an object that reflects 1/10 as much light as the 90% white card is represented by the horizontal graph line at excess gain = 10. An object of this reflectivity results in a far limit cutoff of approximately 20 mm (0.08"), for the 25 mm (1") cutoff model for example; thus 20 mm represents the cutoff for this sensor and target. These excess gain curves were generated using a white test card of 90% reflectance. Objects with reflectivity of less than 90% 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 Sensing Field 2EFLECTIVE "ACKGROUND 3&& 2 2 % Cutoff Distance #UTOFF $ISTANCE 2 .EAR $ETECTOR 2 &AR $ETECTOR % %MITTER S18FF R1 R2 E Core of Emitted Beam R1 = Near Detector R2 = Far Detector E = Emitter &IXED 3ENSING &IELD Figure 3. Reflective background - problem Cutoff Distance S18FF Strong Direct Reflection Away From Sensor Figure 4. Reflective background - solution #UTOFF $ISTANCE 3&& R1 R2 E % 2 2 &IXED 3ENSING &IELD Fixed Sensing Field R1 = Near Detector R2 = Far Detector E = Emitter Reflective Background Reflective Background or Moving Object % %MITTER 2 .EAR $ETECTOR 2 &AR $ETECTOR 2EFLECTIVE "ACKGROUND OR -OVING /BJECT A reflective background object in this position or moving across the sensor face in this axis and direction may cause false sensor response. A reflective background object in this position or moving across the sensor face in this axis will be ignored. Figure 5. Object beyond cutoff - problem Figure 6. Object beyond cutoff - solution Banner Engineering Corp. * Minneapolis, MN U.S.A. www.bannerengineering.com * Tel: 763.544.3164 P/N 121521 S18 Sensors - ac-Voltage Series Specifications Supply Voltage and Current 20 to 250V ac (50/60 Hz) Average current: 20 mA Peak current: 200 mA @ 20V ac, 500 mA @ 120V ac, 750 mA @ 250V ac Supply Protection Circuitry Protected against transient voltages Output Configuration SPST 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 300 mA maximum (continuous) Fixed-Field models: derate 5 mA/C above +50 C (+122 F) Inrush capability: 1 amp for 20 milliseconds, non-repetitive OFF-state leakage current: < 100 microamps ON-state saturation voltage: 3V @ 300 mA ac; 2V @ 15 mA ac Output Protection Circuitry Protected against false pulse on power-up Output Response Time Opposed mode: 16 milliseconds ON, 8 milliseconds OFF Other models: 16 milliseconds ON and OFF NOTE: 100 millisecond delay on power-up; outputs do not conduct during this time. Repeatability Opposed mode: 2 milliseconds Other models: 4 milliseconds Repeatability and response are independent of signal strength. Indicators Two LEDs (Green and Yellow) Green ON steady: power to sensor is ON Yellow ON steady: sensor sees light Yellow flashing: excess gain marginal (1 to 1.5x) in light condition Construction PBT polyester housing; polycarbonate (opposed-mode) or acrylic lens Environmental Rating Leakproof design rated NEMA 6P, DIN 40050 (IP69K) Connections 2 m (6.5') attached cable or 4-pin Micro-style quick-disconnect fitting Operating Conditions Temperature: -40 to +70 C (-40 to +158 F) Maximum relative humidity: 90% at 50 C (non-condensing) Vibration and Mechanical Shock All models meet Mil. Std. 202F requirements. Method 201A (Vibration; frequency 10 to 60 Hz, max., double amplitude 0.06" acceleration 10G). Method 213B conditions H&I (Shock: 75G with unit operating; 100G for non-operation) Certifications P/N 121521 Banner Engineering Corp. * Minneapolis, MN U.S.A. www.bannerengineering.com * Tel: 763.544.3164 S18 Sensors - ac-Voltage Series Performance Curves Excess Gain 20" 1000 mm 40" E X C E S S 1m (3.3') 10 m (33') 10 80 mm with BRT-3 Reflector 1.6" 80 mm 3.2" 120 mm 4.7" 1.0 m (3.2') 1.5 m (4.8') 2.0 m (6.4') 2.5 m (8.0') S18 Series 6" Polarized Retro 100 mm 4" 50 mm with BRT-3 Reflector 10 1 0.01 m (0.033') 2" 1m (3.3') 50 mm 2" 100 mm 4" 150 mm 6" 10 m (33') DISTANCE S18 Series 0.5 m (1.6') 1.0 m (3.2') 1.5 m (4.8') S18 Series Fixed-field mode with 25 mm far limit cutoff 100 Using G A I N 18% gray test card: Cutoff distance will be 95% of value shown. Using 6% black test card: Cutoff distance will be 90% of value shown. 10 1 0.1 mm (0.004") 1 mm (0.04") G A I N Fixed-field mode with 50 mm far limit cutoff 18% gray test card: Cutoff distance will be 90% of value shown. Using 6% black test card: Cutoff distance will be 85% of value shown. 1 mm (0.04") 10 mm (0.4") 100 mm (4") DISTANCE S18 Series Fixed-field mode with 100 mm far limit cutoff 100 O 10 mm spot size @ 20 mm focus O 10 mm spot size @ 100 mm cutoff Using 18% gray test card: Cutoff distance will be 85% of value shown. Using 6% black test card: Cutoff distance will be 75% of value shown. 10 1 0.1 mm (0.004") O 10 mm spot size @ 10 mm focus O 10 mm spot size @ 50 mm cutoff Using 10 1000 G A I N 100 mm (4") S18 Series 100 1 0.1 mm (0.004") E X C E S S 10 mm (0.4") DISTANCE 1 mm (0.04") 10 mm (0.4") DISTANCE 100 mm (4") 0.6" 0.4" 5 mm 0.2" 0 10 2.5 m (8.0') E X C E S S O 10 mm spot size @ 8 mm focus O 10 mm spot size @ 25 mm cutoff Focus and spot sizes are typical. S18 Series Short Range Diffuse 10 mm Maximum Gain 2.0 m (6.4') DISTANCE 15 mm Short Range Diffuse Mode 100 0 with BRT-3 Reflector 0 0.1 m (0.33') 1000 G A I N 0.5 m (1.6') DISTANCE 0 E X C E S S 0 40 mm S18 Series Polarized Retro 3.2" 1.6" 10 m (33') DISTANCE 4.7" 40 mm 150 mm G A I N 25 m (82') S18 Series 0 1m (3.3') 100 20 m (66') Non-Polarized Retro 0 with BRT-3 Reflector E X C E S S 15 m (49') DISTANCE 120 mm Non-Polarized Retro 0.1 m (0.33') 10 m (32') E X C E S S 1000 S18 Series 1 0.01 m (0.033') 5m (16') 100 m (330') DISTANCE 100 G A I N 60" 0 Fixed-Field - 25 mm 0 500 mm Fixed-Field - 50 mm Retroreflective Polarized Retro 20" 1500 mm 1000 Diffuse - 100 mm 40" 500 mm 10 1000 0 5 mm 0.2" 10 mm 0.4" 15 mm 0.6" Minimum Gain 1 1 mm (0.04") 0 10 mm (0.4") 100 mm (4") DISTANCE 1000 Diffuse - 300 mm 60" Opposed Mode 1000 mm Opposed Mode 1 0.1 m (0.33') G A I N S18 Series 1500 mm 0 G A I N E X C E S S 1000 S18 Series 100 Performance based on use of a 90% reflectance white test card. Fixed-Field - 100 mm Opposed 1000 E X C E S S Excess Gain Beam Pattern 1000 mm (40") 75 mm 100 mm 125 mm (3") (4") (5") S18 Series S18 Series Maximum Gain 50 mm (2") DISTANCE Long Range Diffuse 15 mm 100 25 mm (1") Long Range Diffuse Mode 0.4" 5 mm 0.2" 0 10 1 1 mm (0.04") 0 5 mm 0.2" 10 mm 0.4" 15 mm Minimum Gain 0.6" 0 10 mm (0.4") 100 mm (4") DISTANCE 1000 mm (40") 0.6" 10 mm 80 mm 160 mm 240 mm 320 mm 400 mm (15") (3") (6") (9") (12") DISTANCE Performance based on use of a model BRT-3 retroreflector (3" diameter). Actual sensing range may be more or less than specified, depending on the efficiency and reflective area of the retroreflector used. Banner Engineering Corp. * Minneapolis, MN U.S.A. www.bannerengineering.com * Tel: 763.544.3164 P/N 121521 S18 Sensors - ac-Voltage Series Dimensions QD Models Cabled Models Yellow LED Output Indicator Yellow LED Output Indicator Green LED Power Indicator Green LED Power Indicator 85.3 mm* (3.36") 63.2 mm (2.49") 104.1 mm* (4.10") *Polarized retro and fixed-field models = 86.3 mm (3.40") 63.2 mm (2.49") *Polarized retro and fixed-field models = 105.1 mm (4.14") Hookups Cabled Emitters QD Emitters (4-pin Micro-Style) rd/bk 20-250V ac rd/wh bn 20-250V ac bu rd No connection gn All Other Cabled Models rd/bk bn 20-250V ac bu bk P/N 121521 All Other QD Models (4-pin Micro-Style) Load rd/wh rd gn 20-250V ac Load No Connection Banner Engineering Corp. * Minneapolis, MN U.S.A. www.bannerengineering.com * Tel: 763.544.3164 S18 Sensors - ac-Voltage Series Quick-Disconnect (QD) Cables Style 4-pin Micro-style Straight Model MQAC-406 MQAC-415 MQAC-430 Length 2 m (6.5') 5 m (15') 9 m (30') Dimensions Pinout o15 mm (0.6") 44 mm max. (1.7") o 1/2-20UNF-2B 38 mm max. (1.5") 4-pin Micro-style Right-angle MQAC-406RA MQAC-415RA MQAC-430RA 2 m (6.5') 5 m (15') 9 m (30') Green Wire Red Wire Red/White Wire Red/Black Wire 38 mm max. (1.5") 1/2-20UNF-2B o 15 mm (0.6") WARRANTY: Banner Engineering Corp. warrants its products to be free from defects for one year. Banner Engineering Corp. 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/N 121521 Banner Engineering Corp., 9714 Tenth Ave. No., Minneapolis, MN USA 55441 * Phone: 763.544.3164 * www.bannerengineering.com * Email: sensors@bannerengineering.com