M12 Series Metal Barrel Sensors

Transcription

1 eries Metal Barrel ensors Rugged, self-contained sensors in a 2 mm threaded barrel Features omplete family of sensors, all housed in a compact 2 mm threaded metal barrel Opposed, retroreflective, polarized retroreflective, diffuse and 25, 5, or 75 mm cutoff fixed-field mode operation, depending on model xcellent background suppression on fixed-field models; an excellent alternative to proximity sensors Two ignal indicator LDs for easy operating status monitoring from any direction to 3V dc operation omplementary solid-state outputs ( normally open, normally closed); (sourcing) or (sinking), depending on model Models Opposed ensing Mode Model* Range Output 66 nm Visible Red ffective Beam: mm (.39") OPPOD PR R 5 m (6.4') / ensing Mode Model* Range Output Performance based on use of 9% reflectance white test card. 68 nm Visible Red PFF25 25 mm (") cutoff; 25 mm (") FF25 focus Polarized Retro 66 nm Visible Red P POLR RTRO PLP LP.5 m (4.9') Fixed-Field FD-FLD PFF5 5 mm (2") cutoff; 25 mm (") FF5 focus Retro 66 nm Visible Red RTRO PLV LV 2.5 m (8.2') PFF75 75 mm (3") cutoff; 25 mm (") FF75 focus Diffuse Performance based on use of 9% reflectance white test card. 66 nm Visible Red DFFU PD D 4 mm (5.7") * Only standard 2 m (6.5') cable models are listed. For 9 m (3') cable, add suffix W/3 to the model number (e.g., W/3). QD models: 4-pin integral uro-style connector: add suffix Q8 (e.g., Q8). 4-pin 5 mm (6") uro-style pigtail: add suffix Q5 (e.g., Q5). Retroreflective range is specified using one model BRT-84 retroreflector. ctual sensing range may be more or less than specified, depending upon efficiency and reflective area of the retroreflector(s) used. 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 3/9 P/ 2972 rev.

2 eries Metal Barrel ensors Overview Banner s family of sensors offers a full complement of sensing modes, all packaged in a compact yet rugged metal housing. Their popular 2-mm threaded barrel design allows them to mount easily into tight spaces, with the excellent performance expected of much larger sensors. The single-turn ain potentiometer on most models and two ignal LDs (positioned on either side of the housing for visibility) provide easy alignment and configuration for reliable sensing (see Figure ). ote that when the signal LD is not O, the green Power LD is visible through all three LD ports. ignal LD (one of two) ingle-turn ain Potentiometer Power LD Fixed-Field Mode Overview eries fixed-field sensors are powerful 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 that are directly in front of another surface, while ignoring the surface in the background. The cutoff distance is fixed. s and background objects must always be placed beyond the cutoff distance. Fixed-Field ensing Theory of Operation n operation, the FF 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 2). 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, object beyond the cutoff distance), the sensor ignores the object. The cutoff distance for model FF sensors is fixed at 25, 5, or 75 mm (", 2", or 3"). Objects lying beyond the cutoff distance are ignored, even if they are highly reflective. However, it is possible to falsely detect a background object, under certain conditions (see 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 3). The sensing axis becomes important in certain situations, such as those illustrated in Figures 6 and 7. reen O teady reen Flashing Yellow O teady Yellow Flashing Figure. Features ear Detector Far Detector mitter Receiver lements R R2 Lenses Object Power O Output overloaded Light sensed Marginal excess gain ensing Range Object is sensed if amount of light at R is greater than the amount of light at R2 Figure 2. Fixed-field concept utoff Object B or Fixed-Field ensor etup ensing Reliability For best sensing reliability, the sensor-to-object distance should be positioned to maximize excess gain. The excess gain curves for these sensors are shown on page 5. ensing at higher excess gains will make maximum use of the sensor s available sensing power. The background must be placed beyond the cutoff distance; more reflective backgrounds must be placed further back. Following these two guidelines will improve sensing reliability. ensing xis 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 3. Fixed-field sensing axis R R2 2 P/ 2972 rev. Banner ngineering orp. Minneapolis, M U.. Tel:

3 eries Metal Barrel ensors 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 4). Use of a diffusely-reflective (matte) background will cure this problem. Other possible solutions are to angle the sensor or angle the background (in any plane) so the background does not reflect light back to the sensor (see Figure 5). 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 6), or if it moves past the face of the sensor in a direction perpendicular to the sensing axis, can cause unwanted triggering of the sensor if it reflects more light to the near detector than to the far detector. The problem is easily remedied by rotating the sensor 9 (Figure 7). 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. 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. This behavior is known as color sensitivity. The excess gain curves on page 5 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. = mitter R2 = Far Detector R = ear Detector..FF.. R2 R utoff ore of mitted Beam trong Direct Reflection to R Fixed ensing Field Figure 4. Reflective background problem..ff.. R2 R = mitter R2 = Far Detector R = ear Detector Fixed ensing Field ore of mitted Beam utoff trong Direct Reflection way From ensor Reflective Reflective utoff utoff Figure 5. Reflective background solution..ff.. R2 R 2..FF.., R2, R = mitter R2 = Far Detector R = ear Detector Fixed ensing Field Reflective 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 6. Object beyond cutoff problem = mitter R2 = Far Detector R = ear Detector Fixed ensing Field Reflective or Moving Object reflective background object in this position or moving across the sensor face in this axis will be ignored. Figure 7. Object beyond cutoff solution Banner ngineering orp. Minneapolis, M U.. Tel: P/ 2972 rev. 3

4 eries Metal Barrel ensors ensing Beam upply Voltage and urrent upply Protection ircuitry Output onfiguration Output Ratings Output Protection ircuitry Output Response Time Repeatability Fixed-Field Models: 68 nm visible red ll Other Models: 66 nm visible red to 3V dc (% max. 2 m max current, exclusive of load Protected against reverse polarity and transient voltages omplementary ( normally open and normally closed) solid-state, or, depending on model m total across both outputs with overload and short circuit protection OFF-state leakage current: : less than 2 3V dc (see pplication ote ) : less than 3V dc Protected against false pulse on power-up, short-circuit protected Opposed Mode: 625 microseconds O/375 microseconds OFF ll Other Modes: 5 µs O and OFF OT: ms delay on power-up; outputs do not conduct during this time. Opposed Mode: 85 microseconds ll Other Modes: 95 microseconds ndicators Two tatus (yellow) and one Power (green) LD (see Figure ) djustments onstruction Fixed-Field Models: one ll Other Models: ingle-turn ain (sensitivity) potentiometer Housing: ickel-plated brass Lenses: PMM able ndcap and ain Potentiometer djuster: PBT nvironmental Rating P67; M 6, P68 and 2 P Washdown, M 5 nnex F-22 onnections 2 m (6.5') or 9 m (3') 4-wire PV-jacketed cable, 4-pin integral uro-style QD fitting, or 4-pin 5 mm (6") uro-style pigtail, depending on model Operating onditions Operating temperature: 2 to +6 ( 4 to +4 F) Relative humidity: 9% +5 (+22 F) non-condensing pplication otes ertifications pecifications O-state saturation voltage: : less m : less than m. off-state leakage current is < 2 μ for load resistances > 3 kω or optically isolated loads. For load current of m, leakage is < % of load current 4 P/ 2972 rev. Banner ngineering orp. Minneapolis, M U.. Tel:

5 eries Metal Barrel ensors Performance urves xcess ain Beam Pattern xcess ain Opposed. m (.3') Opposed. m. m. m (.3') (3.') (3.') DT Beam Width 6 mm 4 mm 2 mm -2 mm -4 mm -6 mm Opposed m (3.3') 2 m (6.6') 3 m (9.8') DT 4 m (3') 5 m (6') (24") (6") (8") (8") (6") (24") Fixed-Field 25 mm Performance based on use of 9% reflectance white test card. mm (.4") mm (.4") DT Fixed Field - 25 mm mm (4.") mm (4.") Ø 2 mm spot 25 mm focus Ø 2 mm spot 25 mm cutoff Using 8% gray test card: cutoff distance will be 96% of value shown. Using 6% black test card: cutoff distance will be 94% of value shown. Polarized Retro. m (.3'). m (.3') DT Polarized Retro m (3.3') m (33') Beam Width 4 mm 3 mm 2 mm mm - mm -2 mm -3 mm -3 mm (.6") (.2") (.8") (.4") Polarized Retro.4 m (.3').8 m (2.6').2 m (3.9') DT.6 m (5.2') 2. m (6.5') (.4") (.8") (.2") (.6") Fixed-Field 5 mm mm (.4") mm (.4") DT Fixed Field - 5 mm mm (4.") mm (4.") Ø 2 mm spot 25 mm focus Ø 7 mm spot 5 mm cutoff Using 8% gray test card: cutoff distance will be 9% of value shown. Using 6% black test card: cutoff distance will be 85% of value shown. Retro. m (.3'). m (.3') DT Retroreflective m (3.3') m (33') Beam Width 8 mm 6 mm 4 mm 2 mm -2 mm -4 mm -6 mm -8 mm (3.") (2.4") (.6") (.8") Retroreflective.5 m (.6') m (3.3').5 m (4.9') DT 2 m (6.6') 2.5 m (8.2') (.8") (.6") (2.4") (3.") Fixed-Field 75 mm mm (.4") mm (.4") DT Fixed Field - 75 mm mm (4.") mm (4.") Ø 2 mm spot 25 mm focus Ø 3 mm spot 75 mm cutoff Using 8% gray test card: cutoff distance will be 8% of value shown. Using 6% black test card: cutoff distance will be 7% of value shown. Performance based on use of 9% reflectance white test card. Focus and spot sizes are typical. Diffuse mm (.4") mm (.4") DT Diffuse mm (4.") mm (4.") Beam Width 5 mm mm 5 mm -5 mm - mm -5 mm Diffuse mm (4") 2 mm (8") 3 mm (2") DT 4 mm (6") 5 mm (2") (.6") (.4") (.2") (.2") (.4") (.6") Performance based on use of a model BRT-84 retroreflector. Banner ngineering orp. Minneapolis, M U.. Tel: P/ 2972 rev. 5

6 eries Metal Barrel ensors Dimensions QD Models abled Models Ø 2. mm (.47") 34.8 mm (.37") 43.3 mm (.7") 74. mm (2.9") 67.5 mm (2.66") dc mb-emitter w/cable.eps mitter Hookups (urrent inking) Models (urrent ourcing) Models bn bu + -3V dc bn () bu (3) bk (4) wh (2) Load Load + -3V dc - bn () bu (3) bk (4) wh (2) Load Load + -3V dc abled models are shown; QD hookups are functionally identical. (mitters have no connection to bk and wh.) 6 P/ 2972 rev. Banner ngineering orp. Minneapolis, M U.. Tel:

7 eries Metal Barrel ensors Quick-Disconnect (QD) ables tyle Model Length Dimensions Pinout 4-pin uro-style straight MQD-46 MQD-45 MQD-43 2 m (6.5') 5 m (5') 9 m (3') 44 mm max. (.7") ø 5 mm (.6") x Brown Wire White Wire 38 mm max. (.5") Black Wire Blue Wire 4-pin uro-style right-angle MQD-46R MQD-45R MQD-43R 2 m (6.5') 5 m (5') 9 m (3') 38 mm max. (.5") x ø 5 mm (.6") Mounting Brackets MBQ2PD Right-angle, barrel-mount bracket 6-ga. 3 series stainless steel Banner ngineering orp. Minneapolis, M U.. Tel: P/ 2972 rev. 7

8 eries Metal Barrel ensors Banner ngineering orp Limited Warranty Banner ngineering orp. warrants its products to be free from defects in material and workmanship for one year following the date of shipment. Banner ngineering orp. will repair or replace, free of charge, any product of its manufacture which, at the time it is returned to the factory, is found to have been defective during the warranty period. This warranty does not cover damage or liability for misuse, abuse, or the improper application or installation of the Banner product. TH LMTD WRRTY LUV D LU OF LL OTHR WRRT WHTHR PR OR MPLD (LUD, WTHOUT LMTTO, Y WRRTY OF MRHTBLTY OR FT FOR PRTULR PURPO), D WHTHR R UDR OUR OF PRFORM, OUR OF DL OR TRD U. This Warranty is exclusive and limited to repair or, at the discretion of Banner ngineering orp., replacement. O VT HLL BR R ORP. B LBL TO BUYR OR Y OTHR PRO OR TTY FOR Y TR OT, P, LO, LO OF PROFT, OR Y DTL, OQUTL OR PL DM RULT FROM Y PRODUT DFT OR FROM TH U OR BLTY TO U TH PRODUT, WHTHR R OTRT OR WRRTY, TTUT, TORT, TRT LBLTY, L, OR OTHRW. Banner ngineering orp. reserves the right to change, modify or improve the design of the product without assuming any obligations or liabilities relating to any product previously manufactured by Banner ngineering orp. P/ 2972 rev. Banner ngineering orp., 974 Tenth ve. o., Minneapolis, M U 5544 Phone: mail: sensors@bannerengineering.com