T30 Sensors DC-Voltage Series

Transcription

1 T3 ensors D-Voltage eries nstruction Manual elf-ontained, D-Operated ensors Featuring Z-BM technology, the specially designed optics and electronics provide reliable sensing without the need for adjustments T style plastic housing with 3 mm threaded lens in opposed, retroreflective, or fixed-field modes ompletely epoxy-encapsulated to provide superior durability, even in harsh sensing environments, rated to P69K nnovative dual-indicator system takes the guesswork out of sensor performance monitoring dvanced diagnostics to warn of marginal sensing conditions or output overload V dc to 3 V dc; choose PDT (complementary) or outputs (5 m max. ea.) WR: ot To Be Used for Personnel Protection ever use this device as a sensing device for personnel protection. Doing so could lead to serious injury or death. This device does not include the self-checking redundant circuitry necessary to allow its use in personnel safety applications. sensor failure or malfunction can cause either an energized or de-energized sensor output condition. Models ensing Mode Model Output Range LD T36 - T36R 6 m (96.8 ft) nfrared, 95 nm OPPOD T3P6R P T36LP T3P6LP 6 m (9.7 ft) Visible red, 68 nm POLR RTRO T36FF2 T3P6FF2 2 mm (7.9 in) cutoff FD-FLD T36FF4 T3P6FF4 4 mm (5.7 in) cutoff nfrared, 88 nm T36FF6 T3P6FF6 6 mm (23.6 in) cutoff Fixed-Field Mode Overview T3 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 detection of objects of low reflectivity, ile ignoring background surfaces. The cutoff distance is fixed. s and background objects must always be placed beyond the cutoff distance. tandard 2 m (6.5 ft) cable models are listed. 9 m (3 ft) cable: add suffix "W/3" (for example, T36 W/3). 4-pin uro-style QD models: add suffix "Q" (for example, T36Q). model with a QD connector requires a mating cable; see ables on page 7. Original Document 2524 Rev. B 3 December

2 T3 ensors D-Voltage eries Fixed-Field ensing Theory of Operation The T3FF compares the reflections of its emitted light beam () from an object back to the sensor s two differently aimed detectors, R and. ee Figure on page 2. f the near detector's (R) light signal is stronger than the far detector's () light signal (see object in the Figure below, closer than the cutoff distance), the sensor responds to the object. f the far detector's () light signal is stronger than the near detector's (R) light signal (see object B in the Figure below, beyond the cutoff distance), the sensor ignores the object. The cutoff distance for model T3FF sensors is fixed at 2, 4, or 6 millimeters (7.9 in, 6.7 in, or 23.6 in). Objects lying beyond the cutoff distance are usually ignored, even if they are highly reflective. However, under certain conditions, it is possible to falsely detect a background object (see Reflectivity and Placement on page 2). ear Detector Receiver lements R Lenses Object Object B or Far Detector mitter ensing Range R ensing xis Object is sensed if amount of light at R is greater than the amount of light at Figure. Fixed-Field oncept Figure 2. Fixed-Field ensing xis n the drawings and information provided in this document, the letters, R, and identify how the sensor s three optical elements (mitter, ear Detector R, and Far Detector ) line up across the face of the sensor. The location of these elements defines the sensing axis, see Figure 2 on page 2. The sensing axis becomes important in certain situations, such as those illustrated in Figure 5 on page 3 and Figure 6 on page 3. ensor etup ensing Reliability For highest sensitivity, position the target object for sensing at or near the point of maximum excess gain. Maximum excess gain for all models occurs at a lens-to-object distance of about 4 mm (.5 in). ensing at or near this distance makes the 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 guidelines will improve sensing reliability. Reflectivity and Placement void mirror-like backgrounds that produce specular reflections. false sensor response occurs if a background surface reflects the sensor s light more to the near detector (R) than to the far detector (). The result is a false O condition (Figure 3 on page 3). To correct 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 (Figure 4 on page 3). Position the background as far beyond the cutoff distance as possible. n object beyond the cutoff distance, either stationary (and en positioned as shown in Figure 5 on page 3), or moving past the face of the sensor in a direction perpendicular to the sensing axis, may 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 on page 3). The object then reflects the R and fields equally, resulting in no false triggering. better solution, if possible, may be to reposition the object or the sensor Tel: P/ 2524 Rev. B

3 T3 ensors D-Voltage eries R = ear Detector = Far Detector = mitter T3FF Fixed ensing Field T3FF R ore of mitted Beam trong Direct Reflection to R R ore of mitted Beam trong Direct Reflection way From ensor Fixed ensing Field Figure 3. - Problem R = ear Detector = Far Detector = mitter Figure 4. - olution T3FF T3FF R,, R R = ear Detector = Far Detector = mitter Fixed ensing Field or Moving Object = mitter = Far Detector R = ear Detector Fixed ensing Field 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 - Problem reflective background object in this position or moving across the sensor face in this axis will be ignored. Figure 6. Object Beyond - olution 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 is slightly shorter than for higher reflectance targets. This behavior is known as color sensitivity. For example, an excess gain of for an object that reflects / as much light as the 9% ite card is represented by the horizontal graph line at excess gain =. n object of this reflectivity results in a far limit cutoff of approximately 9 mm (7.5 in) for the 2 mm (8 in) cutoff model, for example; 9 mm represents the cutoff for this sensor and target. These excess gain curves were generated using a ite 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. P/ 2524 Rev. B - Tel:

4 T3 ensors D-Voltage eries pecifications upply Voltage and urrent V dc to 3 V dc (% max. ripple); supply current (exclusive of load current): mitters, on-polarized, Retro: 25 m Receivers: 2 m Polarized Retroreflective: 3 m Fixed-Field: 35 m upply Protection ircuitry Protected against reverse polarity and transient voltages Output onfiguration PDT solid-state dc switch; (current sinking) or (current sourcing) outputs, depending on model Light Operate:.O. output conducts en sensor sees its own (or the emitter s) modulated light Dark Operate:.. output conducts en the sensor sees dark; the.. output may be wired as a normally open marginal signal alarm output, depending upon hookup to power supply Output Rating 5 m maximum (each) in standard hookup. When wired for alarm output, the total load may not exceed 5 m. OFF-state leakage current: < µ at 3 V dc O-state saturation voltage: < V at m dc; <.5 V at 5 m dc Required Overcurrent Protection WR: lectrical connections must be made by qualified personnel in accordance with local and national electrical codes and regulations. Overcurrent protection is required to be provided by end product application per the supplied table. Overcurrent protection may be provided with external fusing or via urrent Limiting, lass 2 Power upply. upply wiring leads < 24 W shall not be spliced. For additional product support, go to upply Wiring (W) Required Overcurrent Protection (mps) 2 5. Output Protection ircuitry Protected against false pulse on power-up and continuous overload or short circuit of outputs Output Response Time Opposed mode: 3 ms O,.5 ms OFF Retro, Fixed-Field and Diffuse: 3 ms O and OFF OT: ms delay on power-up; outputs do not conduct during this time. Repeatability Opposed mode: 375 μs Retro, Fixed-Field and Diffuse: 75 μs Repeatability and response are independent of signal strength. ndicators Two LDs (reen and Yellow) reen O steady: power to sensor is O reen flashing: output is overloaded Yellow O steady:.o. output is conducting Yellow flashing: excess gain marginal ( to.5 times) in light condition onstruction PBT polyester housing; polycarbonate (opposed-mode) or acrylic lens nvironmental Rating Leakproof design rated M 6P, D 45 ( P69K) onnections 2 m (6.5 ft) or 9 m (3 ft) attached cable or 4-pin uro-style quickdisconnect fitting Operating onditions Temperature: 4 to 7 ( 4 F to 58 F) Humidity: 9% at 5 maximum relative humidity (noncondensing) Vibration and Mechanical hock ll models meet Mil. td. 22F requirements. Method 2 (Vibration; frequency Hz to 6 Hz, max., double amplitude.6 inch acceleration ). Method 23B conditions H&. (hock: 75 with unit operating; for non-operation) ertifications Tel: P/ 2524 Rev. B

5 T3 ensors D-Voltage eries Performance urves Table : Opposed Mode ensors Beam Pattern xcess ain 75 mm 5 mm 25 mm 25 mm 5 mm 75 mm T3 eries Opposed Mode 5 m (5') 3 m (') 45 m (5') DT 6 m (2') 75 m (25') 3" 2" " " 2" 3". m (.33') m (3.3') DT T3 eries Opposed Mode m (33') m (33') Table 2: Polarized Retro Mode ensors 2 Beam Pattern xcess ain 5 mm mm 5 mm 5 mm mm 5 mm T3 eries Polarized Retro with BRT-3 Reflector.5 m (5') 3. m (') 4.5 m (5') DT 6. m (2') 7.5 m (25') 6" 4" 2" 2" 4" 6". m (.33'). m (.33') T3 eries with BRT-3 Reflector DT Polarized Retro m (3.3') m (33') 2 Performance based on use of a model BRT-3 retroreflector (3-inch diameter). ctual sensing range may be more or less than specified, depending on the efficiency and reflective area of the retroreflector used. P/ 2524 Rev. B - Tel:

6 T3 ensors D-Voltage eries Table 3: Fixed-Field Mode ensor xcess ain 3 Fixed-Field 2 mm Fixed-Field 4 mm Fixed-Field 6 mm mm (.4") mm (.4") T3 eries Fixed-field mode with 2 mm far limit cutoff DT mm (4") mm (4") mm (.4") mm (.4") T3 eries Fixed-field mode with 4 mm far limit cutoff DT mm (4") mm (4") mm (.4") mm (.4") T3 eries Fixed-field mode with 6 mm far limit cutoff DT mm (4") mm (4") Ø 6 mm spot size at 35 mm focus Ø 2 mm spot size at 2 mm cutoff Using 8% gray test card: cutoff distance will be 95% of value shown. Using 6% black test card: cutoff distance will be 9% of value shown. Ø 7 mm spot size at 35 mm focus Ø 25 mm spot size at 4 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. Ø 7 mm spot size at 35 mm focus Ø 3 mm spot size at 6 mm cutoff Using 8% gray test card: cutoff distance will be 85% of value shown. Using 6% black test card: cutoff distance will be 75% of value shown. Dimensions abled Models QD Models Jam ut (upplied) M3 x.5 Thread ø 4. mm (.57") ø 5 mm (.59") 45. mm (.77") 5.5 mm (2.3") reen LD Power ndicator Yellow LD Output ndicator.5 mm (.45") 66.5 mm (2.62") 3 Performance based on use of a 9% reflectance ite test card. Focus and spot sizes are typical Tel: P/ 2524 Rev. B

7 T3 ensors D-Voltage eries Wiring Diagrams abled mitters -3V dc (inking) Outputs tandard Hookup - 3V dc (ourcing) Outputs tandard Hookup - 3V dc QD mitters (inking) Outputs larm Hookup (ourcing) Outputs larm Hookup - 3V dc no connection larm - 3V dc larm - 3V dc OT: abled hookups are shown. QD hookups are functionally identical. ables ll measurements are listed in millimeters (inches), unless noted otherwise. 4-Pin Threaded M2/uro-tyle ordsets Model Length tyle Dimensions Pinout (Female) MQD-46 MQD m (6 ft) 4.57 m (5 ft) 44 Typ. MQD-43 MQD-45 MQD-46R MQD-45R 9.4 m (3 ft) 5.2 m (5 ft).83 m (6 ft) 4.57 m (5 ft) traight 32 Typ. [.26"] M2 x ø MQD-43R 9.4 m (3 ft) Right-ngle 3 Typ. [.8"] = Brown 2 = White 3 = Blue 4 = Black MQD-45R 5.2 m (5 ft) M2 x ø 4.5 [.57"] 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 ich, 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, ase, 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. - Tel: