L-GAGE LT3 Long-Range Time-of-Flight Laser Sensor

Transcription

1 L-GAGE L3 Long-Range ime-of-flight Laser Sensor Datasheet Self-Contained Class Laser Distance Sensor with Analog and Discrete Outputs Extremely long range: m with white targets or 3 m with gray targets Banner s unique scalable analog output automatically distributes the output signal over the width of the programmed sensing window Analog and discrete (switched) outputs in each sensor, with independent window limits Discrete output can be used for precise background suppression Choose NPN or PNP discrete output, plus 0 to 0 V dc or to 0 ma sourcing analog output Fast, easy-to-use integrated push button EACH-mode programming; no potentiometer adjustments Remote EACH-function for security and convenience Output response is programmable for three speeds Choose m or 9 m unterminated cable, or 8-pin Euro-style swivel quickdisconnect connector Rugged construction withstands demanding sensing environments; IEC IP67, NEMA 6 WARNING: Not o Be Used for Personnel Protection Never use this device as a sensing device for personnel protection. Doing so could lead to serious injury or death. his device does not include the self-checking redundant circuitry necessary to allow its use in personnel safety applications. A sensor failure or malfunction can cause either an energized or de-energized sensor output condition. CAUION: Do Not Disassemble for Repair his device contains no user-serviceable components. Do not attempt to disassemble for repair. Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. A defective unit must be returned to the manufacturer. Models Models Sensing Distance Cable Discrete Output Analog Output L3PU L3PUQ L3NU L3NUQ L3PI L3PIQ L3NI L3NIQ 300 mm to m (.8 in to 6. ft) with a 90% reflectivity white card m (6. ft) 8-wire 8-pin Euro-style QD m (6. ft) 8-wire 8-pin Euro-style QD m (6. ft) 8-wire 8-pin Euro-style QD m (6. ft) 8-wire 8-pin Euro-style QD PNP (Sourcing) NPN (Sinking) PNP (Sourcing) NPN (Sinking) Analog Voltage (0 V dc to 0 V dc) Analog Current ( ma to 0 ma) See Banner website for information on diffuse and dual-discrete models at o order the 9 m cable models, add the suffix W/30 to the model number of a cabled sensor. For example, L3PU W/30. A model with a QD-connector requires a mating cable. Original Document 67 Rev. E 0 January 07 67

2 heory of Operation A short electrical pulse drives a semiconductor laser diode to emit a pulse of light. he emitted light is collimated through a lens, which produces a very narrow laser beam. he laser beam bounces off the target, scattering some of its light through the sensor s receiving lens to a photodiode, which creates an electrical pulse. he time interval between the two electrical pulses (transmitting and receiving the beam) is used to calculate the distance to the target, using the speed of light as a constant. Multiple pulses are evaluated by the sensor s microprocessor, which calculates the appropriate output value. he analog output provides a variable signal ( ma to 0 ma or 0 V dc to 0 V dc, depending on model) that is proportional to the target s position within the user-programmed analog window limits. he discrete (switched) output energizes whenever the target is located between the user-programmed discrete window limits. Window limits for the analog and discrete outputs may be the same, or they may be programmed independently. User Interface Microprocessor ime-of-flight Engine Emitter Circuitry Analog Signal Processing Laser Emitter E R Receiver Element Lenses arget Output Circuitry Figure. heory of Operation Class Laser Safety Notes LASER LIGH DO NO SARE INO BEAM CLASS LASER PRODUC Avoid exposure - laser light emitted from this aperture RADIAN POWER 0. mw nm COMPLIES WIH CFR PAR 00.0 AND EN608-:99 Low-power lasers are, by definition, incapable of causing eye injury within the duration of a blink (aversion response) of 0. seconds. hey also must emit only visible wavelengths (00 to 700 nm). herefore, an ocular hazard may exist only if individuals overcome their natural aversion to bright light and stare directly into the laser beam. hese lasers are required to have a hazard label and to have an indicator light to indicate that laser emission is occurring. When operating a Class laser: Do not stare at the laser. Do not point the laser at a person s eye. Mount open laser beam paths either above or below eye level, where practical. erminate the beam emitted by the laser product at the end of its useful path. Configuration Instructions Sensor Power-Up and Laser-Enable Power up the sensor for 30 minutes to allow the sensor s internal temperature to stabilize before operating or attempting to program the sensor. If the sensor is used in applications where the temperature is several degrees higher or lower than the ambient temperature, allow the sensor to stabilize in that condition before programming the window limits. he range decreases when the sensor warms up. he Laser-Enable feature allows the sensor to be continually powered and enabled only when being used. his eliminates the need for the extended warm-up period between uses. he sensor s red Signal LED indicates the condition of the received signal from the object being measured. When programming the window limits, this LED must be on (not flashing) for the sensor to accept the setting. o ensure the received signal will not be marginal during operation, move the target object 300 mm beyond the furthest desired switch point during setup and verify the signal LED is still on. - el: P/N 67 Rev. E

3 Indicators Signal LED SIGNAL OUPU Output LED Response Speed Indicators FAS MED SLOW SPEED Response Speed Analog each LED Analog Output Programming A EACH D POWER Discrete each LED Discrete (switched) Output Programming Power ON/OFF LED Power ON/OFF LED (green) Indicates the operating status of the sensor. Power ON/OFF LED Status Off Flashing at Hz Flashing at Hz On Indicates Power is off Discrete output is overloaded (Run mode) Power is on; laser is disabled Power is on; the sensor is operating normally and the laser is enabled Power-Up/Laser-Enable Indicators When powering up the sensor all LEDs turn on for one second. Allow a 0.6-second delay for Laser-Enable. Selected Response Speed Laser-Enable ime Laser-Disable ime Slow 0 ms 0 ms Medium Fast 60 ms ms Output LED (amber) Lights when a target is sensed within the programmed discrete window. Response Speed (amber) Indicates the response speed setting. Signal LED (red) Indicates the strength and condition of the sensor s incoming signal. Signal LED Status On Off Flashing Indicates Good signal No signal is received or the target is beyond the range limitations of the sensor (with some tolerance beyond the recommended minimum and maximum sensing distance) Marginal signal strength (cannot teach limits) Response Speed Before setting window limits, use the sensor s speed button to toggle between the three response speed settings. he selected speed will be indicated by one of the three response speed indicator LEDs. Discrete Output Response Speed Analog Output Frequency Response (-3dB) Slow 00 ms ON and OFF. Hz (00 ms average/ ms update rate) Medium 0 ms ON and OFF Hz (0 ms average/ ms update rate) Fast ms ON and OFF 0 Hz ( ms average/ ms update rate) Programming Remote Programming o program the sensor remotely or to disable the keypad, use the Remote Programming function. Disabling the keypad prevents accidental or unauthorized adjustment of the programming settings. Connect the yellow wire of the sensor to V dc to V dc, with a remote programming switch connected between them. P/N 67 Rev. E - el:

4 Note: he impedance of the remote teach input is kω. Programming is accomplished by following the sequence of input pulses. he duration of each pulse (corresponding to a push button click ) and the period between multiple pulses are defined as : 0.0 seconds 0.8 seconds. Analog Output Slope he L-GAGE L3 Sensor may be programmed for either a positive or a negative output slope, based on which condition is taught first. If the near limit is taught first, the slope will be positive. If the far limit is taught first, the slope will be negative. Banner s unique scalable analog output (patent pending) automatically distributes the output signal across the width of the programmed sensing window. In the event of analog signal loss for longer than seconds, the analog output goes to 0 V dc or 3.6 ma, which may be used to trigger an alarm. Current Models Voltage Models Analog Output (ma) 0 Positive Slope Analog Voltage Output (V dc) 0 0 Positive Slope Near Window arget Position Far Window Near Window arget Position Far Window Figure. Analog Output as a Function of arget Position Note: he linear analog output tracks slightly past each window limit (from 3.8 ma to 0. ma). eaching Limits for Background Suppression For some applications, ignoring objects beyond a certain distance may be required. o suppress the background, place a target object at the selected distance, and teach the position twice. he sensor s discrete output will activate when an object is detected between the sensor s minimum sensing distance and the taught position. Note: he sensor allows for some forgiveness in this procedure. If the two limits are not exactly the same (but less than 0 mm apart), the sensor will put the set point at the average of the two limits. Program either analog output or discrete output first. For the button or the remote wire, a button click or pulse is: 0.0 seconds 0.8 seconds. eaching Independent Limits for Either Output eaching Analog Limits Using the Auto-Zero Feature (Analog Output) For some analog applications, a sensing distance switch point centered within a sensing window may be required. he EACH procedure is simple: teaching the same limit twice causes the sensor to program a window centered on the position taught. his window is m wide (taught position ± 0. m). o exit Program mode without saving changes, press and hold the same push button (or hold the remote line high) for longer than seconds (before teaching the second limit). he sensor will revert to the last saved program.. Enter programming mode. Push and hold the button for either output for longer than seconds. he sensor will return to RUN mode if first EACH-condition is not registered within 0 seconds. No action required. he appropriate EACH-LED turns ON. he sensor is waiting for first limit.. each the first limit. - el: P/N 67 Rev. E

5 Position the target for the first limit. Click the same button. Position the target for the first limit. For the discrete output, single-pulse the remote line. he appropriate EACH LED turns ON then flashes at Hz. he sensor learns the first limit and waits for the second limit. For the analog output, double-pulse the remote line. 3. each the second limit. Position the target for the second limit. Click the same button. Position the target for the second limit and single-pulse the remote line. he EACH LED goes OFF. he sensor learns the second limit and returns automatically to Run mode.. Program the second output by repeating steps two and three. eaching Identical Limits to Both Outputs When teaching limits simultaneously, both the outputs will have identical limits. o exit Program mode without saving changes, press and hold the same push button (or hold the remote line high) for longer than seconds (before teaching the second limit). he sensor will revert to the last saved program.. Enter programming mode. Push and hold the button for either output for longer than seconds. he sensor will return to RUN mode if the first EACH condition is not registered within 0 seconds. Briefly click the other output button. No action required. he appropriate EACH LED turns ON. he appropriate EACH LED turns ON. he sensor is waiting for the first limit.. each the first limit. Position the target for the first limit. Click either output button. Position the target for the first limit, then triple-pulse the remote line. Both EACH LEDs flash at Hz, alternating red and green. he sensor learns the first limit and waits for the second limit. Both EACH LEDs turn ON. he sensor learns the first limit and waits for the second limit. Both EACH LEDs flash at Hz, alternating red and green. 3. each the second limit. Position the target for the second limit. Click either output button. Position the target for the second limit, then single-pulse the remote line. Both EACH LEDs go OFF. he sensor learns the second limit and returns automatically to Run mode. Enabling or Disabling the In addition to its programming function, the remote line may be used to disable the push buttons for security. Disabling the push buttons prevents undesired tampering with the sensor configuration settings.. Connect the sensor s gray wire.. Four-pulse the remote line to enable or disable the push button. he sensor toggles between enable and disable settings and returns to RUN mode. P/N 67 Rev. E - el:

6 Installation Instructions Wiring NPN Analog Current NPN Analog Voltage PNP Analog Current 7 - V dc ma Discrete Load Laser Control - V dc each - V dc Shield 7 - V dc 0-0 V 3 Discrete Load 6 Laser Control each - V dc - V dc Shield 7 - V dc ma Discrete Load Laser Control - V dc each - V dc Shield PNP Analog Voltage 7 - V dc V Discrete Load Laser Control - V dc each - V dc Shield Key. White. Brown 3. Green. Yellow. Gray 6. Red 7. Blue Quick disconnect (QD) wiring diagrams are functionally identical. Specifications Sensing Range (Diffuse Model) 90% White card: 0.3 to m 8% Gray card: 0.3 to 3 m 6% Black card: 0.3 to m Supply Voltage and Current V dc to V dc (0% maximum ripple) 08 ma maximum at V dc or [600/V dc] ma Supply Protection Circuitry Protected against reverse polarity and transient voltages Delay at Power-up second; outputs do not conduct during this time Sensing Beam 68 nm visible red IEC and CDRH Class laser Radiant output power: 0. mw maximum ypical beam dia: 6 mm ypical laser lifetime: 7,000 hours Output Protection Protected against short circuit conditions Factory Default Settings 00 ms response speed Analog/discrete window limits 0.3 m to m using a 90% reflectivity white card Positive analog slope Push buttons enabled Laser Control Enable: connect red wire to to V dc Disable: connect to 0 to.8 V dc (or open connection) Construction ABS housing; acrylic window; ABS/polycarbonate blend quick disconnect fitting Connections m (6. ft) or 9 m (30 ft) shielded 7-conductor (with drain) PVC-jacketed attached cable or 8-pin M/Euro-style quick-disconnect el: P/N 67 Rev. E

7 Output Rating (Discrete) 00 ma maximum Off-state leakage current: < μa Output saturation NPN: < 00 mv at 0 ma and < 600 mv at 00 ma Output saturation PNP: <. V at 0 ma; <.6 V at 00 ma Output Rating (Analog) Voltage output:. kω minimum load impedance Current output: kω maximum at V; maximum load resistance = [Vcc-./0.0 Ω] Output Response ime (Discrete) Fast: ms ON and OFF Medium: 0 ms ON and OFF Slow: 00 ms ON and OFF Output Response ime (Analog voltage output (-3 db)) Fast: 0 Hz ( ms average/ ms update rate) Medium: Hz (0 ms average/ ms update rate) Slow:. Hz (00 ms average/ ms update rate) Linearity ± 30 mm from 0.3 to. m; ± 0 mm from. to m (Specified at V dc, C using a 90% reflectance white card) emperature Effect Diffuse models: < mm / C Environmental Rating IEC IP67; NEMA 6 Operating Conditions 0 C to 0 C (3 F to F) 90% at 0 C maximum relative humidity (non-condensing) Certifications Output Configuration Discrete (switched): SPS solid-state switch; choose NPN (current sinking) or PNP (current sourcing) models Analog output: 0 V dc to 0 V dc or ma to 0 ma Discrete Output Hysteresis (Diffuse model) Fast: 0 mm Medium: mm Slow: 3mm Minimum Window Size Diffuse model: 0 mm Remote each Input 8 kω minimum (6 kω at V dc) Resolution/Repeatability See Performance Curves Required Overcurrent Protection WARNING: Electrical 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 Current Limiting, Class Power Supply. Supply wiring leads < AWG shall not be spliced. For additional product support, go to Supply Wiring (AWG) Required Overcurrent Protection (Amps) Application Note Allow 30-minute warm-up before programming or operating Performance Curves Resolution/Repeatability vs. Distance 0 ypical Color Sensitivity Resolution (mm) 3 Fast Medium 6% Black 8% Gray 90% White Color Sensitivity (mm) % White to 8% Gray 90% White to 6% Black Distance (m) Slow Figure 3. Resolution/Repeatability vs Distance Distance (m) Figure. ypical Color Sensitivity P/N 67 Rev. E - el:

8 0 ypical Linearity with 90% Reflectance White Card 0 Linearity Error (mm) Distance (m) Figure. ypical Linearity Dimensions Mounting Hardware: M x 0.7 x 0 socket-head cap screw. M x 0.7 hex nut with captured, toothed lock washer. M3 short-arm hex key. 0.7 mm (.0") 86.9 mm (3.") 3.3 mm (.38") SIGNAL OUPU FAS SPEED MED SLOW EACH A D POWER 87.0 mm (3.3").9 mm (0.3") 7.6 mm (.98") RADIAN POWER 0.mW 0ns PULSE, MHz nm COMPLIES O CFR PAR 00.0 AND EN608-:99 Avoid exposurelaser light emitted from this aperture 0.6 mm (.9") 9. mm (0.76") 8.8 mm (.9"). Press and hold appropriate each button untill each light turns ON.. Adjust target to st limit point. Press each button. (each flashes.) 3. Adjust target to nd limit point. Press each button. (each turns OFF.) 68. mm (.70") bn L3NIQ bu -V dc wh -0mA gn gy Discrete Load rd Laser Control -V dc ye each -V dc Shield L-GAGE. mm (0.0").0 mm (0.9") x ø. mm (0.8") C'sink ø7.3 mm (0.9"),.3 mm (0.") deep Accessories 8-Pin hreaded M/Euro-Style Cordsets with Shield Model Length Style Dimensions Pinout (Female) MQDC m (6 ft) Straight yp. M x ø el: P/N 67 Rev. E

9 8-Pin hreaded M/Euro-Style Cordsets with Shield Model Length Style Dimensions Pinout (Female) MQDC-8.7 m ( ft) = White = Brown MQDC m (30 ft) 3 = Green = Yellow = Gray 6 = Pink 7 = Blue 8 = Shield Retroreflectors Model BR- VHG-8X0P Reflectivity Factor Maximum emperature Size C (0 F) 03 mm Note: Retroreflective material has a pressure-sensitive adhesive on it. Surfaces must be clean and dry before applying the adhesive. For best results, use a full-size target and trim it if needed. Mounting Brackets SMBL3 Right-angle bracket 300 series stainless steel mm (0.8") 8.0 mm (0.3") 3.0 mm (0.") ø.0 mm (0.0") R89.6 mm (3.3") x R. (0.0"). mm (0.9") x R. (0.0") R7. mm (.87") x ø.0 mm (0.6") R7 mm (6.77") SMBL3IP Replaceable windows for welding environments Stainless steel construction Includes weld-resistant windows X 9.7 mm (.8") X.9 mm (.0") mm (3.3") Ø. mm (0.8").7 mm (0.0"). mm (.63") 30. mm (.").0 mm (.0") 68.0 mm (.67") ø.0 mm (0.0") 6 3. mm (.3").9 mm (.69").7 mm (0.0") 3.0 mm (0.").0 mm (0.") 8. mm (3.") 6.0 mm (.6") 8. mm (3.36").0 mm (0.0") 3.0 mm (.6") X R 3.3 mm (0.3") 0. mm (0.7"). mm (.3") 07.9 mm (.") SMBL3 Heavy-duty protective bracket 30 series stainless steel Mounting hardware included 73 mm [.88 ] 80 mm [3. ] 7 mm [.8 ] P/N 67 Rev. E - el:

10 Banner Engineering Corp. Limited Warranty Banner Engineering Corp. warrants its products to be free from defects in material and workmanship for one year following the date of shipment. Banner Engineering Corp. 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. his warranty does not cover damage or liability for misuse, abuse, or the improper application or installation of the Banner product. HIS LIMIED WARRANY IS EXCLUSIVE AND IN LIEU OF ALL OHER WARRANIES WHEHER EXPRESS OR IMPLIED (INCLUDING, WIHOU LIMIAION, ANY WARRANY OF MERCHANABILIY OR FINESS FOR A PARICULAR PURPOSE), AND WHEHER ARISING UNDER COURSE OF PERFORMANCE, COURSE OF DEALING OR RADE USAGE. his Warranty is exclusive and limited to repair or, at the discretion of Banner Engineering Corp., replacement. IN NO EVEN SHALL BANNER ENGINEERING CORP. BE LIABLE O BUYER OR ANY OHER PERSON OR ENIY FOR ANY EXRA COSS, EXPENSES, LOSSES, LOSS OF PROFIS, OR ANY INCIDENAL, CONSEQUENIAL OR SPECIAL DAMAGES RESULING FROM ANY PRODUC DEFEC OR FROM HE USE OR INABILIY O USE HE PRODUC, WHEHER ARISING IN CONRAC OR WARRANY, SAUE, OR, SRIC LIABILIY, NEGLIGENCE, OR OHERWISE. Banner Engineering Corp. 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 Engineering Corp. Any misuse, abuse, or improper application or installation of this product or use of the product for personal protection applications when the product is identified as not intended for such purposes will void the product warranty. Any modifications to this product without prior express approval by Banner Engineering Corp will void the product warranties. All specifications published in this document are subject to change; Banner reserves the right to modify product specifications or update documentation at any time. Specifications and product information in English supersede that which is provided in any other language. For the most recent version of any documentation, refer to: Banner Engineering Corp. All rights reserved