Sensors Sensors MX1A and MX1B: Laser Displacement Detection Sensors MX1A and MX1B: Laser Displacement Detection Sensors • Built-in math capabilities available (MX1B only) • Digital display on ampliŢer; easy setting and monitoring (MX1B only) • Miniature sensor head is compact for high-density installations • Excellent linearity: ±0.0008" (or 20 µm) ±0.5% of displacement (MX1A-B; MX1B-B) • High resolution sensing: 0.0004" or 10 µm = 10mV (MX1A-B; MX1B-B) • Two sensing ranges: 1.18" to 1.97" (30 to 50mm) and 1.97" to 5.12" (50 to 130mm) • MX1B can measure thickness or differences in surface levels when used in combination with another MX1A or MX1B • The shape, size, color, and material of the object do not detract from accurate measurement (see Note 1 below) • Delayed laser, remote interlock, power supply key switch, and laser LED are all included on the sensor head — these features ensure safe operation • Mount the ampliŢer on a 1.378" (35mm) DIN rail 1. Laser sensing of mirror-like surfaces is not recommended. For best results detecting reflective surfaces, tilt the sensor to reduce direct laser reflection. Sensing at a small angle (approximately ±10°) does not significantly reduce the sensing accuracy or linearity of the result- ing analog output. 2. Warning: Class IIIb laser. Do not allow the laser to shine directly into the eyes. Always consider eye safety when installing a laser sen- sor. Make sure the laser beam cannot inadvertently shine into the eyes of people passing by or working in the vicinity. See laser safety infor- mation on page M-20. Power Voltage 120V AC @ 50/60Hz Allowable Range 85% to 110% of the rated voltage Power Consumption MX1A: 15VA, MX1B: 25VA Between terminal (except A.OUT, CAL OUT/IN, AG, and FG terminals) Dielectric Strength and housing: 1,500V AC, 1 minute Between terminal (except A.OUT, CAL OUT/IN, AG, and FG terminals) and Insulation Resistance housing: 100MΩ (minimum), with 500V DC megger 0°C to +50°C Operating Temperature (performance will be adversely affected if the sensor becomes coated with ice) Operating Humidity 45% to 85% RH (avoid condensation) Storage Temperature –20°C to +70°C Vibration Resistance Damage limits: 16.7Hz, 2G, 1 hour in each of 3 axes (when de-energized) 2 Shock Resistance Damage limits: 100m/s (approximately 10G), 3 shocks in each of 3 axes Incandescent light: 3,000 lux (maximum), deŢned as incident or unwanted light Extraneous Light Immunity received by a sensor, unrelated to the presence or absence of intended object Material Housing: diecast zinc; Filter and lens: acrylic; (sensor head only) Q IP65 (sensor head only) — IEC Pub 529, sensors rated IP65 are dust-tight, water- Degree of Protection resistant, and perform best when not subjected to particle or water blasts Weight, Amplifier MX1A: Approximately 2.0kg, MX1B: Approximately 2.5kg Short cable (P/N ends in “S”): Approximately 500g Weight, Sensor Head Long cable (P/N ends in “L”): Approximately 800g MX1A: 4.21" x 5.12" x 4.41" (107 x 130 x 112mm) Dimensions, Amplifier (HxWxD) MX1B: 4.21" x 6.69" x 4.41" (107 x 170 x 112mm) Dimensions, Sensor Head (HxWxD) 1.73" x 0.73" x 1.79" (44 x 18.5 x 45.5mm) www.idec.com USA: (800) 262-IDEC or (408) 747-0550, Canada: (888) 317-IDEC Q-15 General Specifications MX1A and MX1B: Laser Displacement Detection Sensors Sensors Part Numbers: MX1A and MX1B Sensors Part Number Sensing Range Resolution Features Sensor Head Cable Length MX1A – A 12 R6S Display and calculation 16' – 4-7/8" (5m) not available 32' – 9-3/4" (10m) MX1A – A 12 R6L 1.97" to 5.12" 0.002" (50 µm) (50 to 130mm) MX1B – A 12 R6S Display and calculation 16' – 4-7/8" (5m) standard 32' – 9-3/4" (10m) MX1B – A 12 R6L MX1A – B 12 R6S Display and calculation 16' – 4-7/8" (5m) not available 32' – 9-3/4" (10m) MX1A – B 12 R6L 1.18" to 1.97" 0.0004" (10 µm) (30 to 50mm) MX1B – B 12 R6S Display and calculation 16' – 4-7/8" (5m) standard 32' – 9-3/4" (10m) MX1B – B 12 R6L IMPORTANT: The sensor head and ampliŢer are calibrated in pairs — use units with the same serial number together to avoid damage to the laser diode. Using dif- ferent serial numbers together or making alterations to the sensor ampliŢer head or cable will void the factory warranty. MX1A-A, MX1B-A MX1A-B, MX1B-B Reference Sensing Dis- 3.54" (90mm) 1.57" (40mm) tance Detectable Sensing Range ±1.57" (40mm) ±0.39" (10mm) Analog Offset ±1V (±0.16" or 4mm) zero adjustment range ±1V (±0.04" or 1mm) zero adjustment range Analog Response Speed Selectable: High-speed (F) = 1ms, Normal speed (S) = 20ms ±10V DC, 10mA (maximum), measured analog output voltage is proportional to displacement as follows: Analog Output, Measured 0.25V per mm (MX1A-A and MX1B-A), 1V per mm (MX1A-B and MX1B-B) Resolution* 0.002" (50 µm) = 12.5 mV 0.0004" (10 µm) = 10mV Linearity ±0.004" (100 µm) ±0.5% of displacement ±0.0008" (20 µm) ±0.5% of displacement Voltage range: ±10V DC; Impedance: 100kΩ, measured analog output from an MX1A or MX1B is used as the calculated Analog Input, Calculated analog input for the MX1B only; the calculated output voltage is proportional to the calculated values for the thickness or (MX1B only) difference in levels: 0.25V per mm (MX1A-A and MX1B-A), 1V per mm (MX1A-B and MX1B-B) ±10V DC, 10mA (maximum), measured analog output from an MX1A or MX1B is used as the calculated analog input for Analog Output, Calculated MX1B only; the calculated output voltage is proportional to the calculated values for the thickness or difference in lev- els: (MX1B only) 6.35V per inch or 0.25V per mm (MX1A-A and MX1B-A), 25.32V per inch or 1V per mm (MX1A-B and MX1B-B) Digital Output Transistor 30V DC, 0.1A/point (maximum), upper LED is lit when measured value > preset, lower LED is lit when < preset Digital Output Setting Separate settings for upper and lower limits (inŢnite turn) Digital Output Response Rise and fall: 500 µsec (maximum) Out LED On: digital output turns on Upper and Lower LEDs Upper LED on: Upper limit output turns on Lower LED on: Lower limit output turns on Enable Input (Synchronous) Controls inspection output with synchronous signal (one coupler) Enable LED On: For synchronous signal input Alarm Input Using 2 units together: Main unit (MX1B only) takes the alarm output from the sub unit (MX1A or MX1B) Transistor 30V DC, 0.1A / pt. (maximum), alarm output is lit when alarm condition exists, as displayed by the alarm LEDs Alarm Output Dark on: Reţected light is insufŢcient Bright on: Reţected light is excessive Alarm LEDs Far on: Detected distance > maximum Near on: Detected distance < minimum Calculation Over LED On: Analog output (calculated) exceeds output range, MX1B only Alarm Input LED On: When alarm input turns on, MX1B only (when using two units together) Green LED when power is on Power LED (on both Orange LED when a laser is emitted during normal operation Laser beam emitted approximately 10 seconds after power-up; laser emission can be controlled while the power is on, amplifier and sensor head) using remote interlock provided Temperature Drift ±2 mV per °C (maximum) Frequency 11.3KHz Q Hysteresis Selectable: Narrow (N) = 40 mV or wide (W) = 200 mV Light Source Laser diode (780 nm) Receiving Element PSD (position sensitive device) 1. These specifications were developed from tests using a white ceramic object at the reference sensing distance, using the normal response speed at (20ms) 25ºC. 2. * Peak to peak of analog output noise. Q-16 www.idec.com USA: (800) 262-IDEC or (408) 747-0550, Canada: (888) 317-IDEC Sensors Functional Specifications Sensors Sensors MX1A and MX1B: Laser Displacement Detection Sensors Applications Checking for warped boards ➤ ➤ ➤ ➤ ➤Sensing loose caps ➤ Positioning a robot or actuator Detecting the height and width of wood or blocks Detecting overlapping sheets Counting sheets of paper ➤➤ ➤ ➤ ➤ Q Detecting the thickness ➤➤of lumber ➤ Sensing the roundness of a roller www.idec.com USA: (800) 262-IDEC or (408) 747-0550, Canada: (888) 317-IDEC Q-17 16'–4-7/8" (5mm) or 32'–9-3/4" (10mm) 1.61" (41mm) 2–R1.0 2–R2.0 MX1A and MX1B: Laser Displacement Detection Sensors Sensors Dimensions Sensor Head 2 - M4 0.04" (10mm) 1.79" (45.5mm) 0.73" 1.54" (39mm) (18.5mm) Optical Axis 1.16" (29.5mm) 0.4" (10.5mm) Beam Attenuation 0.2" (5.5mm) 0.03" (0.8mm) Panel Cut-Out Sensor Head AB Amplifier Unit Q 1.50" 4.96" (38mm) (126mm) 0.2" 1.53" (4mm) (39mm) 1.6" (40mm) MX1A: 4.57" (116mm) MX1B: 6.14" (156mm) Note: The amplifier can also be mounted on a 1.375" (35mm) DIN rail. Q-18 www.idec.com USA: (800) 262-IDEC or (408) 747-0550, Canada: (888) 317-IDEC R2.0 2–R1.0 2–R2.0 Ş 0.27" (6.8mm) Sensors 0.7" (18mm) 0.5" ± 0.1 (11.5mm ± 0.004) 0.31" (8mm) 1.73" (44mm) 0.04" (10mm) 1.50" (38mm) 1.10" (28mm) Sensors Sensors MX1A and MX1B: Laser Displacement Detection Sensors Dimensions, continued MX1A Amplifier Unit 0.30" (7.62mm) Centers Ø 0.12" (M3) 12 Places 4.96" (126mm) 4.41" 5.51" (112mm) (140mm) Ø 0.14" (M3.5) 0.67" Three Places (17mm) 4.57" Ø 0.17" (4.5mm) (116mm) Four Places 5.12" (130mm) MX1B Amplifier Unit 0.30" (7.62mm) Centers Ø 0.12" (M3) 17 Places Side View Typical for MX1A and 4.96" (126mm) MX1B 5.51" (140mm) 4.41" (112mm) 4.21" (107mm) 4.88" 0.67" Ø 0.14" (M3.5) (124mm) (17mm) Three Places Ø 0.17" (4.5mm) 6.14" Four Places (156mm) 6.69" (170mm) Q www.idec.com USA: (800) 262-IDEC or (408) 747-0550, Canada: (888) 317-IDEC Q-19 DANGER MX1A and MX1B: Laser Displacement Detection Sensors Sensors Laser Safety Information Installation: If a sensor is installed so that the laser beam may shine or reţect into the eyes of a per- son passing by or working in the vicinity, place an opaque sheet of material in front of the beam to prevent potential eye injury. For people working near a laser sensor, protective glasses which screen out a signiŢcant amount of the harmful radiation are recommended at all times. All laser sensors also include a remote interlock terminal which can be used to turn the laser on or off with an external switch, as required, to operate the sensor safely from a remote location. As required by law for all class IIIb lasers, the MX1A and MX1B sensors feature a safety key switch. For the MX1A and MX1B, an LED indicator is lit (green) upon laser transmission; 10 seconds later the LED changes color (amber) when the laser beam turns on. To avoid exposure to harmful radiation, never disassemble a laser sensor. WARNING: Do not allow class IIIa and IIIb laser beams to shine directly into the eyes. Do not allow lasers to reţect from a glossy, shiny, or reţective surface into the eyes. ! ! Labelling: IDEC laser sensors include CDRH-approved safety warnings shown on the right and ! ! below, in compliance with federal regulations of the Center for Devices and Radiological Health. MX1C Miniature Laser Sensor: Class IIIa Laser (670nm) Visible Beam ! ! LASER LIGHT – AVOID ! ! DIRECT EYE EXPOSURE 5mW at 670 nm CLASS IIIa LASER PRODUCT MX1A and MX1B Laser Sensors: Class IIIb Laser (780nm) Invisible Beam ! ! INVISIBLE LASER RADIATION – AVOID ! DIRECT EXPOSURE TO BEAM ! 5mW at 780 nm CLASS IIIb LASER PRODUCT Q All Laser Sensors: IdentiŢcation and CertiŢcation ! ! MX1A/B Invisible Laser: MX1C Visible Laser: mfd.: FEBRUARY 1997 Aperture Warning Aperture Warning Product conforms to AVOID EXPOSURE – AVOID EXPOSURE – 21 CFR1040 Invisible laser radiation is Laser light is emitted ! ! emitted from this aperture. from this aperture. Q-20 www.idec.com USA: (800) 262-IDEC or (408) 747-0550, Canada: (888) 317-IDEC DANGER Sensors Sensors Sensors General Information General Information Extraneous Light SpeciŢcations Bright, extraneous light such as sunlight, incandescent lights, or ţuorescent Do not operate a sensor under any conditions exceeding these speciŢcations. lights may impair the performance of sensors in detecting color or light. Do not operate a sensor under current and voltage conditions other than 3. SA6A ultrasonic sensors are not affected by extraneous light. those for which the individual sensor is rated. Do not exceed the recommended operating temperature and humidity. Although sensors are rated for operation below 0°C, this speciŢcation does Make sure that extraneous light does not exceed recommended levels found not imply that performance characteristics will remain constant under pro- in the individual speciŢcations sections. When 500 lux is speciŢed, this is longed freezing conditions. Continued exposure and the accompanying frost, equal to 50 footcandles. The average factory illumination is ordinarily below ice, dew, and condensation which accumulate on the optical surface will this level, except in areas where visual inspection is being performed. Only in adversely affect sensor performance. such brightly lit areas is incident light of particular concern. To maintain superior performance characteristics, do not exceed vibration and Unwanted light interference can often be avoided simply by making sure that shock resistance ratings while operating a sensor. In addition, avoid isolated the optical receiver is not aimed directly toward a strong light source. When impacts to the sensor housing which are severe enough to adversely affect mounting direction cannot be adjusted, place a light barrier between all the waterproof characteristics. nearby light sources and the receiver. Reţected-Light Sensors When installing sensors which detect reţected light, make sure that IEC (International Electrotechnical Commission) Ratings unwanted light reţections from nearby surfaces, such as the ţoor, walls, reţective machinery, or stainless steel, do not reach the optical receiver. Sensors rated IP67 are resistant to moisture when occasionally immersed in Also, make sure that reţected-light sensors mounted in close proximity do not still water. Sensors rated IP64 through IP66 are resistant to moisture when cause interfering reţections. When it is not possible to maintain the recom- occasionally subjected to splashing or when located in the vicinity of turbu- mended clearance between sensors, as noted in the individual installation lent waters. These ratings do not imply that a sensor is intended for use sections, provide light barriers between sensors. under continual high-pressure water spray. Avoid such applications to main- tain optimal sensor performance. Through-Beam Sensors Sensors rated IP64 through IP67 are dust-tight and water-tight. For best per- formance, avoid using any sensor in an area where it will be subjected to A slit attachment is available to modify the beam size of through-beam sen- heavy particle blasts and where dust, water, or steam will accumulate on the sors. This option is recommended for detecting very small objects (near the optical surface. size of the smallest object which a sensor can detect) or for eliminating light interference when sensors are mounted in close proximity. Laser Sensors Start-up IMPORTANT: Always consider safety when installing a laser sensor of any kind. Make sure that the laser beam cannot inadvertently shine into the eyes of people passing by or working in the vicinity. See safety information on page Q-20. Do not test the housing for dielectric strength and insulation resistance, since the housing is connected to the electronic circuit ground of a sensor. Do not perform dielectric strength and insulation resistance tests on electrical sys- tems without disconnecting photoelectric sensors, as such testing may result Mounting in damage to the sensor. The mounting bracket and hardware are included with sensors, where appli- Several lines of sensors, as noted in the individual operation sections, are cable. Use the appropriate hardware for mounting, along with washers and provided with an internal circuit to turn an output off for a speciŢed amount of spring washers or lock nuts. Do not overtighten attachment hardware. Over- time upon power-up. This delay is normal; it prevents a transient state when tightening causes damage to the housing and will adversely affect the water- turning power on. proof characteristics of the sensor. Best results can be obtained when the sensor is mounted so that the object sensed is in the center of the beam, rather than when the object is located Optimum Performance near the edges of the sensing window. In addition, the most reliable sensing occurs when the majority of the objects being sensed are well within the sensing range, rather than at the extreme near and far limits. The optical surface of each sensor must be cleaned on a regular basis for con- tinual superior performance. Use a soft cloth dipped in isopropyl alcohol to remove dust and moisture build-up. IMPORTANT: Do not use organic solvents (such as thinner, ammonia, caustic soda, or benzene) to clean any part of a sensor. Q All sensors experience signal inconsistencies under the inţuence of inductive noise. Do not use sensors in close proximity to transformers, large inductive motors, or generators. Avoid using sensors in direct contact with sources of excessive heat. Also avoid operation in close proximity to welding equipment. 1. Even though the SA6A ultrasonic sensor features protection against noise, there may be adverse effects from strong noise. 2. It is strongly recommended to avoid using any sensor where it will be continually subjected to elements which impair perfor- mance or cause corrosive damage to the sensor. In particular, avoid strong vibrations and shocks, corrosive gases, oils, and chemi- cals, as well as blasts of water, steam, dust, or other particles. www.idec.com USA: (800) 262-IDEC or (408) 747-0550, Canada: (888) 317-IDEC Q-55 General Information Sensors Wiring Glossary Attenuation: Reduction of beam intensity as a result of environmental fac- Avoid running high-voltages or power lines in the same conduit with sensor tors such as dust, humidity, steam, etc. signal lines. This prevents inaccurate results or damage from induced noise. Use a separate conduit when the inţuence of power lines or electromagnetic Dark on: Output energized when light is not detected by the receiving ele- equipment may occur, particularly when the distance of the wiring is extended. ment. For through-beam sensors, light from the projector is not detected by the receiver when an object is present. For reţected light sensors, light is IMPORTANT: Connect the sensor cables and wires as noted in the individual not detected when it is not reţected from an object surface. Wiring sections. Failure to connect as shown in wiring diagrams will result in damage to the internal circuit. Diffuse-reţected light sensors: Sensors that detect all scattered, reţected light. Light reţected from nearby surfaces, as well as intended When extending sensor cables and wires, make sure to use cables equal or object surface, is detected. Diffuse-reţected light sensors are often called superior to that recommended in the individual speciŢcations sections. “proximity switches,” since they switch when any object is near. Also use to detect color contrast when colors reţect light intensity differently (green When wiring terminals, be sure to prevent contact between adjoining termi- LED recommended for this application). nals. When using ring or fork lug terminals, use the insulated sleeve style only. Each sensor terminal can accept only one ring of fork lug terminal. EEPROM: Acronym which stands for electronically erasable, programma- ble, read only memory. On ISF series photoelectric sensors, use recommended cable, along with the attached packing gland and washer, when wiring the terminals. This ensures Excess gain: Ratio of optical power available at a given projector-to- waterproof and dustproof characteristics. receiver range divided by the minimum optical power required to trigger the receiver. Power Supply Extraneous light: Incident light received by a sensor, irrelated to the pres- ence or absence of object being detected. Extraneous light is usually Noise resistance characteristics are improved when a sensor is grounded to unwanted background light such as sunlight and incandescent lamps in the 0V power terminal. If the 0V power terminal is not at ground potential, use close proximity. a ceramic 0.01µF capacitor which can withstand 250V AC minimum. ΔE: The measurement of color difference as a three-variable function, When using a switching power supply, be sure to ground the FG terminal to located on an XYZ axis of light, hue, and chroma values. eliminate high-frequency noise. The power supply should include an insulat- ing transformer, not an autotransformer. Hysteresis: Operating point and release point at different levels. For solid state sensors, this is accomplished electrically. For mechanical switches, it On ISF series photoelectric sensors, the power supply should be sized accord- results from storing potential energy before the transition occurs. ing to the voltage drop through the lead wire when using a long extension for the DC type (328' or 100m maximum extension). Light on: Output energized when light is detected by receiving element. For through-beam sensors, light from the projector is detected by the Power Supply receiver when an object is not present. For reţected light sensors, light is detected when it is reţected from an object surface. The compact PS5R-A power supply is the perfect companion item for most Linearity: Measurement of how nearly linear, that is, how accurate actual IDEC sensors. This power supply is only 1.77" (45mm) wide, 3.15" (80mm) tall, analog output is, with respect to distance. and 2.76" (70mm) deep. Call an IDEC representative for more details. NPN/PNP: Types of open collector transistors. NPN is a sink transistor; Part Number Output Ratings output on establishes negative potential difference. PNP is a source tran- sistor; output on establishes positive potential difference. PS5R-A12 12V DC, 0.62A Polarizing: Filtering out all reţected light except that which is projected in PS5R-A24 24V DC, 0.32A one plane only. Polarized retro-reţected light sensors detect the light from corner-cube type reţectors when an object is not present. Reţected-light sensors: Sensors with the projector and receiver in one housing. Light is projected by the light source, and reţected light is received by the optical surface. Includes diffuse-reţected, retro-reţected, limited-reţected, and spot-reţected sensors. Repeatability: Ability of a sensor to reproduce output readings consis- Miscellaneous tently when the same value is applied consecutively, in the same direction, for a speciŢed number of cycles, or for a speciŢed time duration. Strong magnetic Ţelds may detract from the accuracy of the sensing measure- Resolution: Overall dimension of the smallest object which can be ment. Avoid mounting a sensor directly to machinery, since the housing is con- detected (when sensing the presence of an object) or smallest increment of nected to the electronic circuit ground of the sensor. If it is necessary to mount distance which can be distinguished with reliable results (when sensing a sensor on machinery, use the insulating plate and sleeve provided. the position of an object). Response time: Time elapsed between input and output. Total response time is the sum of object detection, ampliŢer response, and output response times. Retro-reţective scan: This type of reţected light sensor uses a special reţector to return projected light when an object is not present. Sensor Q detects the presence of an object when the light is reţected differently. Through-beam sensors: Sensors with a separate projector and receiver. The light source from the projector is detected by the receiver, except when an object is present. Transient: Undesirable surge of current (many times larger than normal current) for a very short period, such as during the start-up of an inductive motor. Q-56 www.idec.com USA: (800) 262-IDEC or (408) 747-0550, Canada: (888) 317-IDEC Sensors