User manual OMRON E3T DATASHEET

[. . . ] Miniature Square Photoelectric Sensor in plastic housing E3T · Precision pinpoint LED · 3. 5 mm thin flat shape or 6. 6 mm side view shape where space is crucial · IP67 · Pulse synchronisation for high ambient light immunity Features 3. 5 mm flat model with background supression (BGS) with highest repeatability even for differently coloured objects. Minimal black/white error (mm) Unique light receiving lens shape for high precision alignment Light receiving lens New mounting technology for reliable background suppression in 3. 5 mm flat housing Flip chip (IC) Light receiving element 25 20 15 10 5 0 White paper Black paper Rear Front Side E3T-FL1@ Application Object detection through small holes · The precision pinpoint LED of the through-beam models provides appropriate sensing distances for very precise and reliable detection even through smallest slits and gaps with e. g. · The coaxial optics and the small focal lens of the retro-reflective models allow the detection of small (dia 2 mm) objects or through small holes (dia 2 mm). E3T 1 Application E3T-SL limited-reflective models (side view) · Minimum detection object: 0. 15 mm dia. · Limited-reflective optics reduce the influence of changing backgrounds and surrounding metal for enhanced detection stability. E3T-FD Diffuse-reflective Models (Flat) · Minimum detection object: 0. 15 mm dia. [. . . ] When using an inductance load, be sure that the inrush current will not exceed 2. 4 times larger than the rated current. Light OFF ON ON *If the E3T fs operating level is set to the stable operation range, the E3T will be in most reliable operation without being influenced by temperature change, voltage fluctuation, dust, or setting change. If the operating level cannot be set to the stable operation range, pay attention to environmental changes while operating the E3T. Use of E39-E10 Sensitivity Adjustment Unit (Dark-ON: E3T-ST12) (At Min) (At Center) (At Max. ) Indicator Adjuster Mounting When mounting the Sensor, never strike it with a heavy object, such as a hammer. Doing so may reduce its watertight properties. Use M2 screws and flat or spring washers to secure the Sensor. (Tightening torque: 0. 15 N·m max. ) Mounting the Sensor on Moving Parts Consider models that use break resistant cables (e. g. , Robotics Cables) if the Sensor A will be mounted on a moving part, such as a robot hand. The flexing resistance of Robotics Cable at approximately 400 thousand times is far superior to that of standard cable at approximately 14 thousand times. B C 1. Mount the Unit on the Receiver. R 2. Set the adjuster of the Sensitivity Adjustment Unit to Max. After mounting on the Sensor, adjust the optical axis and secure the Sensor. Place a workpiece between the Emitter and Receiver and gradually turn the adjuster counterclockwise toward the Min. Stop turning the adjuster when the operation indicator and stability indicator (green) turn ON. Remove the workpiece and confirm that the operation indicator is OFF and the stability indicator (green) is ON. This completes the adjustment. Note: If the light attenuation rate due to a workpiece is 40% or less, the stability indicator will not turn ON whether or not light is received. When the variation of light is small such as when sensing semi-transparent workpieces, carefully perform preliminary testing. Weight Cable Bending Rupture Test (Tough Cable Breaking Test) The cable is repeatedly bent with power supplied to check the number of bends until the current is turned OFF . Others Do not install the E3T in the following locations. · Locations subject to excessive dust or dirt · Locations subject to direct sunlight · Locations subject to corrosive gas · Locations subject to contact with organic solvents · Locations subject to vibration and shock · Locations subject to contact with water, oil, or chemicals · Locations subject to high humidities that might result in condensation Specimen Test Bending angle () Bending speed ConLoad tents/ condi- Operation per tions bend Curvature radius of support point (R) Result Standard cable Robotics cable 2. 4 mm dia. (7/ 2. 4 mm (20/ 0. 127 mm dia. ), 0. 08 mm dia. ), 3 conductors Test 3 conductors 90° each to the left and right 50 times/min 200 g Once in 1 to 3 in the diagram 5 mm Approx. 400, 000 times 12 Standard Photoelectric Sensors Dimensions Sensors Through-beam Models (Side-view) E3T-ST1@ (Emitter) E3T-ST2@ (Emitter) 7 9. 5 Mounting Holes Two, M2 R2. 5 7. 7 Two, 2. 2 dia. 3. 8 9±0. 2 2. 7 9 Emitter 14. 6 18. 5 e-CON Pre-wired Connector Model (E3T-ST1 15 Specifications +V --0V --- Emitter: E3T-STvinyl-insulated round cable with 2 conductors (Conductor cross section: 0. 1 mm², Insulator diameter: 0. 7 mm), Standard length: 2 m 3 4 2. 4-dia. vinyl-insulated round cable with 3 conductors Standard lengths: 0. 3 m and 2 m 2 3 4 15. 6 E3T-ST1@ (Receiver) E3T-ST2@ (Receiver) Operation indicator* 7 3. 1 Stability indicator 3. 45 2. 7 R2. 5 9. 5 Mounting Holes Two, M2 7. 7 Two, 2. 2 dia. 3. 8 9 14. 6 9 ±0. 2 18. 5 Receiver Lens (1. 3 dia. ) 2. 4-dia. vinyl-insulated round cable with 3 conductors (Conductor cross section: 0. 1 mm², Insulator diameter: 0. 7 mm), Standard length: 2 m e-CON Pre-wired Connector Model 5. 9 (E3T-ST [. . . ] · Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical equipment, amusement machines, vehicles, safety equipment, and installations subject to separate industry or government regulations. · Systems, machines, and equipment that could present a risk to life or property. Please know and observe all prohibitions of use applicable to the products. NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCT IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM. PERFORMANCE DATA Performance data given in this document is provided as a guide for the user in determining suitability and does not constitute a warranty. [. . . ]