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TL-T2Y1 Datasheet(PDF) 7 Page - Omron Electronics LLC |
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TL-T2Y1 Datasheet(HTML) 7 Page - Omron Electronics LLC |
7 / 14 page Proximity Sensors Technical Guide The following conditions must be considered to understand the conditions of the application and location as well as the relation to control equipment. ●Model Selection * mT (millitesla) is a unit for expressing magnetic flux density. One tesla is the equivalent of 10,000 gauss. Precautions for Correct Use Item Points of consideration Sensing object and operating condition of Proximity Sensor Electrical conditions Environ- mental conditions Mounting conditions Influence of external electromag- netic fields • The influence within a DC magnetic field is 20 mT* max. Do not use the Sensor at a level higher than 20 mT. • Sudden changes in the DC magnetic field may cause malfunction. Do not use the Sensor for applications that involve turning a DC electromagnet ON and OFF. • Do not place a transceiver near the Sensor or its wiring. Doing so may cause malfunction. Other con- siderations Cost feasibility: Price/delivery time Life: Power-ON time/frequency of use Check the relation between the sensing object and the Proximity Sensor. Sensing object Proximity Sensor Sensing distance Surrounding metals Specific condi- tions of object Direction of ob- ject movement Peripheral metal Sensing distance Material, size, shape, existence of plating, etc. Transit interval, speed, existence of vibration, etc. Material, distance to Sensor, orien- tation, etc. Fluctuation in transit point, al- lowable error, etc. Sensing (set) distance, shape of Sensor (rectangular, cylindrical, through- beam, grooved), influence of peripheral metal (Shielded Sensors, Non- shielded Sensors), response speed (response frequency), influence of temperature, influence of voltage, etc. Verify the electrical conditions of the control system to be used and the electrical performance of the Proximity Sensor. Load Output DC (voltage fluctuation, current capac- ity value) AC (voltage fluctuation, frequency, etc.) Need for S3D2 Controller Power supply Selecting the power supply type DC DC + S3D2 Controller AC { Resistive load - Non-contact control system Inductive load - Relay, solenoid, etc. • Steady-state current, inrush current • Operating, reset voltage (current) Lamp load • Steady-state current, inrush current Open/close frequency Load Selecting the power supply type DC DC + S3D2 Controller AC Control output Maximum current (voltage) Leakage current Residual load voltage { The environmental tolerance of the Proximity Sensor is better than that of other types of Sensors. However, investigate carefully before using a Proximity Sensor under harsh temperatures or in special atmospheres. • Water Resistance Do not use the Sensor in water, rain, or outdoors. • Ambient Conditions To maintain reliability of operation, do not use the Sensor outside the specified temperature range or outdoors. Even though the Proximity Sensor has a water-resistant structure, it must be covered to pre- vent direct contact with water or water-soluble cut- ting oil. Do not use the Sensor in atmospheres with chemical vapors, in particular, strong alkalis or ac- ids (nitric acid, chromic acid, or hot concentrated sulfuric acid). • Explosive Atmospheres Do not use the Sensor in atmospheres where there is a danger of explosion. Use an Explosion- proof Sensor. Temperature and humidity Highest or lowest values, existence of direct sunlight, etc. Temperature influence, high-temperature use, low temperature use, need for shade, etc. Atmosphere Water, oil, iron powder, or other special chemicals Need for water resis- tance or oil resistance, need for explosion- proof structure Vibration and shock Size, duration Need for strength, mounting method When deciding the mounting method, take into consideration not only restrictions due to mechanical devices, but also ease of main- tenance and inspection, and interference between Sensors. Wiring method, existence of in- ductance surges Connection Wires Wire type, length, oil-resistant cable, shielded cable, robot cable, etc. Conduits, ducts, pre-wired, terminal wiring, ease of main- tenance and inspection Mounting procedure Installation location Existence of mounting brackets, direct mounting, secured with bolts or screws Ease of maintenance and inspection, mounting space http://www.ia.omron.com/ C-2 (c)Copyright OMRON Corporation 2008 All Rights Reserved. |
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