User manual OMRON E2Q2 DATASHEET
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Manual abstract: user guide OMRON E2Q2DATASHEET
Detailed instructions for use are in the User's Guide.
[. . . ] (at 200 mA load current) Circuit protection Reverse polarity, output short circuit Alternating magnetic field 100 mT --Indicator Operating indicator (yellow LED), operating voltage (green LED) Ambient temperature Operating: -25° to 70°C Ambient humidity 35 to 95% RH Influence of temperature ± 10% max. of Sn at 23° in temperature range of -25° to 70°C Dielectric strength 1. 500 VAC, 50/60 Hz for 1 min. between current carry parts and case Electromagnetic compatibility EMC EN 60947-5-2 Vibration resistance 10 to 55 Hz, 1 mm amplitude according IEC 60068-2-6 Shock resistance Approx. [. . . ] A maximum of three Proximity Sensors can be connected in series provided that the supply voltage is 100 V minimum.
AND (serial connection)
OR (parallel connection)
In principle, more than two Proximity Sensors cannot be connected in parallel. Provided that Proximity Sensor A does not operate with Proximity Sensor B simultaneously and there is no need to keep the load operating continuously, the Proximity Sensors can be connected in parallel. In this case, however, due to the total leakage current of the Proximity Sensors, the load may not reset properly. It is not possible to keep the load operating continuously with Proximity Sensors A and B in simultaneous operation to sense sensing objects due to the following reason. When Proximity Sensor A is ON, the voltage imposed on Proximity Sensor A will drop to approximately 10 V and the load current flows into Proximity Sensor A, and when one of the sensing objects is close to Proximity Sensor B, Proximity Sensor B will not operate because the voltage imposed on Proximity Sensor B is 10 V, which is too low. When Proximity Sensor A is OFF, the voltage imposed on Proximity Sensor B will reach the supply voltage and Proximity Sensor B will be ON. Then, Proximity Sensor A as well as Proximity Sensor B will be OFF for approximately 10 ms, which resets the load for an instant. To prevent the instantaneous resetting of the load, use a relay as shown on the left.
!Caution Power supply
Do not impose an excessive voltage on the E2Q2, otherwise it may explode or burn. If AC power (100 VAC or more) is supplied to the sensor, it may explode or burn.
Correct Use Design
Effects of Surrounding Metal Provide a minimum distance between the Sensor and the surrounding metal as shown in the table below.
B A C
Effects of Surrounding Metal (Unit: mm)
Model Length A 45 90 120 B 0 250 300 C 0 30 40
E2Q2-N15# #-# # E2Q2-N20 ## -# E2Q2-N30M# #- # E2Q2-N40M# #- #
Do not connect the AC types without load to the power supply. The sensor will be damaged.
Mutual Interference If more than one Sensor is located in parallel, ensure to maintain enough space between adjacent Sensors to suppress mutual interference as provided in the following diagram. Be sure to abide by the following precautions for the safe operation of the Sensor.
Power Supply Voltage and Output Load Power Supply Voltage Make sure that the power supply to the Sensor is within the rated voltage range. If a voltage exceeding the rated voltage range is supplied to the Sensor, it may explode or burn. Load Short-circuiting Do not short-circuit the load, otherwise the Sensor may be damaged. [. . . ] Although the Proximity Sensor is water resistive, a cover to protect the Proximity Sensor from water or water-soluble machining oil is recommended so that its reliability and life expectancy can be maintained. Do not use the Proximity Sensor in an environment with chemical gas (e. g. , strong alkaline or acid gasses including nitric, chromic and concentrated sulfuric acid gases). Inrush Current A load that has a large inrush current (e. g. , a lamp or motor) will damage the Proximity Sensor, in this case connect the load to the Proximity Sensor through a Relay
Mounting the Sensor The Proximity Sensor must be subjected to excessive shock with a hammer when it is installed, otherwise the Proximity Sensor may be damaged or lose its water-resistivity.
Maintenance and Inspection
Periodically perform the following checks to ensure stable operation of the Proximity Sensor over a long period of time. [. . . ]
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