W2DN-02A

Wide area Type magnetic sensor W2DN-02A Features High sensitivity magnetic sensor making use of the magnetic impedance effect. The usability has been remarkably improved by reducing the variation in the detection performance. Type code standard Type W2DN - 02 A (1) Represents a wide area magnetic sensor (1) (2) (3) (2) Represents a series name (3) Represents a sensitivity rank Specifications Item Rating / performance Type (sensitivity rank) W2DN-02A max. 155 mm Detection range: Rx, Ry (*1) typ. 145 mm min. 135 mm Exterior dimensions of the magnet: 20 x 20 x 10 mm Standard magnet Surface magnetic flux density: 430 mT (millitesla) Direction of magnetization: direction of thickness Power voltage 5 DCV 10% to 12 DCV +10% Power consumption 20 mA or less Open collector output Output states Maximum output current 20 mA or less, output voltage 16 VDC or less Output residual voltage 0.5 V or less When detected: output transistor OFF Output operation states When not detected: output transistor ON When faulty (*2): output transistor held OFF Response time 0.8 s or less Start-up time after powering on (*3) 1.5 s or less When in operation: -10 to 60 deg C (must be free from freezing or condensation) Ambient temperature (*4) When stored: -20 to 70 deg C (must be free from freezing or condensation) Ambient humidity 25 to 85 %RH *1. The detection range is specified based on the mounting conditions as shown below. (The datum point of the standard magnet is the center of the magnet.) The specifications are given by Rx and Ry, with Rxy shown for information purpose only. Detection range Magnet Direction of attraction Figure 1 Detection range: R Figure 2 Mounting conditions *2. The product has a function to automatically adjust the detection range when the sensor is powering up. This item represents the case of failure to properly conduct the automatic adjustment due to the effects of magnetism in the vicinity of the sensor. *3. It shows the period of time from the powering ON of the sensor to the correct output of the detected state. *4. The ambient temperature (when in operation) indicates the temperature range in which the automatic adjustment of the detection range can be properly performed. 1 W2DN-02A Output circuit diagram Magnetic sensor main Power supply circuit Operation chart (1) In case the automatic adjustment of the detection range has been properly conducted when powering on the sensor 1.5 s or less Power VCC voltage 0 V Detected Magnetism detection Not detected Indeterminate Output ON transistor OFF (2) In case the automatic adjustment of the detection range has failed when powering on the sensor 1.5 s or less Power VCC voltage 0 V Detected Magnetism detection Not detected Indeterminate Output ON transistor OFF 2