{"product_id":"dual-variable-reluctance-sensor-interface-module-stepper-motor-based-incremental-rotary-encoder","title":"Dual Variable – Reluctance Sensor Interface Module – Stepper Motor Based Incremental Rotary Encoder","description":"\u003cp\u003eThis product offers a dual−channel low component count interface solution for ground-referenced variable\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ereluctance sensors\u003c\/strong\u003e. Each of the two identical channels interfaces with a variable−reluctance sensor, and continuously compares the sensor output signal to a user−programmable internal reference. An alternating input signal of appropriate amplitude at IN1 or IN2 will result in a rectangular waveform at the corresponding OUT1 and OUT2 terminal, suitable for interface to either standard microprocessors or standard logic families. A diagnostic input, common to both channels, provides a means to test for degradation or loss of the physical connector to both sensors. Each channel of the circuit has independent input bias and clamp circuitry, and independent comparators with\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eHysteresis voltage generators.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBoth channels share a common reference generator for normal and diagnostic modes. Basically, the circuit converts the sinewave signal of the sensor into a clean rectangular wave signal.\u003c\/p\u003e\n\u003ch3\u003eInput Protection\u003c\/h3\u003e\n\u003cp\u003eAn active clamp is provided on each input to limit the voltage on the input pin and prevent substrate current injection. The clamp is specified to handle\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e±12 mA\u003c\/strong\u003e. This puts an upper limit on the amplitude of the sensor output. With resistor value\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eR3 = 22 k\u003c\/strong\u003e, then, Therefore, the VRS (pk−pk) IN1 and In2 voltage can be as high as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e480 V\u003c\/strong\u003e. The circuit will typically run at a frequency up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1.8 MHz\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eif the input signal does not activate the positive or negative input clamps. Frequency performance will be lower when the positive or negative clamps are active. A typical performance will be up to a frequency of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e680 kHz\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith the clamps\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eConnections:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCN2 and CN3 Sensor 1 and Sensor 2 Interface\u003c\/li\u003e\n\u003cli\u003eJumper 1 Diagnostic Mode Selection\u003c\/li\u003e\n\u003cli\u003eD1 Power LED\u003c\/li\u003e\n\u003cli\u003eCN1: Pin1 and Pin 2 = VCC, Pin 3 and Pin4 = GND, Pin5 = Output 1, Pin6 = Output 2, Pin 7 and Pin 8 = GND\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eStepper Motor based 2 Channel Incremental Encoder Channel A and Channel B Phase Shift Output to detect the rotation direction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOther than a reluctance sensor, the project can help to use a stepper motor as a rotary encoder. Connect the 4 wires of a bipolar stepper motor at input terminal S1, GND, and S2 and GND. The project provides 2 channel rotary encoder output channel A and Channel B, the output is\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003e200 Lines per rotation\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand both outputs are phase-shifted which can help to detect the direction of the encoder.\u003c\/p\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAnti−Skid Braking and Traction Control\u003c\/li\u003e\n\u003cli\u003eVehicle Stability Control\u003c\/li\u003e\n\u003cli\u003eDrive Belt Slippage Detection\u003c\/li\u003e\n\u003cli\u003eCrankshaft\/Camshaft Position Sensing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePower Supply 5V DC +\/-10%\u003c\/li\u003e\n\u003cli\u003eTwo Independent Channels TTL Output\u003c\/li\u003e\n\u003cli\u003eInternal Hysteresis\u003c\/li\u003e\n\u003cli\u003eInput Threshold +\/- 160mV\u003c\/li\u003e\n\u003cli\u003eInput Signal Sensitivity 250mV to 250V Peak to Peak\u003c\/li\u003e\n\u003cli\u003eBuilt−In Diagnostic Mode – Jumper Selection\u003c\/li\u003e\n\u003cli\u003eSite and Control for Automotive Applications\u003c\/li\u003e\n\u003cli\u003eDirect Reluctance Sensor Interface – Screw Terminal Connectors\u003c\/li\u003e\n\u003cli\u003ePower LED\u003c\/li\u003e\n\u003cli\u003eScrew Terminals for Sensor Interface\u003c\/li\u003e\n\u003cli\u003eHeader Connector for Power Supply and Output\u003c\/li\u003e\n\u003cli\u003e4X 2.5MM Mounting Holes\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 33.97 x 29.85mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":47201454817452,"sku":"S128","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/S128.jpg?v=1789375794","url":"https:\/\/dotfry.com\/products\/dual-variable-reluctance-sensor-interface-module-stepper-motor-based-incremental-rotary-encoder","provider":"dotfry","version":"1.0","type":"link"}