German Hengstler encoder Hengstler model Hengstler price

Hengstler encoders convert displacement into periodic electrical signals, which are then converted into counting pulses, with the number of pulses representing the magnitude of displacement. According to operating principle, encoders can be divided into incremental and absolute types. Incremental encoders convert displacement into periodic electrical signals, which are then converted into counting pulses, with the number of pulses representing the magnitude of displacement. An encoder is a device that converts angular or linear displacement into electrical signals. The former is called a code disk, and the latter a code scale. According to the readout method, encoders can be divided into contact and non-contact types. Contact types use brush output, where a brush contacts a conductive or insulating area to indicate whether the code status is "1" or "0"; non-contact types use photosensitive or magnetosensitive elements as receiving sensors. When using photosensitive elements, transparent and opaque areas indicate whether the code status is "1" or "0".

Hengstler encoder principle

Optical encoders are sensors that achieve displacement-to-digital conversion using the principle of grating diffraction. Through photoelectric conversion, they convert the mechanical geometric displacement on the output shaft into digital pulse quantities. Common optical encoders consist of a grating disk, a light-emitting element, and a photosensitive element. The grating is essentially a disk engraved with regular transparent and opaque lines. The luminous flux received by the photosensitive element changes synchronously with the transparent lines. The waveform output from the photosensitive element is shaped into pulse signals, with one pulse output per revolution. Based on pulse changes, equipment displacement can be precisely measured and controlled. Incremental encoders directly use the photoelectric conversion principle to output three sets of square wave pulses: phase A, phase B, and phase Z. The phase difference between pulse groups A and B is 90º, allowing easy determination of rotation direction, while phase Z provides one pulse per revolution for reference point positioning. Its advantages include simple structural design, a mechanical average life of tens of thousands of hours, strong anti-interference capability, high reliability, and suitability for long-distance transmission. Its disadvantage is the inability to output absolute position information of shaft rotation.

Hengstler encoder selection considerations

1) Standard housing shapes for absolute encoders: 38MM, 58MM, 66MM, 80MM.100MM.2) Absolute encoders are classified into: single-turn and multi-turn. 3) Bus encoders are classified by principle into: pseudo-absolute encoders and optical absolute encoders. 4) Bus encoder cable exit directions are classified into: side exit and rear exit. 5) Bus encoder shafts are classified into: 6MM, 8MM, 10MM, 12MM, 14MM, 25MM. 6) Bus encoders are classified into: solid shaft, blind hollow shaft, and through hollow shaft. 7) Bus encoder protection ratings are classified into: IP54-68. 8) Bus encoder mounting methods are classified into: clamping flange, synchronous flange, clamping band with synchronous flange, blind hollow (spring leaf, clamping), and through hollow (spring leaf, key pin). 9) Absolute encoder accuracy is classified into: single-turn accuracy and multi-turn accuracy, which combine to form total accuracy, commonly expressed in bits (typically 24 bits, 25 bits, 30 bits, 32 bits). 10) Absolute encoder communication protocol baud rates: 4800~115200 bit/s, default is 9600 bit/s. Refresh cycle is approximately 1.5ms. Eleven. Encoder output options: SSI, 4-20MA, profibus-dp, DEVicenet, parallel, binary code, BESM58, BiSS, ISI, CANopen, Endat, and Hiperface, etc.

Hengstler encoder selection notes

1) Mechanical installation dimensions: including locating spigot, shaft diameter, mounting hole positions; cable exit direction; installation space volume; whether the environmental protection rating meets requirements. 2) Resolution: i.e., the number of pulses output per revolution by the encoder during operation, and whether it meets the design accuracy requirements. 3) Electrical interface: Common encoder output methods include push-pull output (F type HTL format), voltage output (E), open collector (C, common C is NPN transistor output, C2 is PNP transistor output), and line driver output. The output method should match the interface circuit of its control system.

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