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Motorcoder

Sacle-less 1um absolute position linear encoder

This is an absolute linear encoder that uses a permanent magnets track of a linear motor in place of a traditional scale. Compatible with Mitsubishi and Panasonic servo systems, it offers a resolution of less than 1μm, supports speeds exceeding 3m/sec, and achieves a repeatability of 10μm. This is an absolute linear encoder, so no initial pole detection or homing operation is required.

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No linear scale

  • No linear scale.

  • Position sensing with linear motor magnets

  • No scale damage and resistant to dust and water

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Mitsubishi, Panasonic compatibility

  • RS485 communication

  • Mitsubishi, Panasonic  communication compatible

  • High noise resistance

  • Cable simplification (7-wire)

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Battery-buffered absolute position sensor

  • Absolute position sensing using a battery

  • Battery life: 5 to 10 years or more

  • No origin operation, no magnetic pole detection

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High resolution and speed

  • Resolution 0.73㎛

  • High repeatability of approximately ±10㎛ or less (depending on magnet condition)

  • Maximum speed 3m/sec or more(depending on a motor and a drive)

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Easy assembly and long stroke optimization

  • Distance between magnet and motor coder is 10mm or more

  • Easy to assemble, no surface machining for a scale

  • Best for long stroke (body connection)

  • LM guide, roller bearing applicable

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High environmental resistance

Resistant to dust and water

  • No scale damage due to shock or vibration.

  • Position sensing by mounting the encoder head directly on the coil unit without a linear scale

  • Detection of variation in magnetic flux density of the linear motor's permanent magnets using Hall sensors

  • Generation of sub-micron (1 μm-level) position data through high-resolution interpolation

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  • Absolute position sensing using a battery during power outages.

  • Low-power Hall sensors enable absolute position sensing, ensuring a battery life of 5–10 years or more.

  • Upon main power restoration, combines high-resolution position data with power outage data to transmit high-precision absolute position.

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  • Motorcoder and magnet tracks assembly tolerances

    • Air gap between motor magnet and sensor: Approximately 8–10 mm (varies by magnet)

    • Center deviation between magnet and sensor: Positioned at the magnet's center (no deviation allowed)

    • Height and misalignment deviation between magnet and sensor: ±1 mm

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  • You can view more videos in the Video menu.

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