OnAxis

Each magnetic encoder contains an integrated circuit that senses the angular position. The IC senses the angular position of a permanent magnet placed above it. The permanent magnet is diametrically polarized and of cylindrical shape.

Hall sensor technology detects the magnetic flux density distribution at the surface of the silicon. Hall sensors placed in a circular array around the center of the IC deliver a voltage representation of magnetic field distribution.

The sine and cosine voltage outputs from the sensor array vary with magnet position. The sine and cosine signals are then converted to absolute angle position with a fast flash interpolator.

This basic sensing technology can then be combined with further electronics to produce a wide range of output formats. Resolutions of up to 13 bit absolute (8192 counts per revolution incremental) are achieved with internal interpolation.

The ability of the encoder system to operate with a gap between the magnetic actuator and the encoder chip allows its incorporation into designs that need isolation of the moving elements.

RM22 rotary magnetic modular encoder

RM22 rotary magnetic modular encoder

  • Excellent immunity to IP68
  • Non-contact, frictionless design
  • High speed operation to 30,000 rpm
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RM36 rotary magnetic modular encoder

RM36 rotary magnetic modular encoder

  • Excellent immunity to IP68
  • Non-contact, frictionless design
  • High speed operation to 30,000 rpm
  • 36 mm diameter body
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RM08 super small non-contact rotary encoder

RM08 super small non-contact rotary encoder

  • Super small size – 8 mm diameter body
  • Non-contact, frictionless design
  • 3.3 V or 5 V power supply versions
  • High speed operation to 30,000 rpm
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RMB20 rotary magnetic module

RMB20 rotary magnetic module

  • 20 mm diameter circular module
  • 5 V power supply
  • High speed operation to 30,000 rpm
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RMB30 rotary magnetic module

RMB30 rotary magnetic module

  • 24 V and 5 V power supply versions
  • High speed operation to 30,000 rpm
  • Absolute - to 13 bit resolution (8,192 counts per revolution)
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RMB28 rotary magnetic module

RMB28 rotary magnetic module

  • 28 mm square module
  • Low cost for OEM integration
  • 24 V and 5 V power supply versions
  • High speed operation to 60,000 rpm
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RMF44 rotary magnetic module on metal flange

RMF44 rotary magnetic module on metal flange

  • Easy to install - with self locating design
  • Low cost for OEM integration
  • 24 V and 5 V power supply versions
  • High speed operation to 60,000 rpm
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RM44 - up to 13 bit encoder base unit

RM44 - up to 13 bit encoder base unit

  • Easy to install - with self locating design
  • Low cost for OEM integration
  • Fully sealed to IP68
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RM44 rotary encoder with external zeoring

RM44 rotary encoder with external zeoring

  • With external zeroing
  • Easy to install - with self locating design
  • Low cost for OEM integration
  • Fully sealed to IP68
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