Optical Encoders


High-precision IER3 and IERS3 optical encoders deliver two-channel quadrature signals and an additional index signal. They are highly precise due to the unique optical measuring principle. This measuring principle gives these encoders a strong edge in terms of accuracy and signal quality when compared to encoders with other measuring principles.


A dc micro motor or brushless dc servo motor can be positioned with a typical accuracy of 0.1 to 0.3 deg with the IER3 and IERS3, making them an ideal solution for a wide range of high precision positioning applications across markets.


Diameter compliant IER3 and IERS3 encoders are mechanically identical and compatible with the magnetic Faulhaber IE3 encoder. They lengthen the motors only from 15.5 to 18.5 mm.


Suitable for demanding applications such as those in:

  • Medical technology
  • laboratory automation
  • measuring technology
  • optical systems


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