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ENI58IL Incremental Rotary Encoders—BlueBeam Technology Brings Best-in-Class Accuracy

2018-03-21

Incremental rotary encoder ENI58IL featuring BlueBeam technology
BlueBeam technology equips industry-standard rotary encoders for use in high-end applications …

As part of its new rotary encoder series ENI58IL, Pepperl+Fuchs is introducing “BlueBeam” Technology. For the first time, this technoogy allows us to offer a portfolio of standard industry rotary encoders with the precision required for rotational speeds of up to 12,000 RPM. This is achieved by implementing a blue emitter LED and the corresponding receiver diodes. When used in conjunction with a powerful sensing chip, a highly efficient utilization of light is possible.


New benchmark for signal quality of incremental rotary encoders

“Compared to the long-wave infrared light that is typically used in conventional rotary encoders, the blue light from the new emitter LED  has a shorter wavelength while at the same time featuring identical splitting width. This allows sharper imaging,” explains Stefan Horvatic, Head of Product Management at Pepperl+Fuchs Drehgeber GmbH. Due to the optimized functional principle, users can expect a new benchmark for signal quality. “With BlueBeam Technology, we also reduce the tolerance of phase position A:B to far below 10 %,” Horvatic adds. Compared to the values that can be reached with conventional infrared technology, this more than doubles the signal quality.

Because the high-frequency sampling is less prone to interference, BlueBeam Technology also keeps signals stable when exposed to mechanical force like shock and vibration. Another advantage is the improved calibration of the code disk, which goes above and beyond standard manufacturing procedures. During the production of ENI58IL rotary encoders, the precise insertion of the disk is verified on a microscopic level. This step leads to improved absolute accuracy for applications in which even the smallest deviations cause a noticeable loss of performance.



BlueBeam Technology comprises a blue emitter LED and the corresponding receiver diodes.

Incremental rotary encoder with interlocked bearings

In addition to the high measuring quality achieved with BlueBeam Technology, the ENI58IL series also sets itself apart in terms of reliability and durability: interlocked bearings withstand high loads and protect the ball bearing. Special EMC circuit protection prevents damage from electromagnetic interference. “Global use of rotary encoders often entails requirements that surpass minimum CE standards. For that reason, we quadrupled regular test levels to ensure accurate operation even under the most challenging conditions,” Horvatic says.


Versatility bundled into one rotary encoder portfolio

Due to one-piece flow production, the ENI58IL incremental rotary encoders can be purchased in quantities as low as  “1” and with a wide variety of features. Along these lines, various types of shafts (solid shaft, hollow shaft, recessed hollow shaft), flanges, (clamping, servo, square) and connections (axial and radial M23 or M12) are available. “With the ENI58IL series, we're introducing a well-thought-out portfolio of industry-standard encoders covering applications that up to now would have required special devices,” Horvatic explains.


At a glance

  • BlueBeam Technology: unmatched precision even at rotational speeds up to 12,000 rpm 
  • A complete portfolio of shaft, flange, and connection options offers the optimal solution for a wide range of applications
  • Heavy-duty design with interlocked bearings withstands high bearing loads and ensures long service life
  • High shock and vibration resistance paired with EMC circuit protection for maximum system and process reliability

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