Magnetic Rotary Encoder

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Designed specifically for use in tough ambient conditions

Sensor Technology

Magnetic Rotary Encoder
Magnetic Rotary Encoder

The new ENA58IL magnetic rotary encoder from Pepperl+Fuchs is designed specifically for use in tough ambient conditions, this next generation of encoders combines precision and high-speed resolution in a compact design. Delivering an accuracy of <0.1°, the new magnetic absolute rotary encoder takes precision to a whole new level. Thanks to its short cycle time of less than 80 microseconds, the sensor is ideal for dynamic process applications. Another key advantage of magnetic rotary encoder technology is its noncontact detection principle, which eliminates the need for glass disks used in pulse generation. Magnetic rotary encoders have no mechanical gearing, so there's no unpredictable wear. They are unaffected by environmental influences and are completely maintenance-free. And because there are no mechanical gears, housings are more compact, opening up numerous potential applications. Interfaces for EtherCAT, PROFINET, and SSI ensure seamless communication to the controller.

Hall Effect and Wiegand Effect combined
The encoder is the first device of its kind to combine two electromagnetic principles in a single rotary encoder: the Hall effect and the Wiegand effect. It is this combination that makes the sensor insusceptible to wear, while ensuring a high level of reliability and robustness, even under extreme conditions. Boasting accuracies up to <0.1°-a figure not previously achieved by magnetic rotary encoders-and resolution up to 16 bit single turn and 16 bit multiturn the encoder takes flexibility and performance to new heights. And with an external diameter of 58 mm, the sensor can also be integrated into equipment where there is only very little space.

Intrinsic Power Generation Safeguards Position Feedback
When a permanent magnetic field near the Wiegand sensor is rotated, it generates a change in the direction of the magnetic field in the core of the Wiegand sensor, and in turn, creates an induction voltage in the coil around the sensor. In this way energy is transformed and used to supply power to the electronics to enable counting of the shaft revolutions. This eliminates the need for an internal battery to supply power to the electronics and means that the rotary encoders will not lose full-turn rotational data when power is removed. Accurate position values are available after power is reapplied. ENA58IL series rotary encoders can be used in a wide range of areas, such as filling plants, printing presses, and industrial robots.

Posted on December 2, 2014 - (797 views)
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Pepperl+Fuchs GmbH
Div. Factory Automation Lillienthalstr. 200
68307 Mannheim - Germany
+49-621-776-1111
+49-621-776-271111
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