Design Engineering

Hybrid POSITAL rotary encoders combine incremental and absolute functionality


General DPN

POSITAL has introduced new models of its versatile IXARC magnetic encoders that combine incremental and absolute rotation measurement capabilities in a single, compact and highly robust package.

Absolute encoders provide a control system with an accurate report of the rotational angle and rotation-count at a specific point in time, which makes them ideal for many machinery positioning tasks.

Incremental encoders provide a signal pulse each time the encoder shaft rotates by a specified angle.

Their dynamic response makes them a good choice for monitoring rotational speed and direction.  “Combining both measurement capabilities in a single device provides control system designers with extra flexibility,” underlines POSITAL product manager Chintan Doshi.

“Moreover, the incremental signal can be used as a ‘heartbeat’ that confirms that the sensor is functioning normally.” Because the new IXARC hybrid encoders are based on POSITAL’s high-performance magnetic measurement technology, they offer a unique combination of accuracy, shock/dust/moisture resistance and compact size.


IXARC hybrid incremental + absolute rotary encoders have communications interfaces that support both measurement modes: RS 422, HTL or TTL for incremental readings and SSI for absolute measurements.

Available multi-turn versions can count up to 64,000 revolutions while incremental measurements have resolutions as high as 16,384 pulses per revolution.

Like other POSITAL sensors, the new IXARC hybrid incremental + absolute encoders are available with multiple options for housing size and materials, flange configuration, shaft type and diameter, connection/wiring type and level of environmental protection – up to IP67.

POSITAL’s online product finder tool helps users to quickly and efficiently identify products that will meet their specific requirements.


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