HA725081920241 Danaher
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The Danaher HA725081920241 is part of the Dynapar Encoders series and features a flange mounting with a side-mount connector. It supports a maximum shaft speed of 10,000 RPM and offers a resolution of 8192 PPR with incremental optical signal code. This encoder has an output signal of 5 V line driver, differential output type, and an enclosure rating of NEMA4/IP66.
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Product Description:
The HA725081920241 is an incremental optical encoder produced by Danaher for the Dynapar Encoders series. It attaches to machinery through a flange mount and accepts a 3/8-inch shaft, while the electrical connector is positioned on the side for streamlined cable routing. By translating shaft motion into two phased square-wave channels, the unit supplies real-time position and velocity data to servo drives and PLC counters, supporting precise feedback in packaging, printing, and automated assembly lines. Its incremental design allows the connected controller to determine the direction and amount of shaft rotation from the channel transitions.
Operational power is supplied at 5 VDC ±10%, aligning with logic-level control systems. The emitter and receiver electronics drive a 5 V line-driver output that can source or sink up to ±20 mA, enabling noise-resistant transmission over long differential pairs. Within each mechanical turn, the code wheel generates 8192 PPR, so controllers receive fine angular increments of 0.044° before interpolation. Correct quadrature spacing is maintained at 90° ±25° electrical, ensuring reliable edge decoding. The differential channels maintain the correct phase relationship, with channel A leading channel B when the shaft turns counterclockwise. This phase relationship allows the receiving control system to identify rotational direction without a separate direction signal.
A maximum mechanical speed of 10,000 rpm keeps the encoder usable in high-speed spindles, while the internal optics and electronics track transitions at a minimum frequency of 300 kHz. The housing carries a NEMA 4/IP66 rating, sealing the bearings and electronics against dust, water jets, and washdown fluids encountered in food-processing, textile, or outdoor equipment. The channel duty factor remains within 180° ±25° electrical, providing balanced high and low intervals for accurate velocity calculations. The low rotor inertia of 2.83 × 10-4 oz-in-sec² minimizes the load placed on miniature motors during rapid acceleration and deceleration. The differential output also rejects common-mode interference on long cable runs, helping preserve signal integrity near motors, contactors, and other sources of electrical noise.
