Product Description

Danaher manufactures the HA725081920241. An example of a high-precision angular displacement measuring device that combines mechanical motion detection with optoelectronic sensing is the HA725081920241 incremental optical encoder. This encoder is an incremental optical and modulates a light beam between a light-emitting diode and a photodetector array using a revolving disk with alternating transparent and opaque segments. The disruption of the light path as the disk rotates produces pulse trains that are proportional to the angular movement of the shaft. This is relative location feedback as opposed to absolute encoders, which require an initial homing or indexing step to provide a reference point. The encoder’s signal processing ensures accurate pulse production as a function of rotational movement by high-fidelity photodetection and exact optical alignment.

The device’s movable resolution, which supports a pulse per revolution (PPR) range of 8192 to 10,000, is key to its flexibility. The encoder can be customized to applications with different resolution and response time requirements by emitting a user-definable number of pulses per full shaft revolution. High-performance automation and robotics require better motion control and higher feedback accuracy, which is achieved by the finer granularity of output pulses in high resolution. Two channels (A and B) in the quadrature output format are phase-shifted 90 electrical degrees apart, allowing phase relationship analysis to determine motion in both directions. For shaft indexing, the optional Index (Z) channel provides one pulse per revolution and acts as an absolute reference. System robustness under dynamic operating conditions is improved by the specified phasing tolerance of ±25°, which ensures the signal is always interpretable even with small mechanical or electrical deviations.

Both push-pull and differential line driver configurations are supported by the HA725081920241 encoder electrically and mechanically. The line driver version runs at 5 VDC and provides better signal integrity in noisy electrical environments or long transmission distances. The push-pull mode supports a wide supply voltage range (10-30 VDC) and is best for moderate cable lengths and easy interfaces. The push-pull and line driver modes provide current outputs of ±30mA and ±20mA, respectively, which are enough to drive logic circuits downstream. The encoder’s mechanical design can withstand axial and radial loads of 24 and 35 pounds, respectively, and a maximum operating speed of 10,000 RPM. It is housed in a NEMA 4/IP66 enclosure and operates from 0 to +70°C. The encoder’s environmental sealing prevents high-pressure water and particle ingress, making it suitable for harsh industrial applications that require longevity and accuracy.