Product Description:

The HA6251500061018 is an incremental optical encoder manufactured by Danaher as part of the Dynapar Encoders series. Mounted on a motor shaft or lead screw, it converts rotary motion into electrical information for PLCs and servo drives. The optical pickup produces two square-wave channels in a quadrature (AB) format, allowing controllers to track direction as well as position. By supplying clean incremental feedback, the unit supports closed-loop speed regulation and positioning duties in packaging lines, conveyors, and general automation equipment.

The output resolution is 1500 PPR, which divides each revolution into 1,500 discrete counts for moderate accuracy requirements. Reliable tracking continues up to 5000 rpm, so the disc may spin quickly without pulse dropout. Internal comparators sustain a minimum frequency response of 100 kHz, matching high-speed counter modules used in modern motion controllers. Edge fidelity is protected by a rise and fall time of less than 1 µs, limiting timing errors during rapid transitions. Protection from dust and washdown fluids is provided by the NEMA 4/IP66 enclosure rating. Within each cycle, the A and B channels maintain quadrature phasing of 90° ±22.5° electrical, and duty symmetry stays within 180° ±18°, ensuring predictable interpolation accuracy at the drive.

The encoder tolerates an axial shaft load of 40 lb and a radial shaft load of 35 lb, allowing direct coupling to belts or pulleys without additional support bearings. Shock resistance is rated at 50 G for 11 ms, so the optical assembly can withstand abrupt machine stops. Startup drag is limited to a starting torque of 2.5 oz-in, and the code disc’s moment of inertia is 3.0 × 10⁻⁴ oz-in-s², which minimizes acceleration losses in servomotor applications. Despite the sealed housing, the overall mass is only 1.5 lb, keeping the weight added to the shaft minimal.