Product Description:

The H2101200225AH is a rotary incremental encoder produced by Danaher within the Dynapar Encoders series. It provides position feedback for motion axes that only need one direction of count, making it useful for conveyor speed monitoring, pump drives, and other single-direction loops in industrial automation. The unit integrates a code disk, sensing electronics, and sealed cabling so that controllers receive consistent pulse trains without extra field assembly.

This model delivers a resolution of 120 PPR, allowing drive controllers to calculate shaft velocity or distance in coarse- to medium-resolution applications. A maximum mechanical speed of 10,000 RPM ensures the disk does not overspeed in fast-turning spindles, while the electrical system tracks transitions up to 100 kHz, matching the mechanical limit with sufficient margin for square-wave fidelity. Protection is provided by a NEMA 4/IP66 housing that blocks dust and powerful water jets, so outdoor washdown stations can use the encoder without additional covers. The signal interface is a single-ended open-collector output, enabling direct connection to PLC high-speed counters that include pull-up resistors and accept sink currents.

The encoder provides unidirectional feedback, producing pulses for motion in one rotational direction and simplifying control systems that do not require quadrature decoding. The hub clamps onto a 5/8 in shaft through a servo-mount flange, centering the disk accurately to minimize radial runout. Internal sealing and an external shaft seal keep contaminants away from the bearings, supporting operation from -40 °C up to +85 °C. The switching transistors can sink up to 40 mA, allowing compatible input cards to receive the signal when connected to a common pull-up rail. During startup, drag is limited to 3.0 oz-in, reducing the load imposed on small motors. A 10 ft sealed cable exits from the side, supplying power and pulse signals without detachable connectors that could loosen under vibration.