AI2512123X32X14 Danaher
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The Danaher AI2512123X32X14 is part of the Dynapar Encoders series and features a single-turn and multi-turn resolution of 12 bit each. The encoder offers absolute accuracy of ±0.01 degrees and repeatability of ±0.002 degrees, with a peak shaft speed of 12,000 RPM. It operates with a multiturn current of 250 mA and weighs 14.1 ounces.
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Product Description:
The AI2512123X32X14 is a hollow-shaft absolute rotary encoder manufactured by Danaher and supplied within the Dynapar Encoders series. Intended for industrial automation, it mounts directly on a drive or motor shaft and converts angular position into a digital word that can be read by motion controllers for closed-loop positioning and speed regulation. By integrating multi-turn counting with high single-turn granularity, the unit eliminates the need for homing routines after power cycles and supports synchronized axes in packaging, robotics, and material-handling equipment.
The encoder has an absolute accuracy of ±0.01°, which indicates the maximum deviation between the reported and actual shaft angles, while its repeatability of ±0.002° indicates the variation between successive readings under identical conditions. Integral linearity is limited to ±0.5 LSB, maintaining uniform code progression throughout the measurement range. Continuous operation is permitted at speeds up to 10,000 rpm, and brief excursions up to 12,000 rpm can be tolerated without mechanical damage or signal loss. A starting torque of <1.4 in-oz minimizes the load placed on small servo spindles. The hub shaft accepts axial movement of ±1.5 mm, radial displacement of ±0.2 mm, and an insertion depth of up to 20 mm. These tolerances allow direct coupling to lightly guided shafts in compact industrial machines.
Multi-turn tracking provides a resolution of 12 bits, and the counter electronics draw only 250 mA, making the device suitable for low-power fieldbus connections. Within one revolution, the single-turn section provides a resolution of 12 bits, while a binary output code presents the position data without Gray-code conversion overhead. The mounting interface uses a bolt circle of 63 mm, which matches common motor end bells and supports direct installation. The encoder weighs 14.1 oz, allowing standard flange hardware to support it without adding substantial mass to the assembly. Its hollow-shaft arrangement avoids the need for an external shaft coupling and reduces the axial space required around the motor. The permitted shaft movement also helps accommodate minor installation offsets without placing excessive mechanical stress on the encoder bearings.
