Product Description:

The AI2512120092F is an absolute rotary encoder built by Danaher for the Dynapar Encoders series. It translates shaft rotation into discrete position words so motion controllers can maintain accurate axis alignment across power cycles in packaging, material-handling, and indexing equipment. Single-turn and multi-turn measuring tracks are combined in one housing, allowing the device to report both the instantaneous angle and total number of revolutions without external batteries or mechanical stops.

The communication layer uses a DeviceNet V2.0 interface, accessed through a single M12 5-pole connector that simplifies wiring on distributed I/O networks. The electronics draw 250 mA of current from the bus. Position data are delivered in binary code with a per-revolution resolution of 12 bits, while the multi-turn counter extends the measuring range over 4,096 revolutions. Mechanical precision is supported by an absolute accuracy of ±0.01°, while linearity stays within ±½ LSB. The code wheel can rotate safely at up to 10,000 rpm, and a servo mounting flange maintains concentric alignment. An IP64 enclosure protects the 72.3 mm-long body against dust and water spray. The compact housing allows the encoder to fit into tightly arranged machinery where space around the shaft and cable connection is limited.

The bearing design provides ±0.002° of mechanical repeatability, allowing print-registration drives to return to the same line with minimal position variation. Startup friction is low, requiring less than 1.4 in-oz of torque, so small servo motors can drive the unit without excessive mechanical load. A 6 mm solid shaft couples directly to machine spindles, and the encoder weighs 400 g, minimizing cantilever forces on delicate assemblies. Threaded fasteners secure the aluminum housing against frame vibration, while the multi-turn measuring system preserves position information through power interruptions.