A-B Rockwell Automation 847T-PY26-RG01024. Incremental Encoder, 2" Diameter, Solid Shaft, 5PY Mounitng, 5/16 Diameter Extended Shaft, 8 30 V DC, 8 30V Line Driver (HTL), Radial Exit, MS 10 Pin w/ Mating Connector, A leads B, CW, Z gated with A, 1024 PPR