AMI‑Elektronik 100/116 is a solid‑shaft incremental rotary encoder designed for industrial automation, offering up to 100 000 pulses per revolution and a 6–10 mm shaft diameter. Common failure points in this class include contact wear on the Hall sensor contacts or optical pickup, winding insulation breakdown under high vibration, and mechanical misalignment of the shaft causing signal loss. First‑check diagnostics: verify that the supply voltage matches the encoder’s rated range (typically 5–24 V DC), inspect for visible damage to the housing or wiring harness, confirm continuity across the output channels, and review any error codes from the host controller indicating missing or noisy pulses.[oss-gpt-20b]