Selecting High-Precision Rotary Encoders for Traction Elevator Motors

Closed-loop motor control relies directly on high-resolution rotary encoders (such as Heidenhain ECN1313 and ECN1387) for precise shaft speed and car positioning. In gearless permanent magnet synchronous machines, encoder pulse feedback ensures whisper-quiet acceleration, zero rollback during mechanical brake release, and floor leveling accuracy within ±2mm. Learn how to verify shielding against electromagnetic interference (EMI) and avoid common grounding pitfalls.