Nikki-Denso Actus NPSA-202MU Servo Drive

Nikki‑Denso Actus NPSA‑202MU is an AC servo drive that provides variable frequency output for induction or brushless motors, typically used in CNC and linear motion systems. Common failure modes for this class include power supply over‑voltage damage to the IGBT/IGBT driver board, insulation breakdown between high‑voltage windings, and overheating of the motor controller due to inadequate cooling or fan failure. Initial checks should verify input voltage stability and correct phase sequence, inspect the drive PCB for burn marks or swollen capacitors, and confirm that all output terminals are properly connected and free from corrosion.[oss-gpt-20b] Post Comment

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