NEC ASU05A Servo Driver

NEC ASU05A is an AC servo driver designed for industrial motion control, typically powered from a 200‑230 VAC three‑phase supply and driving standard AC servo motors. Common failure points in this class include over‑current protection tripping, phase loss or imbalance, insulation breakdown of the motor winding contacts, and degradation of the internal power MOSFETs or IGBT modules. Initial diagnostics should verify proper line voltage and phase balance, inspect for visible burn marks or component damage on the driver board, and review any fault codes or alarm outputs in the controller interface.[oss-gpt-20b]

Need your NEC repaired or tested?

We specialize in the repair and refurbishment of high-end industrial control electronics and power systems like this unit.

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