The Selema F1 ECO H7 is an AC servo drive rated at 4 A, 230 VAC with a 0.78 kW power rating, commonly used for precision motion control in industrial automation. Typical failure points for this class of drives include over‑temperature shutdowns due to fan or heat sink blockage, insulation breakdown leading to phase failures, and firmware corruption causing loss of communication or incorrect torque commands. First‑check diagnostics: verify the 230 VAC input voltage and confirm the drive’s internal power supply is within spec; inspect the cooling system for dust or obstruction and check all I/O terminals for proper continuity and no shorted contacts; review any stored error codes via the drive’s diagnostic port to pinpoint phase, overcurrent, or communication faults.[oss-gpt-20b]