The Axor B17 Super Drive is a brushless AC servo‑drive module rated for motors up to ~20 Nm, featuring an integrated four‑quadrant converter, sinusoidal output, and built‑in power supply with braking circuit. Common failure points in this class include internal power supply degradation (transformer/rectifier), overheating of the drive core or IGBT modules, encoder/resolver mis‑alignment or loss of feedback, and fault condition locking due to overcurrent or short‑circuit protection tripping. First‑check diagnostics: verify input voltage and phase balance, inspect for visible signs of thermal damage or component failure, confirm encoder resolution and signal integrity, and review the drive’s diagnostic LEDs or error code display for stored faults.[oss-gpt-20b]