The Advanced Drive Technology TM5‑015i‑1P is a three‑phase, 6 A IFT variable frequency drive (VFD) used in industrial motor control applications such as conveyor or pump drives. Common failure points for this class of VFDs include over‑temperature shutdown due to cooling fan failure, insulation breakdown causing phase-to-phase short circuits, and controller board faults that trigger error codes like “E20” (over‑current) or “E30” (communication loss). First‑check diagnostics should verify the 48 V DC input supply and ensure it is within ±10 % of spec; inspect the cooling fan and heat sink for dust buildup or mechanical blockage; and review the drive’s error log via its serial/USB interface to identify any recurring fault codes.[oss-gpt-20b]