The Perma‑Drive 230TR‑04/U2 Converter is a high‑power DC motor drive converter used in industrial servo and conveyor applications, typically rated around 15–20 kW with a 400 V input range. Common failure modes for this class of converters include degraded capacitors on the power stage, burnt MOSFETs or IGBTs due to overcurrent/overtemperature, and insulation breakdown between the high‑voltage bus and chassis. First‑check diagnostics: verify that the input voltage is within spec and stable; inspect the output bus for visible arcing or discoloration; check all electrolytic capacitors for bulging or leakage; and review any diagnostic LEDs or error codes on the drive’s control panel for indications of shorted power devices or thermal shutdowns.[oss-gpt-20b]