The Ascom Energy Systems D0026627 5CPD45015300 is a high‑current industrial DC power supply used to feed servo drives and motor controllers in automation lines. Common failure modes for this model include capacitor degradation, transformer winding insulation breakdown, and overheating of the switching MOSFETs or rectifier diodes due to over‑voltage spikes. Begin troubleshooting by verifying input voltage integrity, checking output rails with a multimeter, inspecting for burnt components or swollen electrolytics, and reviewing any error logs from the connected controller for abnormal current or temperature readings. If faults are confirmed, replace failed capacitors, rectify damaged switching devices, and re‑calibrate the supply’s control loop before retesting.[oss-gpt-20b]