The Seidel DIGIFAS 7200 is a digital AC servo amplifier rated up to 30 kW, designed for brushless synchronous motors and normally powered directly from a three‑phase industrial mains via an integrated power supply. Common failure modes reported on the 7200 series include overheating of the internal IGBT modules (often due to inadequate ventilation or overcurrent), loss of communication on the RS232/RS485 interface leading to “no configuration” errors, and degradation of the built‑in protection relays causing frequent shutdowns. For a first‑pass check, verify the 400 V phase‑to‑phase supply voltage and ensure proper grounding; inspect the drive’s cooling fan and heatsink for dust or obstruction; then review the diagnostic LEDs or error log via the serial port to identify any fault codes before proceeding with component replacement.[oss-gpt-20b]