The B&R ACOPOS P3 8EI8X8HWT0.0B001 is a compact three‑axis servo drive with integrated SafeMOTION safety functions and a modular cooling concept that can operate without active fan cooling. Common failure points for this model include overheating of the power stage (especially when using feed‑through heat sinks), degradation of the internal MOSFETs under high current spikes, and loss of encoder interface integrity due to connector wear or electrostatic discharge. Initial checks should verify 3×200–480 VAC input voltage and continuity of the power supply rails, inspect all connectors for corrosion or looseness, and review the drive’s diagnostic LED status or error codes (e.g., I/O fault, over‑temperature).[oss-gpt-20b]