The Allen‑Bradley 1305 is an adjustable‑frequency AC drive (0.37–4 kW) used to control three‑phase induction motors in industrial applications. Common failure modes include overvoltage trips when supply exceeds the drive rating, overheating of brake resistors with dynamic braking, and insulation breakdown from prolonged exposure to high ambient temperatures or voltage spikes. For troubleshooting, first verify that the input voltage is within spec and check for any tripped over‑current or over‑voltage protection relays; next inspect the motor wiring and output contacts for signs of arcing or loose connections; finally review the drive’s diagnostic logs or error codes via its HMI or communication interface.[oss-gpt-20b]