| Fault Code | Description | Risk Level | Suggested Action | | :--- | :--- | :--- | :--- | | | Heatsink Temperature High (>85°C) | Medium – drive may derate | Clean cooling fan filter; check ambient temperature. | | A220 | Lifetime Warning – DC Bus Capacitors | High – plan replacement | Internal electrolytic capacitors drying out. Schedule drive replacement within 6 months. | | B001 | Parameter Checksum Error | Medium – parameters corrupted | Restore from backup file (.PRM or .PAR). | | B005 | Firmware Incompatibility | Critical | The power section firmware does not match control firmware. Contact Rexroth support. |
, an overcurrent fault in the power section of a secondary drive. A quick inspection revealed a frayed cable tucked behind a mounting bracket—a simple ground fault that had crippled the entire multi-axis system. rexroth ppcr221 fault codes full
controller, a high-performance multi-axis motion control unit used in industrial automation. Power-On Status and CPU Errors | Fault Code | Description | Risk Level