VFD faults can be classified into two categories: auto resettable faults and what type?

The classification of Variable Frequency Drive (VFD) faults into auto resettable faults and non-resettable faults is essential for effective troubleshooting and maintenance. Non-resettable faults typically indicate a condition that requires immediate attention and intervention, as they signal a serious issue that cannot be automatically corrected by the VFD itself.

When a non-resettable fault occurs, the system will usually stop operating to prevent damage to the motor or drive. Examples of these types of faults include overload situations, phase loss, and other critical failures that compromise the operational integrity of the VFD circuit. Addressing these faults often involves manual inspections, repairs, or component replacements to ensure the system can resume normal operation.

This framework is beneficial for understanding the different nature of faults in VFDs. It helps operators and maintenance personnel distinguish between faults that can self-correct and those requiring intervention, enhancing the reliability and operational efficiency of industrial systems. The other classifications do not accurately represent this critical fault type that necessitates a manual resolution.