Drive Overload
Allen-Bradley · PowerFlex 520-series Adjustable Frequency AC Drive
What does F064 mean?
This fault indicates that the drive's internal thermal model has detected a prolonged current draw exceeding its rated capacity, typically occurring under high load conditions. Continuous operation in an overload state will reduce the lifespan of the drive, generate excessive heat, and potentially damage internal components. This often signals that the drive is undersized for the application or there's an issue with the mechanical system.
Additional Steps
Steps 1–2 are listed in Priority Fix.
- 3
Check for mechanical issues in the driven equipment (e.g., worn bearings, misalignment, excessive friction) that could be causing excessive load on the motor.
- 4
Monitor the motor's actual current draw against its rated current to confirm overload conditions and evaluate the average and peak loads.