Power unit: Hardware current limit has responded too often

What does F30017 mean?

This fault occurs when the hardware current limitation in a specific phase (U, V, or W, indicated by r0949) has been activated excessively. This points to issues such as incorrect closed-loop control parameters, faults in the motor or power cables, excessively long power cables, high motor load, or a defective power unit. Repeated current limiting causes stress on components and leads to drive shutdowns.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Inspect power cable connections for tightness and continuity, and check cables for short-circuits or ground faults.

2. 4

   Verify that the length of the power cables does not exceed the maximum permissible length specified by the manufacturer.

3. 5

   If all other checks are clear, consider replacing the power unit as it may be defective.