F126

NonRecoverablErr

Allen-Bradley · PowerFlex 520-series Adjustable Frequency AC Drive

What does F126 mean?

A non-recoverable firmware or hardware error has been detected, causing the drive to automatically stop and reset. This is a severe internal issue that the drive cannot self-correct, indicating persistent damage to the hardware or a critical, unrecoverable software fault.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    If the fault cannot be cleared, replace the entire drive or the control module, as the error is persistent and beyond field recovery.

Source: Allen-Bradley PowerFlex 520-series Adjustable Frequency AC Drive
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