F12

HW OverCurrent

Allen-Bradley · PowerFlex 4 Adjustable Frequency AC Drive

What does F12 mean?

A hardware-level overcurrent condition has been detected, indicating an immediate excessive current draw. This could stem from incorrect programming, a severe motor overload, improper DC boost settings, or excessively high DC brake voltage.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Review parameter A081 [DC Brake Level] setting; ensure it is not configured for a value too high (max DriveAmps * 1.8).

  2. 4

    Inspect the motor and output wiring between the drive and motor for any short circuits or insulation damage.

Source: Allen-Bradley PowerFlex 4 Adjustable Frequency AC Drive
Open Manual (Page 15)