F015

Load Loss

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

What does F015 mean?

The output torque current has fallen below a programmed minimum level (A490 [Load Loss Level]) for a duration longer than the set time (A491 [Load Loss Time]). This indicates that the mechanical load on the motor has been lost or significantly reduced, possibly due to a broken belt, coupling failure, or pump cavitation.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Review and adjust the A490 [Load Loss Level] and A491 [Load Loss Time] parameters to ensure they are appropriate for the application's normal operating and unloaded conditions.

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