bLF

Brake Control Fault

Schneider Electric · Altivar Machine ATV320 Variable Speed Drive

What does bLF mean?

Indicates a loss of one or more phases (3-phases) to the motor's brake. This fault can lead to uncontrolled motor movement if the brake fails to engage or disengage properly, posing a significant safety risk.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Check the brake contactor or relay for proper mechanical and electrical operation.

  2. 4

    Inspect the brake mechanism for physical obstruction, wear, or damage that prevents proper function.

Source: Schneider Electric Altivar Machine ATV320 Variable Speed Drive
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