Overvoltage During Deceleration

What does ObF mean?

This fault occurs when the DC bus voltage rises above its safe limit during motor deceleration, typically due to kinetic energy being regenerated back to the drive from a sudden stop or an overhauling load. Without proper energy dissipation, this can damage the drive's DC bus components.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Activate the 'brA' function (if available and compatible with the application) to utilize advanced braking capabilities.