OverVoltage

What does F5 mean?

This fault indicates that the DC bus voltage within the drive has exceeded its maximum allowable limit. Common causes include high incoming AC line voltage, transient voltage spikes, or regenerative energy from the motor, especially during rapid deceleration. Regenerative energy occurs when the motor acts as a generator, feeding power back into the drive. Ignoring this fault can lead to premature component degradation or catastrophic failure of the drive's power section.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Consider installing a dynamic braking resistor option if motor regeneration is significant and cannot be mitigated by extending deceleration times.