OverVoltage

What does F5 mean?

This fault signals that the AC line voltage or the DC bus voltage has exceeded its maximum permissible level. High line voltage, transient conditions, or motor regeneration (motor acting as a generator during deceleration) are common causes. Overvoltage can damage drive components.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   If the fault occurs during deceleration, increase parameter P040 [Decel Time1] or A068 [Decel Time2] to extend the motor deceleration time.

2. 4

   Consider installing a dynamic brake option (resistor and chopper) if persistent regeneration is the root cause.