Cause : DC link undervoltage comes when intermediate circuit DC voltage is not sufficient due to missing phase in supply voltage, blown fuse or rectifier bridge internal fault.

An AE0A fault code in your ABB ACS880 drive indicates a DC Link undervoltage fault.This fault signifies that the DC Link voltage has dropped below the minimum acceptable limits for the drive to operate correctly.

Note: This warning can be shown only when the IGBT supply unit is not modulating.

1. Check supply and fuses.
2. Check that parameter 95.1 Supply voltage is set according to the supply voltage in use.