Cause : Inverter overload comes when drive has exceeded the inverter current or torque limits, and the delay defined with parameter 31.204 Inverter overload delay has elapsed. The fault condition is checked only when the generating power is more than 10% of the motor nominal power and the actual speed is greater than 5% of the motor synchronous speed.

An "Inverter Overload" fault "D106" in ABB ACS880 drive indicates that the drive's inverter section has experienced an overload condition. This can be due to various reasons such as excessive current draw, extended operation at high load, improper parameter settings, or even environmental factors.

1. Check the speed controller torque settings.
2. Check the torque, speed and power limit settings.