Power unit: Overtemperature heat sink AC inverter

What does A05000 mean?

The alarm threshold for overtemperature at the AC inverter's heat sink has been reached. This indicates that the power unit is operating at an elevated temperature. If the temperature increases by an additional 5 K, it will trigger fault F30004, potentially leading to a drive shutdown and component damage.

Complete Troubleshooting Guide

1. 1

   Verify that the ambient temperature around the power unit is within the defined operational limit values.

2. 2

   Evaluate the load conditions and the load duty cycle to ensure they are appropriately dimensioned for the inverter's cooling capacity.

3. 3

   Inspect the cooling system, including fans and heatsink fins, to ensure it is functioning correctly and is free from obstructions.