Power unit: Overtemperature thermal model

What does A05006 mean?

This alarm indicates that the thermal model for blocksize power units has detected an excessive temperature difference between the semiconductor chip and its heat sink. While it often resolves automatically, if the temperature continues to rise, it can lead to fault F30024. Sustained high temperature differences can reduce the lifespan of power unit components.

Complete Troubleshooting Guide

1. 1

   Observe the drive's operation; the alarm should automatically clear once the temperature difference between the chip and heat sink falls below the limit.

2. 2

   If the alarm persists or temperature continues to rise, check for insufficient cooling, such as blocked heatsinks or fan malfunction.

3. 3

   Evaluate the motor load and duty cycle to ensure the power unit is not continuously overloaded.