Cause : IGBT overheat comes when the Insulated Gate Bipolar Transistor (IGBT) modules within the drive are overheating. IGBTs are critical components that control the power delivered to the motor, and overheating can lead to drive malfunctions or damage.

"E14.00" fault in inovance MD800 drive indicate "IGBT overheat" condition. This means the drive might be operating beyond its rated capacity, causing excessive current flow and heat generation or insufficient airflow around the drive can hinder heat dissipation, leading to overheating.

Troubleshooting Steps:

1. Ensure Proper Cooling:

   • Check Ventilation: Verify that the drive has adequate ventilation and that cooling fans are operational. Clear any obstructions from air vents and ensure proper airflow around the drive.
   • Inspect Cooling Fans: Ensure that the cooling fans are working correctly and replace them if they are malfunctioning.

2. Monitor Ambient Temperature:

   • Check Ambient Conditions: Measure the ambient temperature where the drive is installed. Ensure that it is within the recommended operating range specified in the drive’s manual.
   • Improve Cooling: If the ambient temperature is too high, consider improving the cooling in the environment, such as using air conditioning or fans.

3. Evaluate Current Load:

   • Verify Load Conditions: Check if the motor is drawing excessive current or if there are any issues causing the drive to operate beyond its rated capacity. Reduce the load if necessary.
   • Check for Overloading: Ensure that the motor and drive are appropriately sized for the application to avoid excessive current draw.

4. Inspect IGBT Modules:

   • Check for Damage: Inspect the IGBT modules for any visible signs of damage or overheating. If damaged, the modules may need to be replaced.
   • Test Functionality: If possible, perform diagnostic tests to assess the condition of the IGBT modules.

5. Review and Adjust Drive Settings:

   • Check Current Limits: Verify and adjust the drive’s current limits and protection settings to ensure they are configured correctly for the motor and application.
   • Review Protection Settings: Ensure that the drive’s thermal protection settings are properly configured to prevent IGBT overheating.

6. Check Electrical Conditions:

   • Inspect Power Supply: Ensure that the power supply is stable and free from surges or imbalances that could affect the IGBT modules.
   • Verify Wiring: Check all electrical connections and wiring for signs of damage or incorrect installation.