Cause: Input Overheating comes when the AFE brick temperature is too high. The drive is being pushed beyond its rated capacity, leading to excessive current draw and overheating.

"IHF" fault in Schneider ATV950 drive indicate an "input Overheating" condition. This means the drive's input power section is experiencing excessive heat.

Common Causes of IHF Fault

1. Overload: The drive is being pushed beyond its rated capacity, leading to excessive current draw and overheating.
2. Insufficient cooling: The drive's cooling system might not be functioning properly.
3. Component failure: A component within the input power section might be faulty.
4. Environmental factors: High ambient temperature can contribute to overheating.

Troubleshooting Steps:

1. Reduce Load: If possible, temporarily reduce the load on the drive to lower current consumption.
2. Check Cooling System: Ensure the drive's cooling fans are operating correctly and there are no obstructions blocking airflow.
3. Inspect for Overheating Components: Look for signs of overheating, such as discoloration or burning, on components within the drive.
4. Verify Power Supply: Check for any issues with the incoming power supply, such as voltage fluctuations or insufficient.