INTERNAL FAULT (Unknown rating)

What does IF1 mean?

An internal fault has occurred due to an unknown rating. This suggests a fundamental internal issue within the drive's control or power section, making the drive unable to determine its operational parameters correctly.

• Internal hardware component failure within the drive's power or control section.
• Corrupted or incompatible firmware preventing the drive from determining its operational parameters.
• Severe internal data bus communication error between drive sub-components.
• Failed internal sensor providing incorrect or no feedback (e.g., current, voltage, temperature).

Click steps to track your progress.

1. 1

   1. Record all specific fault data displayed on the HMI or available via diagnostic parameters.

2. 2

   2. Perform a complete power cycle of the drive (disconnecting L1, L2, L3 for 5 minutes).

3. 3

   3. Inspect the drive's internal components for any visible damage, burnt marks, or loose connections (power off).

4. 4

   4. If multiple fault codes appear, prioritize investigation based on the first or most persistent fault.

5. 5

   5. Attempt to re-flash the drive's firmware using the manufacturer's specified service tool.