AMA internal fault

What does ALARM 58 mean?

An internal fault occurred within the frequency converter during the Automatic Motor Adaptation (AMA) process. This suggests a problem with the drive's internal diagnostics or control logic, preventing accurate motor parameter identification.

• Drive internal hardware component failure (e.g., current sensor, control board component, power module).
• Corrupted firmware or software error within the drive's control logic during the AMA sequence.
• Excessive electrical noise on the control signals or power bus during AMA, interfering with diagnostics.
• Overheating of internal components during repeated AMA attempts or in high ambient temperatures.
• Incompatible control card and power card combination, causing an internal communication error.

Click steps to track your progress.

1. 1

   Power cycle the frequency converter (turn off and on mains supply) and retry the AMA process.

2. 2

   Check for proper grounding of the drive and motor, and ensure cable shielding is correctly terminated.

3. 3

   Verify the ambient temperature around the frequency converter is within its specified operating range.

4. 4

   Attempt to update the drive's firmware if a newer version is available and applicable.

5. 5

   If the fault persists after basic troubleshooting, replacement of the frequency converter or control card is likely required.