AMA internal fault

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An internal fault occurred during the Automatic Motor Adaptation (AMA) process. This indicates a problem within the drive's control logic or measurement system during motor characterization. Repeated attempts could overheat the motor, and the underlying fault needs to be addressed.

• Component failure on the drive's control board affecting internal current or voltage measurement during AMA.
• Firmware anomaly or bug within the AMA algorithm that triggers an unhandled internal error.
• Corrupted parameter settings in the drive's non-volatile memory impacting the internal AMA logic.
• Faulty internal sensor (e.g., current sensor) leading to inaccurate feedback during motor characterization.
• Transient power disturbance or electrical noise affecting the drive's internal calculations during the AMA sequence.

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1. 1

   Perform a controlled power cycle of the frequency converter, wait at least 30 seconds, and attempt AMA again.

2. 2

   Initialize the drive to factory default settings (P14-22 Load Parameters), re-enter all motor data, and retry AMA.

3. 3

   Check the drive's event log (P15-30 Fault Log) for any preceding or co-occurring faults that might indicate a hardware issue.

4. 4

   Inspect the control card for any visible signs of damage such as burnt components, swelling capacitors, or loose connectors.

5. 5

   If the fault persists after multiple attempts and resets, consider replacing the control card or the entire drive.