53

AMA: Motor too big

Danfoss · VLT HVAC Drive High Power

What does 53 mean?

The connected motor is too large for the Automatic Motor Adaptation (AMA) function to operate successfully with the current drive sizing or parameter limits. This means the drive cannot accurately identify the motor's characteristics, leading to an inability to optimize control.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    If the motor is indeed too large for the drive, consider a larger drive or alternative commissioning methods.

Source: Danfoss VLT HVAC Drive High Power
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