Speed controller autotuning

What does AF90 mean?

The automatic tuning routine for the speed controller did not complete successfully, potentially due to interruption or incorrect prerequisites. This prevents the drive from optimally controlling motor speed, leading to poor performance, instability, or inefficient operation.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   If the drive was stopped prematurely (aux code 0000), repeat the autotune routine until it finishes without interruption.

2. 4

   If the drive started but was not ready (aux code 0001), verify all drive conditions and commands before attempting autotune again.