Internal fault – critical

What does F13.22 mean?

Encoder 1 is signaling a critical internal fault, meaning the encoder itself has detected a severe malfunction. This prevents the drive from receiving reliable position feedback and could lead to unsafe or uncontrolled operation.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   If no external causes are found, replace the encoder as it is internally defective.