The message "PFES" Position following warning in Schneider Electric ATV610 drive indicates a potential issue with the drive's ability to precisely follow the programmed position reference for a motor. While it's not necessarily a critical fault causing an immediate shutdown, it's a warning that shouldn't be ignored.

The "PFES Position following warning" on a Schneider ATV610 drive indicates that there is an issue with the position feedback system, typically used in applications where precise motor positioning is critical.

1. This warning suggests that the drive is unable to correctly follow the commanded position, which can be due to several factors such as misalignment, sensor issues, or incorrect parameter settings.
2. Check the condition and alignment of position feedback sensors (e.g., encoders, resolvers).
3. Ensure all connections between the position feedback devices and the drive are secure and free from damage or corrosion.
4. Verify that the parameters related to position control are correctly configured. This includes settings for feedback devices, control loop parameters, and position limits.