Atn1
Auto Tune In Process
Schindler · Altivar 212 Variable Frequency Drive
What does Atn1 mean?
This alarm indicates that the Altivar 212 drive is currently executing an auto-tuning procedure. It is a normal operational message and typically clears automatically upon completion of the tuning process.
Common Causes
- Auto-tuning process is active.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Observe the drive; the message is normal if it disappears after a few seconds upon auto-tuning completion.
Verified technical data. Last updated: March 2026
Related Faults
Source: Schindler Altivar 212 Variable Frequency Drive