Danfoss VLT Alarm 57: AMT timeout

Danfoss Electrical Alarm Drive

Model: VLT 2800 / FC Series | Code: 57

Applicable Systems
FC-302 FC-301

Symptoms

AMT calculation took too long, possibly due to motor cable noise.

Possible Causes

  • AMT timeout

Troubleshooting Steps

  1. Step 1: Check motor cable shielding; reduce electrical noise; retry AMT.
    Fault resolved after action

How to Reset

Reset by: 1) Correct the fault condition. 2) Press RESET button or cycle power. 3) Verify fault does not recur.

Comments (0)

Share your experience to help others facing the same problem.

No comments yet. Be the first to share your experience!

Leave a Comment

Source: Danfoss FC Series Alarm Codes (agilectrl.com)

Category: Electrical

Published: 2026-09-25