Danfoss VLT Alarm 50: Auto tuning failed

Danfoss Electrical Alarm Drive

Model: VLT 2800 / FC Series | Code: 50

Applicable Systems
FC-302 FC-301

Symptoms

AMT (Automatic Motor Tuning) calculation failed - Rs value out of range.

Possible Causes

  • Auto tuning failed

Troubleshooting Steps

  1. Step 1: Check motor data settings; verify motor connection; retry auto-tuning.
    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.

Source: Danfoss VLT 2800 Manual (sinodrive.com)

Category: Electrical