Danfoss VLT Alarm 52: AMT motor phase fault

Danfoss Electrical Alarm Drive

Model: VLT 2800 / FC Series | Code: 52

Applicable Systems
FC-302 FC-301

Symptoms

Motor current too low in at least one phase during AMT.

Possible Causes

  • AMT motor phase fault

Troubleshooting Steps

  1. Step 1: Check motor cable connection on all phases; verify motor winding.
    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.

Related Danfoss Fault Codes

Source: Danfoss VLT 2800 Manual (sinodrive.com)

Category: Electrical