Danfoss VLT Alarm 5: High voltage warning

Danfoss Electrical Alarm/Warning Drive

Model: VLT 2800 / FC Series | Code: 5

Applicable Systems
FC-302 FC-301

Symptoms

DC bus voltage (UDC) above voltage warning level.

Possible Causes

  • High voltage warning

Troubleshooting Steps

  1. Step 1: Check if supply voltage is too high; extend deceleration time if motor frequency drops too fast.
    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

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Source: Danfoss VLT 2800 Manual (sinodrive.com)

Category: Electrical