Delta LVN fault code meaning
Delta / LVN
Series: AFE3000
DC undervoltage during operation
active front end
Meaning: The voltage on the internal high-voltage DC side was detected below the setting during operation.
Possible causes
- Power failure occurred
- Supply voltage fluctuation
- Power supply capacity too small
- The supply voltage becomes abnormally low when the load increases. Increase the power supply capacity.
- Sudden load change
- Check whether a large-capacity load starts
- Increase the capacity of the power supply system equipment.
- 7-30
Source: AFE3000 Series User Manual (DELTA_IA-PQ_AFE3000_UM_TC_20260330) P120