Delta dCNB fault code meaning
Delta / dCNB
Series: AFE3000
Neutral-point imbalance warning
active front end
Meaning: While stopped, the voltage difference between the upper and lower capacitors exceeds the imbalance level.
Possible causes
- Supply voltage error
- Frequent load fluctuations
- 7-8
Source: AFE3000 Series User Manual (DELTA_IA-PQ_AFE3000_UM_TC_20260330) P98