Delta vTL fault code meaning
Delta / vTL
Series: AFE3000
T phase voltage open warning
active front end
Meaning: While stopped, a T phase voltage detection error occurs.
Possible causes
- Input supply voltage fluctuation is too large.
- Input power supply phase loss
- Phase voltage imbalance
- Loose input power supply wiring terminals
- 7-11
Source: AFE3000 Series User Manual (DELTA_IA-PQ_AFE3000_UM_TC_20260330) P101