Delta ULD fault code meaning
Delta / ULD
Series: VP3000
Light load
AC motor drive
Meaning: The load is below the user-defined load curve, triggering underload protection.
Possible causes
- Incorrect trigger condition setting
Source: VP3000 Series User Manual (DELTA_IA-MDS_VP3000_UM_TC_20250523) P435
Series: VP3000-E
Light load
AC motor drive
Meaning: The load is below the user-defined load curve, triggering underload protection.
Possible causes
- Incorrect trigger condition setting
Source: VP3000-E & VP3000-EHS User Manual (DELTA_IA-MDS_VP3000-E-VP3000-EHS_UM_SC_20260306) P400