Delta SPLV fault code meaning

Delta / SPLV

Series: VP3000

SPS model undervoltage

AC motor drive

Meaning: The SPS model detected that the DC voltage was below parameter H1-04 (the source wording preceding "DC voltage" is unclear).

Possible causes

Power failure occurred
Supply voltage fluctuation
Check whether a large-capacity motor is starting.
Increase the capacity of the power supply system equipment.
Load too large

Source: VP3000 Series User Manual (DELTA_IA-MDS_VP3000_UM_TC_20250523) P437