Delta SDfu fault code meaning

Series: VP3000

Insufficient memory card storage space

AC motor drive

Meaning: The memory card capacity is nearly exhausted. The recorder function will be disabled.

Possible causes

• Memory card usage has reached 99%
• 3. If there are too many Log files, delete unnecessary files before use.
• The recorder function has stored Log files, and there are no
• Temp files can be overwritten automatically.

Source: VP3000 Series User Manual (DELTA_IA-MDS_VP3000_UM_TC_20250523) P521