ABB ACS550-01 / ACS550-U1 Error 6: DC UNDERVOLT

ACS550-01/U1 drive · taken from the manufacturer’s manual, pages cited

Fault code6

DC UNDERVOLT happens when intermediate circuit DC voltage is insufficient. The manual's first action is: “Check for and correct: • Missing phase in the input power supply. • Blown fuse. • Undervoltage on mains.”

Model
ABB ACS550-01 / ACS550-U1
Display shows
DC UNDERVOLT (6)
Type
Fault code
Source
Manual p. 245

What 6 means

DC UNDERVOLT p. 261

Common causes

  • Intermediate circuit DC voltage is not sufficient. p. 261

What to do

  1. Check for and correct: • Missing phase in the input power supply. • Blown fuse. • Undervoltage on mains. p. 261

Before you service the product, read the safety instructions in the manual p. 6.

If 6 is still not resolved

  • contact your local ABB representative for replacement p. 6
    “Never attempt to repair a malfunctioning drive; contact your local ABB representative for replacement.”
  • For more technical information, contact your local ABB representative. p. 7
    “For more technical information, contact your local ABB representative.”
Open the manual at page 245 All ACS550-01 / ACS550-U1 error codes Manual details & download

This page summarises what the manufacturer’s manual says about 6; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with ABB. Found a mistake? Report an error.