ABB ACS550-01 / ACS550-U1 Error 20: OPEX PWR

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

Fault code20

OPEX PWR indicates an internal fault from exceptionally low voltage detected on OINT power supply. The manual's first action is: “Contact your local ABB representative.”

Model
ABB ACS550-01 / ACS550-U1
Display shows
OPEX PWR (20)
Type
Fault code
Source
Manual p. 245

What 20 means

OPEX PWR p. 262

Common causes

  • Internal fault. Exceptionally low voltage detected on the OINT power supply. p. 262

What to do

  1. Contact your local ABB representative. p. 262

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

If 20 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 20; 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.