ABB ACS550-01 / ACS550-U1 Error 8: AI2 LOSS

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

Fault code8

AI2 LOSS occurs when analog input 2 value falls below A2 FAULT LIMIT (3022). The manual's first action is: “Check for and correct: • Source and connection for analog input. • Parameter settings for A2 FAULT LIMIT (3022) and 3001 AI

Model
ABB ACS550-01 / ACS550-U1
Display shows
AI2 LOSS (8)
Type
Fault code
Source
Manual p. 245

What 8 means

AI2 LOSS p. 261

Common causes

  • Analog input 2 loss. Analog input value is less than A2 FAULT LIMIT (3022). p. 261

What to do

  1. Check for and correct: • Source and connection for analog input. • Parameter settings for A2 FAULT LIMIT (3022) and 3001 AI p. 261

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

If 8 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 8; 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.