ABB ACH550 Error 2011: UNDERLOAD

AC drive · taken from the manufacturer’s manual, pages cited

Alarm code2011

The drive has detected that the motor load is lower than expected, warning of a possible motor underload fault trip soon. The manual's first action is: “Check: Motor and drive ratings match (motor is NOT undersized for the drive) Settings Group 37: USER LOAD CURVE”

Model
ABB ACH550
Display shows
UNDERLOAD (2011)
Type
Alarm code
Source
Manual p. 30

What 2011 means

UNDERLOAD p. 30

Common causes

  • Motor load is lower than expected. This alarm warns that a Motor Underload fault trip may be near. p. 30

What to do

  1. Check: Motor and drive ratings match (motor is NOT undersized for the drive) Settings Group 37: USER LOAD CURVE p. 30

Before you service the product, read the safety instructions in the manual p. 2.

If 2011 is still not resolved

  • contact the factory or your local Authorized Service Center for repair or replacement. p. 2
    “Never attempt to repair a malfunctioning ACH550; contact the factory or your local Authorized Service Center for repair or replacement.”
Open the manual at page 30 All ACH550 error codes Manual details & download

This page summarises what the manufacturer’s manual says about 2011; 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.