ABB ACS550-01 / ACS550-U1 Error 34: MOTOR PHASE

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

Fault code34

Fault in the motor circuit. One of the motor phases is lost. The manual's first action is: “Check for and correct: • Motor fault. • Motor cable fault. • Thermal relay fault (if used). • Internal fault.”

Model
ABB ACS550-01 / ACS550-U1
Display shows
MOTOR PHASE (34)
Type
Fault code
Source
Manual p. 246

What 34 means

MOTOR PHASE p. 263

Common causes

  • Fault in the motor circuit. One of the motor phases is lost. p. 263

What to do

  1. Check for and correct: • Motor fault. • Motor cable fault. • Thermal relay fault (if used). • Internal fault. p. 263

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

If 34 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 246 All ACS550-01 / ACS550-U1 error codes Manual details & download

This page summarises what the manufacturer’s manual says about 34; 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.