LS ELECTRIC L7SB Series (400V) Error AL-55: Motor overrun

LS ELECTRIC L7SB Series (400V) · taken from the manufacturer’s manual, pages cited

Error codeAL-55

Motor overrun error code AL-55 indicates motor overrunning. The manual's first action is: “Check for incorrect wiring in the drive output and encoder. Also, check the connection and load status of the equipment.”

Model
LS ELECTRIC L7SB Series (400V)
Display shows
Motor overrun (AL-55)
Type
Error code
Source
Manual p. 141

What AL-55 means

Motor overrun p. 141

Common causes

What to do

  1. Check for incorrect wiring in the drive output and encoder. Also, check the connection and load status of the equipment. p. 141

If AL-55 is still not resolved

The manual gives no further instruction for this code. Open the code table in the PDF or contact LS ELECTRIC service.

Open the manual at page 141 All L7SB Series (400V) error codes Manual details & download

This page summarises what the manufacturer’s manual says about AL-55; 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 LS ELECTRIC. Found a mistake? Report an error.