Mitsubishi Electric 600M Series Error PR0391: No geometric arc spec.

CNC milling machine · taken from the manufacturer’s manual, pages cited

Alarm codePR0391

An arc command was issued with the geometric command, but no arc specifications were provided. The manual's first action is: “Check the specifications.”

Model
Mitsubishi Electric 600M Series
Display shows
No geometric arc spec. (PR0391)
Type
Alarm code
Source
Manual p. 485

What PR0391 means

No geometric arc spec. p. 485

Common causes

  • An arc command was issued with the geometric command even though there are no arc specifications. p. 485

What to do

  1. Check the specifications. p. 485

Before you service the product, read the safety instructions in the manual p. 4.

If PR0391 is still not resolved

  • contact service / dealer p. 5
    “Do not change the fixed cycle program without prior consent from the machine manufacturer.”
  • contact service / dealer p. 5
    “Do not turn OFF the NC a”
Open the manual at page 485 All 600M Series error codes Manual details & download

This page summarises what the manufacturer’s manual says about PR0391; 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 Mitsubishi Electric. Found a mistake? Report an error.