Mitsubishi Electric 600M Series Error SV0020: No signal detection 1

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

Error codeSV0020

No signal detection 1 means A, B or Z phase signals from motor-end detector have become "H" or "L". The manual lists no action for this code.

Model
Mitsubishi Electric 600M Series
Display shows
No signal detection 1 (SV0020)
Type
Error code
Source
Manual p. 468

What SV0020 means

No signal detection 1 p. 468

Common causes

  • The difference input for one of the A, B or Z phase signals of the detector installed on the motor end has become "H" or "L". p. 468

If SV0020 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 468 All 600M Series error codes Manual details & download

This page summarises what the manufacturer’s manual says about SV0020; 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.