529,950 active members*
2,275 visitors online*
Register for free
Login
Results 1 to 4 of 4
  1. #1
    Registered
    Join Date
    Dec 2006
    Posts
    294

    Fanuc 31iAB - 401 VRDY Off

    Dear Experts

    Soon after control ON, we are getting error 401 VRDY Off for all axes
    We have tried by replacing control card of Fanuc PSM
    Checking connectors and wiring for CX3(MCC) and CX4(ESP)

    Please advice further steps

    Regards

  2. #2
    Junior Member
    Join Date
    Nov 2018
    Posts
    24

    Re: Fanuc 31iAB - 401 VRDY Off

    Confirm that you MCC contactor getting on. After EMG release. If yes need to check check EMG circuit

    Sent from my SM-M317F using Tapatalk

  3. #3
    Registered
    Join Date
    Dec 2006
    Posts
    294

    Re: Fanuc 31iAB - 401 VRDY Off

    Thanks for your response, we found loose connection between CX4(ESP) on control card of Fanuc PSM and IO PCB, same fixed then ok

  4. #4
    Junior Member
    Join Date
    Nov 2018
    Posts
    24

    Re: Fanuc 31iAB - 401 VRDY Off

    Ok

    Sent from my SM-M317F using Tapatalk

Similar Threads

  1. Fanuc Alarm 404 VRDY on
    By Saviour in forum Fanuc
    Replies: 0
    Last Post: 11-16-2016, 09:24 AM
  2. 401 alarm fanuc ota with smoke vrdy
    By Luslugger in forum Fanuc
    Replies: 0
    Last Post: 10-13-2015, 03:29 PM
  3. VRDY OFF ALARM 401 FANUC 0M ALFA SERVO
    By RASH1 in forum Fanuc
    Replies: 15
    Last Post: 06-25-2015, 03:45 PM
  4. FANUC 0MF VRDY OFF ALARM 401
    By RASH1 in forum Fanuc
    Replies: 4
    Last Post: 06-17-2015, 03:37 PM
  5. Alarm 403: VRdy off , Fanuc OM
    By ThomasS in forum Fanuc
    Replies: 8
    Last Post: 07-27-2012, 01:39 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •