. .

Threaded View

Previous Post Previous Post   Next Post Next Post
  1. #3
    If the machine has been working for a while check the limit switch cables for damage

    repeatedly being flexed in the same place will break the wires
    very often near to the connectors connecting the limit switch to the cable

    is your controller like this
    Click image for larger version. 

Name:	Unity_connections[1]-1000x1000.jpg 
Views:	1268 
Size:	127.0 KB 
ID:	25811
    web page gives details of wiring to the various connectors
    https://www.probotix.com/wiki/index....reakout_Board:

    if you are getting "limit switch triggered" before the machine moves

    do you know if the limit switches are normally open or normally closed ?

    un plug the limit swich cables and in mach3 change the limit switch setting


    assuming the switches are normally closed so the BOB input is low until a switch opens

    in mach3 ports and pins
    change the limit switch pins from active high to active low ( or vice versa depending on your settings)

    this will disable the limit switches so your control will not see a trigger from a faulty switch or cable

    if your control now works you will need to check the limit switches and cables

    if you still getting spurious triggers you may need to open the control box to check the 5V supply to the breakout board


    John

    PS
    do you have a multimeter to do continuity tests and check various voltages
    Last edited by john swift; 27-05-2019 at 11:32 PM. Reason: add PS

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Mach 3 new licence, now reset not working..
    By Fastesteddy in forum Artsoft Mach (3 & 4)
    Replies: 7
    Last Post: 13-07-2018, 07:57 PM
  2. Help needed with Mach 3 - reset external flashing light
    By Tom J in forum General Electronics
    Replies: 7
    Last Post: 26-03-2017, 08:34 PM
  3. Sieg KX1 & Mach3 won't come out of emergency reset
    By lateAtNight in forum Gantry/Router Machines & Building
    Replies: 32
    Last Post: 19-06-2015, 06:37 PM

Bookmarks

Posting Permissions

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