Page 2 of 2 FirstFirst 12
  1. #11
    djk's Avatar
    Lives in CHAMBERY, France. Last Activity: 23-02-2016 Has been a member for 3-4 years. Has a total post count of 9.
    Shields are only connected at one end of the cable and the earth is connected to the mains earth.
    Thanks for the doc

  2. #12
    djk's Avatar
    Lives in CHAMBERY, France. Last Activity: 23-02-2016 Has been a member for 3-4 years. Has a total post count of 9.
    Ok, ripped every thing out of my control box and tested the drivers.
    I have 100VAC on the earth and 230V on R+ of the motor connection.( the 3 drives)

  3. #13
    m_c's Avatar
    Lives in East Lothian, United Kingdom. Last Activity: 5 Hours Ago Has been a member for 9-10 years. Has a total post count of 1,839. Received thanks 192 times, giving thanks to others 5 times.
    Is that with the earth connected?
    If it is, I'd be checking the earth on the socket you're using to power it.

  4. #14
    djk's Avatar
    Lives in CHAMBERY, France. Last Activity: 23-02-2016 Has been a member for 3-4 years. Has a total post count of 9.
    No just the P&N.
    Im taking the measurement from the mains earth to the earth pin on the driver
    Last edited by djk; 26-04-2013 at 08:09 PM.

  5. #15
    m_c's Avatar
    Lives in East Lothian, United Kingdom. Last Activity: 5 Hours Ago Has been a member for 9-10 years. Has a total post count of 1,839. Received thanks 192 times, giving thanks to others 5 times.
    Unless the case is grounded, you will nearly always get some kind of voltage reading between the case and ground. If you put any bit of metal near something that is either switching power or containing an active inductor, and you will get power generated in that bit of metal.

    The case has to be properly grounded to ensure that power is dealt with safely, and to minimise noise transmission.
    All grounds should come back to a central star point, and only be connected at one end to prevent ground loops.

Page 2 of 2 FirstFirst 12

Similar Threads

  1. stepper motors not being driven
    By sprint in forum Machine Control Software
    Replies: 4
    Last Post: 12-02-2013, 03:42 AM
  2. What power stepper motors do I need?
    By Monty_jon in forum Stepper & Servo Motors
    Replies: 4
    Last Post: 06-03-2012, 12:41 AM
  3. Help with Stepper Motors
    By Scott in forum Stepper & Servo Motors
    Replies: 8
    Last Post: 04-04-2010, 02:35 PM
  4. rs stepper motors
    By chaz@2b in forum Stepper & Servo Motors
    Replies: 19
    Last Post: 06-08-2009, 11:05 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
  •