Thread: Losing steps/position, again
-
07-04-2020 #31
Doddy, that sounds like a decent plan and I will take you up on it. I already have a DIV268 doing nothing so I won't be needing that thanks. It may take e a little longer than an hour as I have no idea where the current X axis is fed from, maybe it will be apparent when I get behind the bits added for the conversion. When would it be convenient to pick up the PSU?
Thanks
Carl
-
07-04-2020 #32
-
07-04-2020 #33
Looks like I can use a plugin to control the VFD http://www.forum.cncdrive.com/viewtopic.php?f=14&t=2041
-
08-04-2020 #34
Pictures of currrent control box - I was wrong I don't appear to have a 5v supply.
https://lozharroplures.co.uk/my_images/1a.jpg
https://lozharroplures.co.uk/my_images/2a.jpg
https://lozharroplures.co.uk/my_images/3a.jpg
https://lozharroplures.co.uk/my_images/4a.jpg
https://lozharroplures.co.uk/my_images/5.jpg
https://lozharroplures.co.uk/my_images/6.jpg
https://lozharroplures.co.uk/my_images/7.jpg
https://lozharroplures.co.uk/my_images/8.jpg
https://lozharroplures.co.uk/my_images/9.jpgLast edited by ngwagwa; 08-04-2020 at 11:26 AM. Reason: correct image location
-
08-04-2020 #35
You've linked to the same file for each image.
Last edited by Doddy; 08-04-2020 at 11:31 AM.
-
08-04-2020 #36
Steppers are generally all rated 2-3Vdc yes?. So if said nema 17 / 23 or 34 (2-3Vdc) were put on the same driver why would I only blow the 17? (unless I didn't change the current output).
Also inductance. There are Nema 34's out there that are abysmal running on 60V supplies and ideally need at least 120Vdc to work reliably.
Also there are now drivers on the market with direct 240Vac input connections so no need for psu's anyway. These are aimed at nema17-23 size. Why would these not burn them up either?
I and many others use 60Vdc at least using larger 34 size drivers to run nema17 & 23 size motors. Even that goes against the grain and it's worked for years.
-
08-04-2020 #37
Um!, no 5V supply to the BoB?, normally people sling a USB lead from the computer to the BoB, and the BoB salvages a 5V supply from that. Or, you can provide a 5V supply to the "PC 5V" supply on the board itself.
Edit: My bad, image 4A shows the BoB has a supply from somewhere.Last edited by Doddy; 08-04-2020 at 11:49 AM.
-
08-04-2020 #38
I've got a similar BOB and spotted something too.
If you take your 5v from 'elsewhere' (bottom right of bob) and don't get it through the usb header it bypasses the boards protection circuits!! Caution needed.
It's recommended to use a bare ended usb cable from a psu to the board header in order to both avoid PC usb noise and keep board protection.Last edited by dazp1976; 08-04-2020 at 12:09 PM.
-
08-04-2020 #39
I think it is fed from the Baldor board behind it - it's the top red wire
https://lozharroplures.co.uk/my_images/10.jpg
-
08-04-2020 #40
Thread Information
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
Similar Threads
-
Losing steps
By Edendale in forum General DiscussionReplies: 11Last Post: 06-03-2020, 10:10 PM -
Weird noise on travel and losing position
By ngwagwa in forum Artsoft Mach (3 & 4)Replies: 12Last Post: 07-02-2020, 05:45 PM -
Router losing steps. Solution needed. Will this help?
By cncbobuk in forum Chinese MachinesReplies: 9Last Post: 27-12-2017, 03:40 AM -
Losing steps on Z axis
By Arzo10 in forum Machine DiscussionReplies: 15Last Post: 31-03-2017, 10:49 AM -
New Mill losing steps
By lukecnc2012 in forum Gantry/Router Machines & BuildingReplies: 42Last Post: 08-11-2014, 02:56 PM
Bookmarks