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Author Topic: Newbie to cnc building in need of some help please  (Read 1148 times)

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Offline TPS

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Re: Newbie to cnc building in need of some help please
« Reply #10 on: January 20, 2019, 09:07:37 AM »
anyway i think both solution should work(but not sure).
even here : https://www.youtube.com/watch?v=uN7VospeGN0
is an other one with common GND wiring.

if you Switch everything on, do you have Holding torque at your Motors?
« Last Edit: January 20, 2019, 09:13:51 AM by TPS »
anything is possible, just try it.
if you find some mistakes, in my bad bavarian english,they are yours.
Re: Newbie to cnc building in need of some help please
« Reply #11 on: January 20, 2019, 09:22:41 AM »
When everything is powered on i can feel some pull on the ball screws but i can still turn them by hand. It just feels different when powered on.

Offline TPS

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Re: Newbie to cnc building in need of some help please
« Reply #12 on: January 20, 2019, 09:28:19 AM »
what Motors do you exactly have?
how are dip switches (SW1-SW3) set on the Motor Controller?
anything is possible, just try it.
if you find some mistakes, in my bad bavarian english,they are yours.
Re: Newbie to cnc building in need of some help please
« Reply #13 on: January 20, 2019, 09:31:30 AM »
I have the longs 425 oz stepper motors. p1=off p2=on p3=off. the only others on are 6,7,8

Offline TPS

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Re: Newbie to cnc building in need of some help please
« Reply #14 on: January 20, 2019, 09:35:13 AM »
ok the Switches are set to 2.36A, i think then you should not able do turn the Motor easily by Hand.

where is the enable of the Driver wired too?
anything is possible, just try it.
if you find some mistakes, in my bad bavarian english,they are yours.

Offline TPS

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Re: Newbie to cnc building in need of some help please
« Reply #15 on: January 20, 2019, 09:38:52 AM »
for the Motor wiring:

A+ black
A- green
B+ red
B- blue
anything is possible, just try it.
if you find some mistakes, in my bad bavarian english,they are yours.
Re: Newbie to cnc building in need of some help please
« Reply #16 on: January 20, 2019, 09:44:00 AM »
The drivers are DM542A with a max peak of 4.2A. According to some papers I found online with 1,2,3 off= 4.2A. So I just switched to mach. Can still turn by hand. My enable is not wired at all (just like in the video I shared.) My PUL+(+5v) and DIR+(+5v) are wired to the +5 volt side of my terminal block(as in the video)
Re: Newbie to cnc building in need of some help please
« Reply #17 on: January 20, 2019, 09:49:56 AM »
I have
   red=a+
green=a-
 black=B+
  blue=B-

Offline TPS

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Re: Newbie to cnc building in need of some help please
« Reply #18 on: January 20, 2019, 09:50:04 AM »
according to this Manual:

http://fablab.web-5.org/lib/exe/fetch.php/documentation:drivers_mpp:dm542a-manuel-20130925.pdf

i do not think you can leave enbl+ unconnected.

make a quick Connection to 5V just to be sure.
anything is possible, just try it.
if you find some mistakes, in my bad bavarian english,they are yours.

Offline TPS

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Re: Newbie to cnc building in need of some help please
« Reply #19 on: January 20, 2019, 09:51:40 AM »
« Last Edit: January 20, 2019, 09:57:51 AM by TPS »
anything is possible, just try it.
if you find some mistakes, in my bad bavarian english,they are yours.