Possible Problem

Possible Problem

Postby Fedgar » 22 Sep 2016, 20:27

So, I finally got around to rehabing a machine I built in late two thousand something.
I got my software setup, and everything working in manual mode (AKA within the software, and using buttons I have mounted to the controller box.

A bit more background: I am using a MK1 from 7 years ago on a Fireball V90 kit thing that someone got me.
I have 3d printed a toolholder which holds a sharpie (I figured that was less destructive)

The problem I am having is, when I upload a basic program... Things dont run as I would expect.
I have attached a link to a picture of what I was trying to make, and what happened.
It seems like its okay on some of the moves... others are having real issues. I dont know where to begin troubleshooting this.

On the bright side... I think I might have found an excellent way to make modern art. :lol:
Posts: 12
Joined: 20 Sep 2016, 21:33
Controller: Mk1

Re: Possible Problem

Postby Support » 26 Sep 2016, 15:36

It is possible that your machine has backlash or is loosing steps.

Please draw a circle on your machine, say it has diameter of 100mm. Please post picture of finished circle.
Posts: 2659
Joined: 07 Apr 2014, 17:39
Controller: Many controllers

Re: Possible Problem

Postby Fedgar » 28 Sep 2016, 03:09

I will do that in two days time, I am out of town right now working a job.

Thank you for responding. I was beginning to think there was no one out there...
Posts: 12
Joined: 20 Sep 2016, 21:33
Controller: Mk1

Re: Possible Problem

Postby Fedgar » 28 Sep 2016, 03:23

Ooops, I wanted to edit that last post, but it wont let me until a moderator reviews it...

I am not 100% sure I know how to program it to do that via just the software, is that what you are trying to test? Because I did use a DXF import, so its possible it just isnt importing properly? I am wondering if we shouldnt eliminate any possible setup problems in the software on my end.

Maybe it would be a good idea to import some known settings? as well as known gcode?
Posts: 12
Joined: 20 Sep 2016, 21:33
Controller: Mk1

Re: Possible Problem

Postby Support » 28 Sep 2016, 12:03

It would be best that you send us your g-code or DXF file and also your .setting file (file/Export settings).
Also draw circle in AutoCAD and draw it with your CNC and post picture.
Posts: 2659
Joined: 07 Apr 2014, 17:39
Controller: Many controllers

Re: Possible Problem

Postby Fedgar » 28 Sep 2016, 17:41

Excellent. Here is my settings file (I am traveling with the computer I use to run this)

Here is the Gcode I used to make that original photo.

Code: Select all
G90 G17 G21
(Layer: 0)
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And I will make a circle and try running it tomorrow when I get home. Thank you.
Settings file.
(49.45 KiB) Downloaded 40 times
Posts: 12
Joined: 20 Sep 2016, 21:33
Controller: Mk1

Re: Possible Problem

Postby Support » 04 Oct 2016, 07:13

Please post picture of a circle when you will be able to.
Posts: 2659
Joined: 07 Apr 2014, 17:39
Controller: Many controllers

Re: Possible Problem

Postby Fedgar » 11 Oct 2016, 16:01

Okay, here is the photo.


I tried it a few times.
What I noticed was the motors would stop turning either X or Y axis for no apparent reason. I dont think it was jamming up, it seemed more like the motor just stopped trying to turn.
Posts: 12
Joined: 20 Sep 2016, 21:33
Controller: Mk1

Re: Possible Problem

Postby Support » 12 Oct 2016, 09:55

Make sure that you couplings are all tightened. se if axis of motor is turning when the screw ball is not.
Posts: 2659
Joined: 07 Apr 2014, 17:39
Controller: Many controllers

Re: Possible Problem

Postby Fedgar » 12 Oct 2016, 16:28

I checked that after I noticed the lines. I think it halts the motor. Obviously things happen kind of fast so its hard to tell. Is there a good way to check that kind of thing?
Posts: 12
Joined: 20 Sep 2016, 21:33
Controller: Mk1

Re: Possible Problem

Postby Fedgar » 13 Oct 2016, 23:26

Alright. I marked a line with a sharpie along the back end of the motor shaft, on the coupling and on the screw on the X and Y. I ran it until it had problems just to see what would happen, There was no binding or slipping on that side.

After that I started attacking the driver boards. I checked the dip switches on them and behold I found that all 3 were in the up position.

I have the probostep V1 driver boards with 8 wire steppers, I found that they run very smooth and repeatable when I have them configured for half steps (IE 101 instead of the 111) that I had before.

But now for some reason my Y Phase has died. It isnt the motor or the wiring to the motor because I swapped cables and thats not a problem, I also swapped ribbon cables from the controller to the driver with no issues.

Could I have done something to the board?
Posts: 12
Joined: 20 Sep 2016, 21:33
Controller: Mk1

Re: Possible Problem

Postby Support » 14 Oct 2016, 06:47

Please post photo of your controller.
Please check if all axes outputs of controller are working correctly. Use stepper driver that is OK and test all axes for motion. Also test if distances are correct when testing it.

It is a possibility that your drivers are faulty or maybe Y output is damaged.
Posts: 2659
Joined: 07 Apr 2014, 17:39
Controller: Many controllers

Re: Possible Problem

Postby Fedgar » 17 Oct 2016, 01:23

Alright I will post a photo.

I am almost certain the driver board for the Y axis is faulty. Here is a description of my setup, and what I did to test.

I have 3 boards, that are wired out to 3 amphenol style connectors. Which are then connected to pigtails out to the motors.
First I swapped cables to the motors, So when originally the Y wouldnt work, after I swapped the Y motor and the X motor, the X motor stopped working and the Y motor worked, therefore I knew the Motors and cable on both were fine.
Next I swapped the ribbon cables coming from the Controller to the driver boards between X and Y. Same result, Y worked fine, X failed.
I also have noticed that when I plug power in, the LED lights on the Controller and Driver boards get very dim over time unless I unplug the Y driver board.

So where do I get another Driver board? The driver is the ProboStep VX with a chip SLA7078MR
Posts: 12
Joined: 20 Sep 2016, 21:33
Controller: Mk1

Re: Possible Problem

Postby Support » 21 Oct 2016, 06:29

If you look for exact driver I cannot really help you, try remembering where you purchase it or google it.
If you are interested in our drivers take a look here: http://planet-cnc.com/products/
Posts: 2659
Joined: 07 Apr 2014, 17:39
Controller: Many controllers

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