Messages

31

General Mach Discussion / Re: Y-Axis Sticking

« on: March 28, 2011, 10:49:21 PM »

So, I checked the pins with the multi tester...
With the probes in pins 1 and 5 the voltage jumps up to 8.9v and stays there when I let off the up arrow when I press the down arrow the voltage drops to zero.
With the probes in pins 1 and 4 the voltage reads 3.7 when pressing the up arrow and returns to zero when I let off of the key, works the same way when I press the down arrow.
This is with the Sherline 1/2 Pulse option selected.  Without it selected I get zero on pins 1 and 4 when pressing keys.

Oh, now the x axis is behaving the same way.
Z still works.

32

General Mach Discussion / Re: Y-Axis Sticking

« on: March 28, 2011, 01:10:59 PM »

Cool,
I'll check tha whenI get home.  I don't really know which wires to check though.  Do you have a schematic that shows which pins to check? Would I be able to check that output voltage on the manufacturers literature for the Motherboard?

33

General Mach Discussion / Re: Y-Axis Sticking

« on: March 28, 2011, 12:09:06 PM »

Man,  I really appreciate your input here Tweakie, I did try changing the active high/low.  Are all those settings contained in the .xml file?  If they are and it worked correctly before I rebuilt the computer... I am now wondering if maybe the controller got damaged or something? I moved it around a few times while remodeling my garage.
Or...
Is it possible the bios settings are different now? I went in and changed the bios setting for the parallel port from EES? to the recommended setting I found online which was ECP/EEC or something like that.  Sorry, I am at work right now cant actually look at the settings. Anyway, when I changed the setting there was a huge delay between key commands and movement of the motors and the stepper behaved the same way so I changed it back.  There were like four options for that setting in the bios.

34

General Mach Discussion / Re: Y-Axis Sticking

« on: March 28, 2011, 11:45:01 AM »

It's steps per inch.  I also checked the x axis to see if an inch on the DRO's was an inch on the table and it was correct.

35

General Mach Discussion / Re: Y-Axis Sticking

« on: March 28, 2011, 11:27:24 AM »

Tried that, no change.
Now that you mention it I thought that it was strange that the steppers are set at something like 32,800 steps?

36

General Mach Discussion / Re: Y-Axis Sticking

« on: March 28, 2011, 11:14:35 AM »

It's not screaching per say but it is definitely making noise. The sound is probably 50% as loud as if it were working properly.
How do I check the ground?

37

General Mach Discussion / Re: Y-Axis Sticking

« on: March 28, 2011, 10:53:27 AM »

I thought it might be the screw binding too so I remove the stepper from the mount and it behaved the same way.  This was before I switched the leads and saw the same problem with the x stepper on the y lead.
I am a mechanical designer and don't know much about testing electronics.  I own a decent multi tester but am unsure how to test the voltage of the wires to the stepper.
Can someone give me some bone head instructions?
Thanks for the help Tweakie and angel tech.

38

General Mach Discussion / Y-Axis Sticking

« on: March 27, 2011, 10:06:49 PM »

Hello All,

I purchased a Taig Mill about a year ago from a great guy back east that had it set up and running parts.
When I received it it came with all kinds of useful info as well as his Mach3 setup.xml so I plugged her in and was starting to make some parts when my computer took the worst kind of a ********* on me.  It took me a little while to get it rebuilt which included a new motherboard.  Work has been so busy the whole setup has sat in the shop for about the last eight months.
Needless to say getting it fired up again after all this time is like doing it for the first time.  I have Mach3 with the custom setup file and everything seems to be back to square one except a for a weird issue with my Y stepper.  Again,  I had the whole setup working before the PC rebuild so I'm a little stumped.
When I jog the Y axis the stepper makes noise like it is trying to go but it doesn't move.  If I tap the jog over and over it will take off at the correct speed and seems to operate normally, sometimes it'll even let me reverse direction.  I switched the leads from the controller to the steppers and the problem is repeated in the x axis and y works fine so I am pretty sure by process of elimination that this isn't a problem with the stepper.  I am using Keling KL23H276-30-BB steppers.
I do not know how to test this but the sound the stepper makes when it is " jammed up "  sounds like it isn't getting enough power.
If I hold down the arrow key to jog it and give the wheel on the stepper a little twist it will usually take off too.
Any help would be greatly appreciated...