Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: psutex on March 24, 2009, 07:40:20 PM

Title: Problem Testing motors off machine.
Post by: psutex on March 24, 2009, 07:40:20 PM

I am running Mach3 with a Xylotex 3-axis, 425 oz.in. motor system on the bench, no load.
I can use the arrow keys or mouse over the direction buttons on the screen and the motors turn.
If I repeatedly jog  the motors activating the same direction button the Y and z axis motors will intermittantly revers direction.
I can't find a pattern on when and how often the motors will reverse direction while pushing the same direction button.
Does anyone have any ideas. It would be much apreciated.
Thanks.
Rick

Title: Re: Problem Testing motors off machine.
Post by: Hood on March 24, 2009, 08:09:55 PM

Bad connection, noise or problem on the driver board.
Hood

Title: Re: Problem Testing motors off machine.
Post by: psutex on March 24, 2009, 10:09:17 PM

Thanks. I will look into the connections and ask Xylotex about testing the board.
Rick

Title: Re: Problem Testing motors off machine.
Post by: Tweakie.CNC on March 27, 2009, 04:29:54 AM

Hi Rick

A similar problem was posted recently and the outcome was that the motor connections were incorrect.

Tweakie.

Title: Re: Problem Testing motors off machine.
Post by: budman68 on March 27, 2009, 05:01:02 AM

I also had this happen recently with my 4th axis setup. When I had the cable from the motor directly wired to the drive via screw terminals, it worked flawlessly. When I set up a 6 pin DIN connector, I somehow got my wiring sloppy enough to have just enough solder touching 2 contacts (or a bad plug as I could not see any contact of solder anywhere) and this made the motor turn opposite directions when it should have only been going in one.

I cut the plug off and wired it straight to the drive again, and tada !, success again. Now to do a cleaner job soldering next time - ;D

Dave

Title: Re: Problem Testing motors off machine.
Post by: psutex on March 27, 2009, 06:28:45 AM

Thanks to all. I did cut off the connectors (that I made) to the "Y" axis motor and remade this wire and everything works fine now.
Either I will find a better connector or eventually once I am confident with the set up I will solder the cables to the wires.
Thanks.
Rick

Title: Re: Problem Testing motors off machine.
Post by: Tweakie.CNC on March 27, 2009, 08:04:32 AM

Glad you got it sorted Rick. (don't take any soldering lessons from Dave  :D )

Tweakie.