There is a good chance there was a wiring error in you original setup. The fact the E-stop did not work tells me there was a design error. E-Stop should never fail, or rather if it does fail, the machine stops. If the inputs on the drivers are blown, that says the same thing. Smaething was wrong as that should never happen.
Diagnosing a system that has a design fault is really hard because our brain tends to think of how a correct machine would function or how the machine we THOUGHT we built should function. The best plan is to ignore LCNC the BOB and all for now and see if you can drive the motor drivers with a simple signal generator and no computer. If this does not work, you need to replace or repair the drivers before you think about reconnecting a computer. If you need to buy some test equipment, now is the time. At least a cheap square wave signal generator and a cheap $12 logic analyzer t go with your multimeter. Finally, you should draw a schematic of how you propose to connect the computer and post it here for others to review. They will check if nothing else the e-stop design to see that it is failsafe and also check that you have the power and computer parts properly isolated. It seems this may not have been the case in the past, and you don't want to simply put it back the way it was. First step is to verify the motors and drivers work independently of computer control. On Sun, May 1, 2022 at 7:53 AM Alan Condit <condit.a...@gmail.com> wrote: > Hi Guys, > > I was machining a part on my X2 Minimill. Suddenly it left the programmed > track (spoiled the part) and didn’t respond to Estop. I powered the system > off manually raised the Z axis and tried turning it on so I could home it, > smoke started coming from the controller. So I powered everything down and > started troubleshooting. > There were two chips on the CandCNC Mini-IO BOB that had let out the magic > smoke. I had a spare BOB that I built using the Gecko G540 schematic. So I > replaced the other BOB with it. The drives in the controller are Superior > Electric SS2000MD4 drives. > > When I got everything put back together and checked the wiring everything > looked good so I tried powering it up. When I tried homing it the traces > move in AXIS but there is no movement on the machine. The motors hold > position so the output of the drives is active. Is it likely that I blew > out the inputs on the drives? > > Thanks, > Alan > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Chris Albertson Redondo Beach, California _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
