[Emc-users] Connecting Mesa 25 pin daughtercards to 50 pin FPGA card??
HI Is this possible? For example, can I connect a 7i77 + 7i74 to a 7i80HD using a special cable? I see there is a converter board on Mesa's website, but I only realised now that I messed u when ordering, and also the 7i80DB's were out of stock. For this case, can I just refer to the pinout config that mesaflash will display? Then again, I don't see firmware for the 7i80HD with say 2x7i77 +7i74. Can I use the 7i80DB firmware? Regards Henk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Blown BOB and ???
Being used to servos the first thing I test is the estop. Saves damage to expensive mechanics. Once I was testing a new interface. Running it from lower left to upper right. It was gaining about .1" every pass. ... after about 4 passes it took off for the upper corner at full speed: 400 ipm. My hand made it to the big red button ahead of the upper corner but knowing the axis estop limits were there and working gives piece of mind. Especially when the combined weight of the saddle and the table is 700 Kg. Dave On 5/1/22 8:59 AM, Chris Albertson wrote: 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 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 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Blown BOB and ???
On Sun, 1 May 2022 at 15:53, Alan Condit wrote: > I was machining a part on my X2 Minimill. Suddenly it left the programmed > track (spoiled the part) How? It is almost impossible for a fault to cause extra steps. Does it appear that one axis simply stopped moving? -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1912 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Blown BOB and ???
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 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
[Emc-users] Blown BOB and ???
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
