Re: Electrical Noise
开云体育Oh and if this jpg attachment works here's the list of Bergerda motors. The one I have that drives the X axis nicely is the 60SM-M0130MAL at 1.27N.m and 3000 RPM max. ? I think what would work for the knee is the 80SM-M0230MAL with 2.4N.m and 3000 RPM along with the 120T:20T belt drive (6:1) ? Maybe I'll just try the smaller one with 6:1 belt.? Time to go shopping. ? John ? From: [email protected] [mailto:[email protected]] On Behalf Of dave via Groups.Io
Sent: January-29-20 10:19 AM To: [email protected] Subject: Re: [MachCNC] Electrical Noise ? My heavy Z axis used to struggle with a big Nema 34. I swapped it out for a Nema 23 4.5Nm and it flies now.?? ? Dave ? ? ? Sent from my Samsung Galaxy smartphone. ? ? -------- Original message -------- From: John Dammeyer <johnd@...> Date: 29/01/2020 5:44 pm (GMT+00:00) Subject: Re: [MachCNC] Electrical Noise ? And mine is this one: ? For all I know this is causing a problem during homng. E-Stop, Fault, ERR/RST, and "Charge Pump" timeouts turn off all outputs without assistance from host software ? If for some reason the Fault or E-Stop inputs have a spurious pulse then I could see it stopping on homing Z. ? ? Or if the MACH3 Homing Z software does something odd occasionally with the charge pump this would also cause issues.? And some sort of WIN-XP issues could cause the charge pump to vanish shortly after booting WIN-XP. ? That would also explain why the problem never shows up on LinuxCNC with the parallel port or the MESA Ethernet 7i92H.? If it comes back I may just 'borrow' the USB Smooth Stepper from my CNC router.? Another option is to set the dip switch on the PMDX-126 to disable Charge Pump. ? ? May not be electrical at all. ? John ? ? ? From: [email protected] [mailto:[email protected]] On Behalf Of dave via Groups.Io ? Hi Spencer ? No.? Some are straight though... ? ? ? ? But read the spec on this one... ? ? ? Dave ? Sent from my Samsung Galaxy smartphone. ? ? -------- Original message -------- From: spencer@... Date: 29/01/2020 5:14 pm (GMT+00:00) Subject: Re: [MachCNC] Electrical Noise ? I have been following this thread but not carefully because I didn't think I had a problem. Now I am thinking that some minor drift I have over time could be missed steps not mechanical as I thought.? ? Is there any problem setting the debounce time as 10 or 20 us?? if this is input debouncing then what signals are being considers as noise sources, limit switches? there is no position feedback? ? also, aren't all break out boards opto issolated? ? ? ? Best regards, Spencer Chase ? ------ Original Message ------ From: "dave via Groups.Io" <qconvers@...> Sent: 1/29/2020 6:00:22 AM Subject: Re: [MachCNC] Electrical Noise ?
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