G540 CNC DRIVERS
I'm still questioning of the use of a expensive stepper drivers in general, if you spend the money, why not get a servo? Either you are poor like me and you take everything chinese, or you go the wealthy route, and you take a servo. I also think the gecko is better for various reasons, but don't add bullshit to this, the argument is technical. I know it's popular to spit on chinese stuff, but Toshiba is not chinese, and there is absolutely no way for a motor controller to lie on microstepping, it might be un-balanced, but it's more complicated to lie that to do it (because at the end of your 8*200 microsteps, the motor has to be back in it initial position if there was no slippage, and the M_0 has to be high, that's in the datasheet). I just thought you guys might like to see a direct comparison if you need an excuse to pay that little bit more for a better, IMHO, bit of kit. For arguments sake, they both had the same microstepping, 8x and 10x respectively, but I don't trust that number for the TB6560. I stopped there because the table was shaking so much I got a bit scared.
The Gecko was still going fine at 200mm/s and 6000mm/s2.
G540 CNC DRIVER
The Chinese driver started stalling at just over 100mm/s and acceleration of ~1200mm/s2. But I think in this case, you certainly get what you pay for. £40 for the chinese board, £175 for the Gecko. The paths aren't quite the same for both videos, but both drivers are tuned as well as I can make them using Stepconf and LinuxCNC. I thought you guys might be interested in the results. I've now started to play with it and had a choice of stepper drivers to use. I know I can make a cable to control the steppers as-is, but my concerns are with the limit/datum switches and the spindle drive.ġ) Can I simply run 120VAC into the spindle drive? Since rectified and filtered 120VAC works out to about 160VDC, will it work to do this? If so, would I simply by-pass the spindle choke since it limits the output to 6A? I understand that there is a jumper on the spindle board, but will the drive output 140VDC with 120VAC in? Was this little lathe made to use 240V because it was manufactured in England? Or does it really need the higher voltage?Ģ) Can I use the Index Channel of the spindle resolver to send the index signal to a G540? Has anyone tried this?ģ) Can I use the 0-10V signal from the G540 to control the spindle speed on the Sprint 1200 Drive? I can't see any reason why not, but I remember reading advice on this board to use a step/dir spindle control instead.So, I recently found an XY stage on Ebay. I also have Eurocard 96 pin plugs and DB25 breakout boards on hand. Cost of the G540 is not an issue, as I already have it. My intention, originally, was to convert it from 240V to 120V and replace the controller with a G540.Īfter having done much reading here and elsewhere, I have surmised that I genuinely don't know what is the most appropriate route. It still has Cosmoline on it, and the controller came with it. I have recently purchased a new NovaTurn lathe that has not been used.