Thread: Advice on converting my VMC
The price i got was £1262 for the GSK980MDc direct from GSK, the other Newker NEW990TDb was on Ebay £450 ish. Aliexpress appears to be for retail punters while Alibaba appears to be set up more for traders. I found GSK gear only on Alibaba. Of the Chinese controllers GSK appears to be the premier brand for the machine builders. For lathes with automatic tool change GSK980TDb, and milling machines GSK980MDc. I think if i do buy i would be happier buying from the manufacturer. In your experience will they negotiate on price?
directly then, or just check what you are looking to at fleabay isnt actually them.
Make sure you ask for the additional "deconcentrator" board and say to them-" the one with the relays".
Proteus you need to make it easier for us by giving links not just model numbers. We could search etc but then so easy to be looking at wrong stuff then be at cross purposes. Also me personaly I've not got time to sit searching for you.
Looking at what you wrote then If it's the board I'm thinking then your mistaking what the C11 board does.? It's Just Breakout board and does nothing but route signals along with few relays and spindle control. You'll still need motion control card.
The Cslabs IP-S is everything in one package and much higher quality so can't even be compared.
Provide links and I'll gladly look at these for you but I suggest you back off buying anything until you know what your buying.!
My apologies Jazzcnc. I assumed most of you guys knew these steppers and drivers already. My fault.
I do know the difference between the C11 and the CSMIO/IP-S. Just tryed to reduce cost. Besides i was curious about your experience with the DM860A drivers
and 34HS9805 steppers from Longs-Motors vs European or US "made" drivers and steppers.(Link below).
Did take a look at the Hicon Integra as well, but i have already decided on the CSMIO/IP-S. It`s more expencive, but it pays off in the long run.
As for drivers, i have 3 KL-8056D drivers in house and will make use of them. As for steppers, i have chosen 3 KL34H260-35-4A.
These are 3,5Amps 465oz.in steppers and 5,6Amp(peak) drivers. Will choose 2(maybe 3) x 24Vdc/8,3Adc Switch mode PSU to keep noise down.
I do beleive i will have a good system with this choice, but please feel free to comment if you see something wierd :-)
KL-8056D driver: http://www.automationtechnologiesinc...nk-is-included
KL34H260-35-4A stepper: http://www.automationtechnologiesinc...nk-is-included
Hicon Integra: http://www.automationtechnologiesinc...ler-industrial
KL-201-24 PSU: http://www.automationtechnologiesinc...pply/kl-201-24
DM860A driver: http://www.longs-motor.com/productin...12_80_137.aspx
34HS9805 stepper: http://www.longs-motor.com/productin...12_25_120.aspx
Only using 24V for those drivers/motors looks like throwing away a lot of performance. Taking it up to 68V or so wouldn't cost much more, if you use a linear power supply instead of switch-mode. Linear supplies generally better for stepper power supplies anyway - handle the pulse peak loads much better. Just a thought - you might have already considered this.
The Following User Says Thank You to Neale For This Useful Post:
Did I read that you are using nema 34 motors if so you might want to use much higher voltage drives like mains voltage. As Neale has point out 24V will not do the job for the steppers...Clive
The Following User Says Thank You to Clive S For This Useful Post:
Actually i considered using the original linear powersupply, but measuring 84VDc across the output makes me uncertain if the drivers can handle it.
They are rated for 20-80 volt.
Thanx guys for your information :-)
Like i said, i`m a newbie on this, and i spent most of my time lately in the evening/night reading myself up on Bob`s, Motion Controllers, drivers and steppers.
Last night i had to tuck myself in bed at 2 o`clock in the night, just before my mains circuit in my head blew :-)
Ok, so i have concluded with the CSMIO/IP-S as my motion controller as it seams to be compatible witch Mach software, and in use by many.
Besides thats the price i have to pay to simplify installation of the original ATC with its sensors and pneumatic valve system.
Listening to you guys, i have choosen to step the voltage up to 72V using the KL-7220 Unregulated Linear 1440W/72VDC/20A Toroidal PSU from Automation Technologies.
(I thought noice was a real issue with CNC machines, and keeping it down to 24Vdc industry standard was considered the way to go?)
Just have to keep noise issues in mind, and shield as much as possible. The cabinet has seperate compartments already, and should help a bit.
As for steppers and drivers, i have decided to use the KL34H280-45-4A NEMA34 640 oz-in 4.5A Stepper Motor, and KL-8056D Digital 2 bit DSP Based - Bipolar Stepper Motor Driver.
Any last minute advice or comments ?
KL34H280-45-4A : http://www.automationtechnologiesinc...otor-640-oz-in.
KL-5056D : http://www.automationtechnologiesinc...nk-is-included
KL-7220 : http://www.automationtechnologiesinc...0vac-or-230vac
Will try my best to document the conversion and perhaps help others that might be in a somewhat similar situation.
Last edited by Proteus; 04-10-2016 at 10:47 AM.
(I thought noice was a real issue with CNC machines, and keeping it down to 24Vdc industry standard was considered the way to go?)..Clive
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