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Messages - joeaverage

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4771
Mach3 under Vista / Re: Another newbie hoping for a miracle answer
« on: April 17, 2018, 07:25:46 PM »
Hi,
run DriverTest.exe and post a screen shot of it please.

Craig

4772
Hi,

Quote
they're more like servos than open-loop steppers. The power-to-output is significantly more efficient as well.

Thats rubbish! They are steppers with all the limitations of steppers...feedback does not make faster, more powerful
or anything else. You are paying extra for no reason, spend the extra on securing the best open loop stepers/drives
or towards the extra for genuine AC servos.

Craig

4773
Hi,
good steppers with PROPER drivers and power supply are extremely good value. Provided you work WITHIN their
limitations they are really really good. Where most people come unstuck is they will try to achieve good results but
buy substandard equipment and/or demand that their machine exceed the limitation of the steppers.

Don't be hoodwinked into buying closed loop steppers, the manufacturers are playing on your fears about losing steps.
The premium you pay does not gain you enough to make it worth it.

AC servos are the way to go if you want high speed, power and resolution. Delta and Teco are two Chinese/Taiwanese
brands which are economical and yet very good. There are cheaper Chinese ones but with increasing question
marks over quality.

As a ballpark:
34 size stepper (700 oz.in) plus 80V driver plus 72V supply approx $250
400W Delta servo/drive (230V input) approx $400

No matter which way you cut it steppers are cheaper but the 400W servo will 'eat it for lunch' .

Craig

4774
Hi,
quick scan through the manual, don't quote me on this, this drive expects realtime RS485 communication
which is not Machs forte. You could probably achieve realtime RS485 with a Gallil motion controller, very
nice buit thousands of dollars.

I note you can fit an analogue board which converts the drive to analogue. Would still require an analogue capable
board to interface with Mach and you would still require RS485 to program the drive, albeit not realtime.

Mach3 and the motion controllers that work with it are step/direction. You could work around that to drive these
servos but it would be an expensive and time consuming proposition.

Good steppers and stepper drivers would be much cheaper or if you want/need high speed operation then step/direction
capable AC servos are a good way to go.

Craig

4775
Hi,
if you can use those servos do so, they are good.

You say you have a BDS5A drive but the pic you attached is for another. Which is it?
The one pictured is an analogue servodrive, old school but useful if you have an analogue controller.

Mach is a step/direction controller but there are controllers that will produce analogue output from Mach3. Galill, Kflop and CSMIO, none of them are cheap.

Can you post the manual of the drive you have?

Craig

4776
Mach4 General Discussion / Re: mach 4 plasma
« on: April 17, 2018, 02:18:03 PM »
Hi,
plasma requires THC support and that support is enacted to the motion controller not Mach.

As far as I know Vital Systems HiCon board is the only motion controller that has THC support. The short answer is you can have Mach4 plasma right now.

Craig

4777
Mach4 General Discussion / Re: output on/off from same button
« on: April 16, 2018, 02:38:11 AM »
Hi,
ask CSLabs, its their device, they are collecting money from customers for a product that does not work as advertised. Until customers like you hassle
them no changes will occur. Remember these board are sold at a premium but perform very much less well than my ESS at a third the price.

Craig

4778
Hi,
what hardware are you trying to operate? Given that tens of thousands of people use Mach successfully suggests
there must be a problem somewhere.

Craig

4779
Hi,

Quote
The correction does not happen on every control-loop cycle. 

Sort of buggers up option one.

Craig

4780
Hi,
with option two you've got two loops..why?

Just use step/dir to the servo drives and let that loop do its thing, theres no need for the extra expense
of the intermediate board.

Next question is what ballscrews are you using, you seem to be hung up on trying to linearise them?.
Even rolled ballscrews are OK to 50um over 300mm, is that not enough?
You could use ground ballscrews, C5 are good to about 18um per 300.
You could use the ballscrew map in Mach...no dollars to spend!

Craig

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