I just had some first runs with my CNC Router.
Here are some prelimary details, there is still a lot to do.
Travels X=850mm, Y=500mm, Z=100mm
Had a go at milling a PCB with insulation milling.
Used a mill-bit I had available and without squaring the mill first.
I was quite impressed with the raw quality.
Controller is a Delta Tau PMAC-PC where I download the g-code into.
PMAC's can run G-code by default.
thanks, mechanical is it quit simple but ofcourse not finished.
Rebuild is in progress, new controller has been ordered.
Old controllers is PMAC-PC ISA bus
New controller will be UMAC Turbo2 with four axis analog controller.
I will share more info when I have it.
Well the one and very important reason for me is that I like the inbuild g-code
capabilities if the Delta Tau controllers.
My original PMAC-PC controllers came from old Gen III Array Spotters which I could salvage. The Lowbow linear slides came from these too.
I have some strange behavior seen from the PMAC board that I use, and my spare board has an older version of firmware on board.
I had seen the UMAC systems on Ebay before but now it was a good opportunity and I went for it.
Higher speed, more memory for the g-code programms and USB connection instead of ISA bus.
Only thing is I have to convert my motor settings from PMAC to UMAC and this may take a little while.
Are you working with Delta Tau systems yourself?
I work on Delta Tau systems all the time.Are you working with Delta Tau systems yourself?
Yes I have already made a complete backup of the old ISA PMAC-PC 1 board.
I have to check the I-variables on both systems but at the moment I'm still waiting for the UMAC box to arrive.
A question ,when I have the following configuration is there atleast one free output bit available to switch on/off the spindle motor?
I was thinking of using the wachtdog output for this when possible (have to check manual)
configuration is as follows:
Computer Turbo PMAC2 USB - ACC-54E
One ACC24E2A 4 channel board.
and ofcourse power supply.
For an extra output map one of the unsed amp enable on the ACC24E2A to a M varible and use that.
That is realy you only option for outputs with what you have.
You could buy a I/O card on Ebay if you need more.
I was afraid you where going to say that, an ACC11E is probably my solution.
I was going to use the fourth axis for a rotary axis, but that can probably waity a bit.
One thing I have to check is if I have an empty slot free for the ACC11E.
I have only a 4-slot bus plane as far as I could check it.
I still have to receive the box.
I'm just working with a couple of lowboy stages, salvaged from the same spotter system... I've got the original motor drives, but as the controller was missing, I've opted to use a KFlop/KAnalog board (from Dynomotion)... While I do have the system operating reasonably well, I was hoping that I could trouble you for the PID values originally used in these machines? I realize they may not drop right in, but I'm hoping the original settings would give me a starting point to optimize the beast!
Thanks so much,
Great minds think alike don't they?
I was lucky enough to be able to salvage the complete computer system also and that is how I got involved with Delta Tau controllers.
I am in the middle of a rebuild of my attick and that is where my router is sitting normally. So at the moment it is not in operating condition so I can not check my PID settings in my Turbo Umac controller system.
What I could find where my original Variables that I salvaged from the PMAC-1 board (included here)
Hopefully You can extract the PID settings from there.
I suggest you download the Turbo-2 manual from the delta tau website to get the descriptions for the I-variables. Then you can find which variables does what for the PID settings.
With my set-up I am able to use the demo software from Delta tau to run G-code files with full support of the g-codes.
drop me a mail when you need more.
regards from Belgium, Otto.
Last edited by Hersoft; 09-14-2011 at 05:56 PM. Reason: missing uploads
Thank you so much - that really makes my day!
Absolutely - the hardware out of those machines makes for a truly amazing motion system.... As long as you can make it work!
No worries at all about finding your newer values - this is exactly what I was hoping for! I'll do some digging, and let you know how it goes.
(from across the pond in Canada)