CR Onsurd Retrofit Help

[me1029134]

I recently purchased a CR Onsurd 72C10 CNC router. I was thinking about putting a UC300ETH-5LPT + UCBB breakout board. Does anyone have any advice on this? Or a better board to put on it? Or any experience with this?

OR IF YOU WOULD LIKE TO HELP ME MORE:
Would someone be willing to help me get it setup with a UC300ETH-5LPT + UCBB breakout board (unless there is something better out there)? I would pay, of course.

I guess the steps would be:
1. I send the current schematics over.
2. You write where the UC300 hooks up on the schematic. Or modify the schematic to add in the new controller.
3. Help with setting up the software

Probably would need to be able to:
- Speech fluent English
- Have very good knowledge of the UC300 board and wiring it up.
- Be willing to video chat

I made a Upwork post, or feel free to respond here.
If you apply on upwork please say that you came from this forum.
https://www.upwork.com/jobs/~0144f94c45a623c4a9

Thank you!

[ger21]

I'm not familiar with that particular machine, but I'd expect this conversion to be much more complicated than you think. On similar Italian machines I've used from that era, the electronics are beyond the capabilities of a UC300, and often use a PLC to control a lot of functionality. What most people do when converting these big old machines, is rip a lot of the old system out, and rebuild it with a lot fewer electronics.
One important thing, is that the machine likely has analog servo motors, which likely do not accept step/dir/ control from UCCNC. In that case, you would need a step/dir to analog converter for each servo motor.
You might want to post some pics of the control panel.

[me1029134]

Ok I did a lot more digging.

I have Kollmorgen ServoStar (Model SR03200-2G203B) Servo Drives. These have an Analog input for Velocity. So it looks like non of the UC CNC products have Analog Servo Capability. Is that correct?

So I think the only thing I could find is to use MACH 4 (bummer) with the Galil plugin and a Galil Motion Controller... Does anyone else know of any other options?

[Battwell]

double check the servo drives manual to see if they will work in position mode.
if so you are good.

there are more than 1 way to "skin a cat"
there are step/direction to analog converters available
or you can do this directly with a galil controller with enough axis available. (choose ethernet)
i have tested with galil via uccnc using the galil gearing function to achieve this. (only on servo test to see if it was possible- not tested on a real machine)
video of it working here https://youtu.be/kQV5dGQltpU
i can supply galil controller if you choose this route as ive used them in lots of machine conversions for old biesse , ortza etc etc. i have a few in stock still.
il be honest- this is over 5 years ago id have to see if i can find my notes to remember how i did it ! maybe il have to drink a few beers to remember!

uc300 eth will have enough io to run this machine. (but its not going to be a trivial task)

otherwise another option is swap out the motors/drives for newer servos with position mode support.

[Battwell]

https://www.cnczone.com/forums/showthre ... /Direction

[Robertspark]

Ok I did a lot more digging.
...
So I think the only thing I could find is to use MACH 4 (bummer) with the Galil plugin and a Galil Motion Controller... Does anyone else know of any other options?

linuxcnc would be another option with Mesa controller cards for analogue servos. something like a 7i97. if you want to run closed loop. no problem just add another card

note Mesa cards are a bit short supply (it depends on the card) due to FPGA chip shortages so in some cases they are changing the chips and denoting the cards with suffix S. all the design and manufacture is in house and the owner is very active on the linuxcnc forum. just another option for you to consider at least

[me1029134]

Thank you. That's a good option. I'll look into that more. Thank you!

[Dennis CNC]

I'm doing a Anderson 5ft x 10ft twin table router retro.
Its a 20k lb machine was project just to move it my shop.

All machines that I retrofit for my business I always buy new servos and spindle drives then I know everything should run for 5 plus years.

I have used about 60 clearpath servos for new machines I build all have been running up to 6 years.

On this big router will use the 4 hp clearpath servos also. Making a coupler adapter for direct drive on x ballscrew for a test run next week.

Would recommend you buy all new servos.

[me1029134]

Thanks for the tip. Interesting, I never really thought those clearpath motors looked very reliable. I always thought putting the motor and controller in the same package was a bad idea since vibrations on drive could add to drive damage and thermals from the motor and controller are on the same unit making it hard to cool properly. I probably need to give them a second chance as I'm sure you they have worked out the bigs but now. Good suggestion, thank you! Very cool that they make them in a 4hp size. That's very useful and super easy to integrate since it's all in one unit. That makes a lot more room in the cabinet.

[Dennis CNC]

Here is pictures of big motor comparison to nema 34 motor.

And also what environment the motors are in all day everyday.

Clearpath has option for maintaining actual position of last pulse signal.
If e-stop was pushed when machine is moving full G00 speed the machine will push motor and over run actual position on screen. Once motor drive power 75v dc for small motors or AC for big motors is restored motor will rotate back to actual position of the last step signal so it almost like closed loop system. And motor will not output in position OK signal till gets to that last know position. I use that signal to report servo error message until motors are in position. Also if motor drive voltage is not present just the logic supply 24v and you rotate motor by hand it will return to starting point once drive voltage is applied.