Cnc12 setup , Delta ASD-B2

[usinart]

Hi Centroid tech, I just communicate with Delta electronic tech service for knowing somme information about my ASD-B2 motor /drive that I have .
The information the send me I really don't know what to do with it .If I understand it , it the # of pluse my drive has to send to make my 4010 screw to make 1 turn so 10mm.
If I transfert it with you and me and cnc12 what should do with that number (4064 pulse/puu).
The thing my system was working but I had to swamp my acorn card due to a electrical problem and I did not wright what drive was located .So I have to start form scratch.
info on system (3 ball screw 2510 , 4010 and 2005 . Drive/motor( https://deltaacdrives.com/delta-ecma-e2 ... rvo-motor/) on each axes. Poulies ratio is 1 : 1 and table 5' by 9')
How should setup my cnc12 wizard for making the system run at lease 500 in/min .

Can you help me and other in the same situation ?
Do you need more information or data .
thanks

[centroid467]

Ok, so you are looking for cutting feedrates or rapids of at least 500 inches/minute? What is the desired positioning resolution?

Assuming you are wiring these to the open collector outputs, you are limited to 200,000 pulses/second. The motor seems to be rated for 2000 RPM continuous and 3000 rpm max.

I am assuming the Z axis is on the 20mm diameter, 5mm lead screw so we'll deal with that last.

Setting the drive to take 8192 steps/rev with the 10mm lead gives 576.7 maximum commanded feedrate at 1465 RPM from the motor. You'd get a positioning resolution of 0.000048 inches/step (0.00122 mm/step).

If I remember correctly, the 17-bit encoder used on the Delta B2 series has 160,000 counts/rev. So, set P1.044 to 160,000. Set P1.045 to 8192. Set the steps/rev in the Wizard to 8192.


For the Z axis with the 5mm lead, to keep the same rapid speed and positioning resolution, you would set P1.044 to 160,000 as before but set P1.045 to 4096. Set the steps/rev in the wizard to 4096.

[usinart]

Hi centroid 467, Delta send me somme information that YOU find useful .

[centroid467]

Hello,

The drive parameter and Wizard settings I gave will work with the Acorn and CNC12 to produce your desired speeds while staying in the motor's continuous speed rating.

The Delta customer support information seems useful when you are intending to have a certain quantity of input pulses (PUU) correspond to a specified amount of linear motion. It makes sense to do this when using a PLC or some other device for simple positioning control. This is not necessary with the Acorn because CNC12 will handle the motion control.

The settings provided by the Delta customer support staff will not be very good for machining operations because of the four thousandths of an inch positioning resolution they cause.


Please set P1.044 to 160000 and P1.045 to 8192 for the axes with the 4010 and 2510 screws. Set in the Wizard that they take 8192 steps/rev.

[suntravel]

This is a default precision/speed calculation for Pul/Dir drives...

I would use line drivers with Acorn, or better Acorn Six with the differential expansion board to run the Deltas with 400 khz for a better resolution at the desired speed with 10mm pitch ball screws.


Uwe

[suntravel]

Results of my spreadsheet:

You should also consider the critical rpm of your ball screw, depending on diameter / length / type of bearings

Uwe