Help with Eumach MC-800P retrofiting to OAK.

All things related to Centroid Oak, Allin1DC, MPU11 and Legacy products

Moderator: cnckeith

cncsnw
Posts: 3763
Joined: Wed Mar 24, 2010 5:48 pm

Re: Help with Eumach MC-800P retrofiting to OAK.

Post by cncsnw »

OUT15 and OUT16 relate only to spindle drive control, not servo drive control.

The PLC program you are using should automatically select an alternate stage for spindle speed control (STG81) any time you have OUT15 set to select a bipolar analog range.

Again, that only affects spindle RPM control, not servo control.
jhlarsen
Posts: 22
Joined: Mon Jan 18, 2021 6:19 pm
Acorn CNC Controller: No
Allin1DC CNC Controller: No
Oak CNC controller: Yes
CNC Control System Serial Number: 0008DC111213-1202201060
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: Help with Eumach MC-800P retrofiting to OAK.

Post by jhlarsen »

You are right, i have fixed it now.
Now my problem is getting the +-10V to drive the servo...
jhlarsen
Posts: 22
Joined: Mon Jan 18, 2021 6:19 pm
Acorn CNC Controller: No
Allin1DC CNC Controller: No
Oak CNC controller: Yes
CNC Control System Serial Number: 0008DC111213-1202201060
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: Help with Eumach MC-800P retrofiting to OAK.

Post by jhlarsen »

How can i get the axis header to output +-10V?
cncsnw
Posts: 3763
Joined: Wed Mar 24, 2010 5:48 pm

Re: Help with Eumach MC-800P retrofiting to OAK.

Post by cncsnw »

Put non-zero values in your PID gains.

I suggest starting with Kp = 0.01, and Kv1 = 80. You can leave the rest of the gains at zero to start out with.
jhlarsen
Posts: 22
Joined: Mon Jan 18, 2021 6:19 pm
Acorn CNC Controller: No
Allin1DC CNC Controller: No
Oak CNC controller: Yes
CNC Control System Serial Number: 0008DC111213-1202201060
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: Help with Eumach MC-800P retrofiting to OAK.

Post by jhlarsen »

I did put those values in and i got the servo vibrate and it did not stop after a jog move forcing me to use the E-stop. Did not have time to play around with it more, so i will do some more testing today. Any idea what to do when it vibrate but not moving?
Screenshot_20210903-095239_Gallery.jpg
The Simodrive do have those ajustment. Do i leave those "factory tuned" or do i set those to zero and tune it on OAK?
jhlarsen
Posts: 22
Joined: Mon Jan 18, 2021 6:19 pm
Acorn CNC Controller: No
Allin1DC CNC Controller: No
Oak CNC controller: Yes
CNC Control System Serial Number: 0008DC111213-1202201060
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: Help with Eumach MC-800P retrofiting to OAK.

Post by jhlarsen »

How can i turn off the encoder to one axis so i can work with the tuning without getting the position error all the time?
cncsnw
Posts: 3763
Joined: Wed Mar 24, 2010 5:48 pm

Re: Help with Eumach MC-800P retrofiting to OAK.

Post by cncsnw »

To work with just one axis at a time, change the labels of all the other axes to 'N'.

The Centroid control will only enable axes with labels X, Y , Z, U, V, W, A, B or C. 'N' means "not installed", and 'M' means "manually-controlled".

If you get shaking with Kp = 0.01, then try Kp = 0.001 and work up from there.

You probably do not want to change the trim pots on the Siemens drive. If it worked before in analog velocity-mode control with the current trim settings, then it should still do so.
jhlarsen
Posts: 22
Joined: Mon Jan 18, 2021 6:19 pm
Acorn CNC Controller: No
Allin1DC CNC Controller: No
Oak CNC controller: Yes
CNC Control System Serial Number: 0008DC111213-1202201060
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: Help with Eumach MC-800P retrofiting to OAK.

Post by jhlarsen »

Cant get it to run the program so i can start to tune it. The servo just run off and get a y axis position error.
16306946057835784962192786285522.jpg
tblough
Posts: 3072
Joined: Tue Mar 22, 2016 10:03 am
Acorn CNC Controller: Yes
Allin1DC CNC Controller: Yes
Oak CNC controller: Yes
CNC Control System Serial Number: 100505
100327
102696
103432
7804732B977B-0624192192
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No
Location: Boston, MA
Contact:

Re: Help with Eumach MC-800P retrofiting to OAK.

Post by tblough »

Are you sure your encoder is counting in the correct direction? You may need to swap the A and B pairs to get the encoder count to be increasing when the motor is turning clockwise.
Cheers,

Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
jhlarsen
Posts: 22
Joined: Mon Jan 18, 2021 6:19 pm
Acorn CNC Controller: No
Allin1DC CNC Controller: No
Oak CNC controller: Yes
CNC Control System Serial Number: 0008DC111213-1202201060
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: Help with Eumach MC-800P retrofiting to OAK.

Post by jhlarsen »

I did have to swap the leads and now it all works. I have tuned the pid and run the machine test with no issues 🙂
Post Reply