Acorn output states not changing. Possible fried Acorn?

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AnnArborNate
Posts: 62
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Acorn output states not changing. Possible fried Acorn?

Post by AnnArborNate »

Morning everyone. Happy holidays!

I have been working on getting my lathe running with an Acorn and Delta ASDA-B2 drives.

for the moment, the Z is the only axis I have hooked up. Actually, its not wired into the acorn right now, as I discovered that the Z would only move in one direction. Having read alot on the forum yesterday, I suspect I have an issue with the acorn, as I cannot get any output states to change for step/direction.

I tried assigning direction and step to the DB25 connector (I have a breakout on this) and was not able to make output states change.

I have ordered another acorn this morning, as I suspect I damaged it. But in the time being, I would like to know if it looks like I am on the right track with thinking i damaged the acorn.

I am attaching my fresh report from yesterday.
Attachments
report_0CB2B7D5895C-0611203420_2020-12-24_10-06-39.zip
(579.76 KiB) Downloaded 141 times
martyscncgarage
Posts: 9912
Joined: Tue Mar 28, 2017 12:01 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: Yes
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CNC Control System Serial Number: none
DC3IOB: No
CNC12: Yes
CNC11: Yes
CPU10 or CPU7: Yes
Location: Mesa, AZ

Re: Acorn output states not changing. Possible fried Acorn?

Post by martyscncgarage »

AnnArborNate wrote: Thu Dec 24, 2020 10:59 am Morning everyone. Happy holidays!

I have been working on getting my lathe running with an Acorn and Delta ASDA-B2 drives.

for the moment, the Z is the only axis I have hooked up. Actually, its not wired into the acorn right now, as I discovered that the Z would only move in one direction. Having read alot on the forum yesterday, I suspect I have an issue with the acorn, as I cannot get any output states to change for step/direction.

I tried assigning direction and step to the DB25 connector (I have a breakout on this) and was not able to make output states change.

I have ordered another acorn this morning, as I suspect I damaged it. But in the time being, I would like to know if it looks like I am on the right track with thinking i damaged the acorn.

I am attaching my fresh report from yesterday.
Since you started a new post. You will have to refresh us as to what you are using for drives and motors, the machine etc.
Its hard for me to remember what I did yesterday let alone all the forum users configurations! :D

Merry Christmas and & Happy New Year/Happy Holidays!
Marty
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
AnnArborNate
Posts: 62
Joined: Mon Jun 29, 2020 6:18 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC12: No
CNC11: No
CPU10 or CPU7: No

Re: Acorn output states not changing. Possible fried Acorn?

Post by AnnArborNate »

Shoot. Sorry about that.

Machine 1955 Monarch 10ee air tracer model.
gutted machine.
baldor VFD 7.5hp 3ph with 7.5hp 3ph 1200rpm motor running reduced to spindle(approx 3:1) (built purposefully as a lower rpm lathe.)
power via 3phase rotary convertor. American rotary 20HP.
spindle motor coupled to spindle via timing belt.
Dynapar encoder belted to spindle, not motor.

Z and X retrofitted with ballscrews.

Z and X reduced via timing belt approximately 2:1

Delta ASDA-B2 servo drives with the paired 750W motors. bought new.

VFD and Delta drives are supplied with three phase 220V.

Acorn (recent) now suspect.

standard power supplies for acorn etc.

VFD (not interfaced with acorn) fully operational.
Spindle encoder working fine.
both delta drives wired and jogging perfectly. tuned via software.
I did follow the centroid acorn asda BA series drives hook up schematic. I will have to go through all of this again, as I am needing to check parameters on the drive again. Sometimes they would seem to change through deltas ASDA software and sometimes not. I also am concerned that the parameters may differ between the delta asda-BA and the asda-B2 series which are the newer series that I have.

Acorn and CNC12 are operational and licensed with the pro version of the lathe cnc12. I was able to get as far as having an operational estop and then I could only get the delta drive for Z to turn the Z motor in one direction.

Thinking it may have been the connector cable I made to run from the acorn to the delta inputs, I removed the cable and checked with a DC meter to see if I had outputs working on the acorn before I checked the cable. Low and behold, I do NOT have functional outputs on the acorn.

I will note that the acorn has com with cnc12 and seems fully operational save for outputs. The spindle encoder and e stop are working fine. cnc12 always finds the acorn no problem.

Long and short of it is I am thinking I cooked something on the acorn that is output related. Any thoughts?

Thanks so much.
Nate.
martyscncgarage
Posts: 9912
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Location: Mesa, AZ

Re: Acorn output states not changing. Possible fried Acorn?

Post by martyscncgarage »

I remember your project now. Don't you have a thread started already?
Hard to say about Acorn without connecting a basic stepper drive and motor or an Oscilloscope to it....
Marty
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
AnnArborNate
Posts: 62
Joined: Mon Jun 29, 2020 6:18 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC12: No
CNC11: No
CPU10 or CPU7: No

Re: Acorn output states not changing. Possible fried Acorn?

Post by AnnArborNate »

I have a geckodrive G213v stepper drive, 70vdc ps and a stepper. I will try that and see.

I have an oscilloscope, but only the faintest idea on how to use it. Its a 100mhz digital techtronics.
AnnArborNate
Posts: 62
Joined: Mon Jun 29, 2020 6:18 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC12: No
CNC11: No
CPU10 or CPU7: No

Re: Acorn output states not changing. Possible fried Acorn?

Post by AnnArborNate »

Just wanted to post an update to this issue.

I installed a new acorn, and decided to triple check my wiring from the acorn to the Delta Servo drives. I had two pins incorrect.

Once fixing the pins, I am fully functional. Went back to the original acorn and it works perfect.

Furthermore-
I installed the centroid MPG and Ether 16. Both installed easily.

The pendant is AWESOME!

very very pleased with the performance of these delta drives/motors (750w)
martyscncgarage
Posts: 9912
Joined: Tue Mar 28, 2017 12:01 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: Yes
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC12: Yes
CNC11: Yes
CPU10 or CPU7: Yes
Location: Mesa, AZ

Re: Acorn output states not changing. Possible fried Acorn?

Post by martyscncgarage »

AnnArborNate wrote: Sat Jan 02, 2021 10:41 am Just wanted to post an update to this issue.

I installed a new acorn, and decided to triple check my wiring from the acorn to the Delta Servo drives. I had two pins incorrect.

Once fixing the pins, I am fully functional. Went back to the original acorn and it works perfect.

Furthermore-
I installed the centroid MPG and Ether 16. Both installed easily.

The pendant is AWESOME!

very very pleased with the performance of these delta drives/motors (750w)
Which two pins did you have incorrect Nate?
Glad you got it worked out! Thanks for bringing closure to your issue.
Would be nice if you posted a schematic(IF it differs from the Centroid Schematic), parameters for your Delta Drive and working report. It may well help the next person.
Marty
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
AnnArborNate
Posts: 62
Joined: Mon Jun 29, 2020 6:18 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC12: No
CNC11: No
CPU10 or CPU7: No

Re: Acorn output states not changing. Possible fried Acorn?

Post by AnnArborNate »

"Which two pins did you have incorrect Nate?
Glad you got it worked out! Thanks for bringing closure to your issue.
Would be nice if you posted a schematic(IF it differs from the Centroid Schematic), parameters for your Delta Drive and working report. It may well help the next person.
Marty"

I will be happy to post a detailed report later today. I will include backup files and my servo drive perameters that I ended up with. The Acorn ASDA-A Delta Servo tech Bulletin #303rev1 perameters were not correct. But I managed to get perameters edited and everything seems good. Great in fact! AC servos are incredible compared to steppers.
martyscncgarage
Posts: 9912
Joined: Tue Mar 28, 2017 12:01 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: Yes
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC12: Yes
CNC11: Yes
CPU10 or CPU7: Yes
Location: Mesa, AZ

Re: Acorn output states not changing. Possible fried Acorn?

Post by martyscncgarage »

AnnArborNate wrote: Sat Jan 02, 2021 12:25 pm "Which two pins did you have incorrect Nate?
Glad you got it worked out! Thanks for bringing closure to your issue.
Would be nice if you posted a schematic(IF it differs from the Centroid Schematic), parameters for your Delta Drive and working report. It may well help the next person.
Marty"

I will be happy to post a detailed report later today. I will include backup files and my servo drive perameters that I ended up with. The Acorn ASDA-A Delta Servo tech Bulletin #303rev1 perameters were not correct. But I managed to get perameters edited and everything seems good. Great in fact! AC servos are incredible compared to steppers.
Yes, servos are far superior to steppers and having your wiring diagrams, parameters and the report will help someone else.
Where did you source the drives and motors?
Marty
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
Black Forest
Posts: 345
Joined: Thu Nov 23, 2017 1:39 pm
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Re: Acorn output states not changing. Possible fried Acorn?

Post by Black Forest »

I for one will be very interested in knowing your complete setup as I intend on using Delta drives and motors on an upcoming project.
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