Analog output problem Acorn CNC12

All things related to the Centroid Acorn CNC Controller

Moderator: cnckeith

Post Reply
quartter
Posts: 3
Joined: Tue Oct 26, 2021 7:49 am
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: E062347D83BD-0702214897
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Analog output problem Acorn CNC12

Post by quartter »

Hello all!

When i was tested Acorn board standalone analog output gives 0-10V range, after installation output range reduced to 0-4.87V in 0-100% and 5.47V 100%-200% in software. Board was installed to Wabeco CC6000-HS lathe with Leadshine DMA860H drivers. Internal logic of Wabeco's spindle native 0-10V and in manual mode controlled by resistor 100 kOhms and works fine, with Acorn board i'm use relay board to switch wires from native resistor to analog output. Where is the problem?
Attachments
report_E062347D83BD-0702214897_2021-10-26_14-45-30.zip
(626.63 KiB) Downloaded 48 times
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: Analog output problem Acorn CNC12

Post by tblough »

It appears that the Wabeco's low impedance is loading down the Acorn's 0-10V output. You might try a 0-10V signal isolator and see if that works. Hard to tell for sure without a wiring diagram of your setup and a manual on the Wabeco drive.
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.
quartter
Posts: 3
Joined: Tue Oct 26, 2021 7:49 am
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: E062347D83BD-0702214897
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: Analog output problem Acorn CNC12

Post by quartter »

I'm disonnecting everything from Acorn board and try spindle bench test one more time and it's failed: maximum 5.4V :cry:
upd: input from power supply to the board is 23.64, so i think it's ok
Upnorth
Posts: 237
Joined: Wed Apr 01, 2020 8:23 am
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: 1702
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: Analog output problem Acorn CNC12

Post by Upnorth »

Check in the wizard to make sure that the acorn is not set to 0-5 volt output instead of 0-10.
cnckeith
Posts: 7164
Joined: Wed Mar 03, 2010 4:23 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: Yes
Oak CNC controller: Yes
CNC Control System Serial Number: none
DC3IOB: Yes
CNC11: Yes
CPU10 or CPU7: Yes
Contact:

Re: Analog output problem Acorn CNC12

Post by cnckeith »

fyi...i moved this tech support request thread to the Acorn forum out of the knowledge base
Need support? READ THIS POST first. http://centroidcncforum.com/viewtopic.php?f=60&t=1043
All Acorn Documentation is located here: viewtopic.php?f=60&t=3397
Answers to common questions: viewforum.php?f=63
and here viewforum.php?f=61
Gear we use but don't sell. https://www.centroidcnc.com/centroid_di ... _gear.html
quartter
Posts: 3
Joined: Tue Oct 26, 2021 7:49 am
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: E062347D83BD-0702214897
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: Analog output problem Acorn CNC12

Post by quartter »

cnckeith wrote: Tue Oct 26, 2021 4:51 pm fyi...i moved this tech support request thread to the Acorn forum out of the knowledge base
Thank you, practically 5V give me 1000rpm rotation of spindle (if encoder count correct :)
thats mean that Wabeco's spindle control have non linear parameter of rising voltage: it start rotating from 2V, 5V is 1000rpm, 5.4V 1150 rpm.
so it's more or less enought for most operations with metal, but i don't know for CNC12 what parameter is main for threading for example: encoder counts or basically some rpm value that if not reach program will fault?
cnckeith
Posts: 7164
Joined: Wed Mar 03, 2010 4:23 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: Yes
Oak CNC controller: Yes
CNC Control System Serial Number: none
DC3IOB: Yes
CNC11: Yes
CPU10 or CPU7: Yes
Contact:

Re: Analog output problem Acorn CNC12

Post by cnckeith »

Need support? READ THIS POST first. http://centroidcncforum.com/viewtopic.php?f=60&t=1043
All Acorn Documentation is located here: viewtopic.php?f=60&t=3397
Answers to common questions: viewforum.php?f=63
and here viewforum.php?f=61
Gear we use but don't sell. https://www.centroidcnc.com/centroid_di ... _gear.html
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: Analog output problem Acorn CNC12

Post by tblough »

If you are only getting 5V out of the Acorn analog out without anything connected, you may have damaged the output circuitry. Centroid offers a swap-out service for these cases: https://www.centroidcnc.com/centroid_di ... ranty.html
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.
Post Reply