Search found 9912 matches
- Wed Jan 19, 2022 8:52 pm
- Forum: Centroid Acorn CNC Controller
- Topic: why does centroid never remember its coordinate/home
- Replies: 23
- Views: 4479
Re: why does centroid never remember its coordinate/home
Homing to an index pulse on a servo motor like a DMM and DYN2 or DYN4 helps with lathes. There are very few drives that give this output to the user.... putting a very precise proximity sensor over the ballscrew pulley is another method. Emco did this for quite some time on their stepper driven lat...
- Wed Jan 19, 2022 7:36 pm
- Forum: Centroid Acorn CNC Controller
- Topic: Wiring Confirmation
- Replies: 36
- Views: 5919
- Wed Jan 19, 2022 5:30 pm
- Forum: Centroid Acorn CNC Controller
- Topic: why does centroid never remember its coordinate/home
- Replies: 23
- Views: 4479
Re: why does centroid never remember its coordinate/home
Homing to an index pulse on a servo motor like a DMM and DYN2 or DYN4 helps with lathes. There are very few drives that give this output to the user.... putting a very precise proximity sensor over the ballscrew pulley is another method. Emco did this for quite some time on their stepper driven lath...
- Wed Jan 19, 2022 12:18 pm
- Forum: Centroid Acorn CNC Controller
- Topic: Motors are winding out on rapid moves
- Replies: 17
- Views: 3174
Re: Motors are winding out on rapid moves
I asked Bill to post pictures and label of his stepper motors to see what he has...
Bill?
Bill?
- Wed Jan 19, 2022 12:17 pm
- Forum: Centroid Acorn CNC Controller
- Topic: Motors are winding out on rapid moves
- Replies: 17
- Views: 3174
Re: Motors are winding out on rapid moves
From Sherline this morning: Marty and Bill, The max feed rate with our stepper motors and drive box is 32 in/min. In the video it looks like Bill is exceeding the max feed rate on his finish pass. In addition to this. Stepper motors have the highest torque at the lower feed rate. As you increase th...
- Wed Jan 19, 2022 12:15 pm
- Forum: Centroid Acorn CNC Controller
- Topic: Wiring Confirmation
- Replies: 36
- Views: 5919
Re: Wiring Confirmation
120V or 240V? 120V only the hot needs to go through the contactor 240V both hots need to go through the contactor In either case, it frees up a contact for you to use for C86ACCP No Fault This is why we ask you for pictures. We can not "SEE" what you "SEE" Thank you for posting t...
- Wed Jan 19, 2022 10:59 am
- Forum: Centroid Acorn CNC Controller
- Topic: why does centroid never remember its coordinate/home
- Replies: 23
- Views: 4479
Re: why does centroid never remember its coordinate/home
I have said the same thing in the past. The board needs a battery and some memory so that retains it's position from the last session so it thinks power was never turned off to it. Then you wouldn't have to rehome and set your part zeros and such. It would save a massive amount of time for us hobby...
- Wed Jan 19, 2022 10:58 am
- Forum: Centroid Acorn CNC Controller
- Topic: Wiring Confirmation
- Replies: 36
- Views: 5919
Re: Wiring Confirmation
S15117 is depicting 3 phase motor power connections requiring 3 contacts (L1,L2,L3), if the motor power is single phase 120vac then only the line lead (hot) would need to be routed through the E-stop contactor leaving the other contacts available for other circuits. Earth ground should never be rou...
- Wed Jan 19, 2022 10:14 am
- Forum: Centroid Acorn CNC Controller
- Topic: Wiring Confirmation
- Replies: 36
- Views: 5919
Re: Wiring Confirmation
The jist of all of this is you need another pair of contacts to close the C86ACCP IF you are using all 4 contacts on your current contactor.
Take a picture of your contactor and sketch how you have it wired and post it here please
Take a picture of your contactor and sketch how you have it wired and post it here please
- Wed Jan 19, 2022 10:10 am
- Forum: Centroid Acorn CNC Controller
- Topic: Wiring Confirmation
- Replies: 36
- Views: 5919
Re: Wiring Confirmation
All relays should have a snubber. Some relays have flyback diodes built into them. (I drew it in as a matter of being consistent with the Acorn schematic) I am not sure what is confusing you. You simply add another small relay, you PARALLEL the coils of the two relays together, so that they are both...