Centroid Community CNC Support Forum

Thanks, will do that on my machine and do it for the Plasma machine.

Question: Building a Plasma CNC machine: Two power supplies are used for the Plasma system, one for the Acorn board and THC RX and a separate +24VC for the Plasma THC TX board. Should the common on each power supply be connected to chassis at each power supply? I also have two separate power supplie...

Product in video (link repeated below) is one of a set of 7 embroidery tools that I make. I also make many types of Lacemaker's tools as well. All can be seen on my web site: http://richardpikul.com/ I don't really have a use at present for the rev 4 relay board at this time, will keep it in mind if...

Did not want to claim successful operation too early, so ran the CNC machine for a couple of days of production first. All works, just like it did before the Acorn board failed (probably my fault...). Some photos of my CNC machine and a video showing what was being made yesterday are available here:...

I was not sent the relay board/ribbon cable with the replacement board. At this time I do not have a use for it. Found the original Centroid note re using separate +5VDC and +24VDC power supplies. It states: "Acorn PCBs revision 171025 and older may fail to start properly if external voltage is...

+5VDC is connected to the following drive connections: +Pul, +Dir and encoder feedback connector VCC (pin 4). Not using enable. On the Acorn original version I have been using, RL1 closes if E stop is released. Had a good look at the drive manuals from Leadshine and Aut. Tech.: Am I correct in assum...

+5VDC is power only to the KL-8082H drive encoder circuitry. On the Acorn Rev. 2 board (my original), if +5VDC is connected to the drive encoder circuitry before Acorn is 'ready', this somehow prevents the drive from operating. Existing +5VDC connection: +5VDC from power supply wired to connector H7...

History: Feb. 2018 connected Acorn board, found that it would not control drives. With Marty's garage help, discovered that +5VDC to drives cannot be turned on until Acorn is powered up Solution: +5VDC power to drives routed through RL1 on Acorn board, ensuring that Acorn is powered up before +5VDC ...

O.K. - I'm ashamed of myself. . . Spent years designing power supplies and power supply systems, I made a novice mistake. I daisy chained the chassis grounds of the +24V and +5V power supplies and connected the chassis ground from the Acorn board to the +24V chassis ground (see photo 1). I'm blaming...

Interesting. I will have to check all power supply grounds and chassis grounds before I put in the new PCB.