Centroid Community CNC Support Forum

[Edited schematic to show the correct latch circuit path]

Here's a schematic for a simple latching circuit. The latch (X terminals) can be an unused circuit on a relay or contatctor, or the auxiliary switch circuit on a contactor. ( The relay/contactor coil uses "high-side" switching similar to ...

You can easily purchase 24VDC fans that are the same size as your existing 5VDC fans. A 24VDC fan can be powered by the same power supply that powers the Acorn. In that way, if the Acorn is on, the fans would be on.

I've installed auxiliary fans in Mikrotik network routers. Before installing the ...

Here's a simple schematic based on the schematic that Gary posted that shows one way to wire a SSR to control a motor or other AC load. The Double Pole Single Throw switch can be any of the relays on the Acorn relay board or one of the relays on the 16x16 I/O expansion board. When the DPST relay is ...

Be aware of the current carrying capacity of each wire and of the screw terminal block or WAGO lever nuts. Also, consider using spade or ring terminals on your wire. To prevent stress cracks/breaks, many builders use stranded wire that is more flexible than solid wire. I use 22-18 gauge stranded ...

What size motors can that AB 525 handle? The drive I'm looking at online has an output capacity of 2.5A, which is about 0.4 hp. You wrote that your manual lathe has a 10 hp motor.

Yes. You're correct. That error got away from me. I've corrected the schematic and re-uploaded the file so that it's correct in the original post.

Sometimes we don't understand why a circuit is rated with "typical" or "average" current and also "maximum" current. A chip is rated to handle a maximum current flow. While each pin on that chip may be able to handle 30% or even 50% of the chip's maximum current, if ALL pins conducted at or near the ...

The Acorn spec sheet shows that the DB-25 LOW or HIGH current is 20mA max and 3mA typical. The 24V Open-Collector current is 50mA max and 10mA typical. I usually allow 10mA per opto-coupler. Opto-couplers are commonly used in stepper driver step/direction inputs.

IMPORTANT: Part numbers are for ...

Here's what I do. I use a NUK computer with my Taig mill. The NUK has both a RJ45 ethernet connector and a WiFi interface. I use the RJ45 ethernet connector for the Acorn and I use the WiFi connection ONLY when transferring a file from my personal network to the NUK. When I'm operating the Taig mill ...

Interfacing a 12V device to work with the Acorn is not complicated, needing only an opto-coupler, a few resistors, a diode, and a transistor; but, to be reliable, you would have to have a circuit board made. It doesn't make a lot of sense to design a new circuit board when you can buy a sensor that ...