New Build Thread - Retrofitting Yeti Smart Bench CNC

[bendw]

Retrofitting a Yeti Smart Bench CNC..

I purchased the machine less than 2 years ago. One day I fired it up to cut a project and it wouldn't home. Problem seemed to be a limit switch at first but after replacing, it became evident that the control system was not interpreting continuity correctly.. When I tried to obtain support, I came to find out that the company had gone into bacnkruptcy. The assets were acquired by another party but there is no telling when the parts will become available again, hence the retrofit.

[bendw]

I have 5 motors total. My current strategy is to use 2 DB25 cables with DB25 to Phoenix blocks on each side to get from the cabinet to the machine..

Power cable extensions or the motors will be the native connectors..

Dust extractor relay will be on its own connector.

Does this seem like it will cover the bases? What am I missing?

[cnckeith]

please post link to photo album of the machine and electricals! so we know what you got! and can help you.

[centroid467]

These are the signals going to the motors from the drivers? I'd be wary of the motor signals coupling to the other connections in the cables.

Also, make sure to connect the cable shields on one side. I'd do the cabinet side.

[ShawnM]

Agreed, run shielded cables for the drive signals. One cable for each drive. Ground that shield inside your electrical cabinet to a common bus bar. If they are closed loop drives they have their own encoder cables. We need to know much more to give you better help.

DB25 cables are typically too high of a gauge, typically 28 gauge, to use for drive signal wires. Not a good idea.

[richardb15]

Looking forward to seeing it come along. DB25 connectors are okay for signals but I wouldn't put the drive power through the same DB25 as that is asking for interference, being within the connector housings you don't have shielding. I'm not sure of the current rating of a DB25 pin either, not much I expect! I always run the motor power wires through a separate connector, GX20's or similar work fine and are cheap plus readily available.