So I picked up a dust collector and was initially happy to see in the manual that it only required 7.5amps to operate. Great, I’ll power it through through the Vacuum outlet on the onefinity. That didn’t last, the fuse was promptly blown because the motor startup current was more than it could handle.
Since I really wanted to control it via the flood coolant setting on the Masso, I sourced a solid state relay (SSR) to make my own dust collector control that was activated by the onefinity vacuum port. Finished my prototype today and it works so I thought I would share. This will work for 120V or 220V powered dust collectors at any current requirement up to 20 amps (25 amp startup).
I would recommend that if you want to try this and you don’t know what you’re doing with electrical work, to find someone who can do it for you as you wouldn’t want to burn your shop down or worse, electrocute yourself.
Edit: Noticed that the drawing that was a SVG wasn’t showing up. Removed and replaced it with a PDF version.
I’m not sure that it makes any difference in this application but I just wanted to add that I did use some CPU thermal transfer paste between the SSR and it’s heatsink when I assembled them. I don’t have a link to the paste that I used as it’s just something that I had picked up locally.
Thanks. This is great info Don. Is your enclosure plastic or metal? Any concerns with heat melting it? Was that also an Amazon item? (Or do you have a link to the box you used?) TIA.
Hi Bruce, the box and faceplate are 3d printed with ABS and the box has vent slots on two sides. It’s designed to be mounted with the slots at the top and bottom to facilitate air movement through it.
So far I have about 10 hours running it with the longest session about 4 hours. The box wasn’t even warm to the touch after my 4 hour run and I’m pretty sure the SSR would fail from any excessive heat long before the ABS would melt.
The step files for the box and faceplate are included in my original post. You can use those to print your own box or as a starting point to create your own design. No restrictions on using them for whatever purpose you want. They are my design so you can consider them completely open source.
Thanks for the info. I don’t have a 3d printer so I think I’ll grab the relay and head to a box store to find an appropriate size box to put it in. Thanks again.
