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SSR with blackbox to power router

Discussion in 'Controller Boards' started by Richard Stevens, Oct 8, 2020.

  1. Richard Stevens

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    Hey,

    I have spent quite some time to find an answer in the forums, unsuccessfully though. Hope this has not been answered already.

    I plan to build something similar to the IOT power thingy which seems to be only available with North American plugs.

    Would a solid state relay connected in the same way as the IOT Power bar work? So PWM and GND to the Input of the SSR switching the router power? If thre's really PWM on the output, I'm wondering what that does to the SSR.

    Another readily available solution that supports CEE 7/7 plugs would also work.

    Thanks,

    Richard
     
  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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  3. Richard Stevens

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    Thanks for the quick response. Guess I need to continue searching then.

    The reason I was considering to build my own is because so far I wasn't able to find something similar.
     
  4. Giarc

    Giarc OpenBuilds Team
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    For my own knowledge, is this what you are discussing? If so I need to buy another IOT switch. I had one of these from when I first built my CNC several years ago and never got around to installing it. I thought I could use it for the dust collector, but I may have thought wrong. o_O
    upload_2020-10-8_20-46-58.png
     
  5. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Most common SSRs are unsuitable yes.
    - leakage current on the common Omron ones are so much, the LEDs on the Dewalt stays on all the time
    - the back EMF from an induction motor kills the triac inside in no time
    - some cannot cope with the power-on surge current draw

    Check industrial automation vendors. Some kind of mechanical relay or contactor that takes a 5v 20mA max signal. (cant drive a relay coil directly).
     
    #5 Peter Van Der Walt, Oct 9, 2020
    Last edited: Oct 9, 2020
  6. JustinTime

    JustinTime Veteran
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    Does that include VFD? I just set up a connection for my VFD with one of those yesterday! I didn't try it yet so I can't say how good it is but if it's trouble in the future I may just not continue with it.
     
  7. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    I havent tested it with a VFD, but i would say "why" as the VFD already does the switching for you
     
  8. Giarc

    Giarc OpenBuilds Team
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    Thanks. It will be easier for me to stick with the IOT switch, both price wise and for the ease of availability. The fact I know it works helps as well since I already have one for my existing CNC.

    Right now I went improvised for turning my vacuum on an off. I bought a two pack of Amazon Echo buttons last year. I used one in my bedroom so I could turn off every light at one time in the house at night because my kids would leave some on. The second I pun next to the computer that is hooked to my CNC. I just push the button to remotely turn on vacuum. It is not ideal, because you have to press the button "long enough" for it to come on and stay on. Too long or two short and it comes on and turns right back off. But it still beats walking over to the switch every time. ;) To be honest, I could use the IOT for that too, but that would require me running another set of wires and I plan to do a significant modification to the CNC soon. Therefore, I would have to redo it all over again.
     
  9. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    And easier to explain to your insurer if the house burns down (;
     
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  10. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    You have link for these?
     
  11. JustinTime

    JustinTime Veteran
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    LOL, ignorance is bliss! Only after reading your comment did a light go on in my head. I googled my VFD and lo and behold the third option was a link to OpenBuilds! There is already a thread about my VFD I had just missed in the past. :banghead: :banghead:

    Manuals? What Manuals? What are Manuals? :):)
     
    #11 JustinTime, Oct 10, 2020
    Last edited: Oct 10, 2020
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  12. Giarc

    Giarc OpenBuilds Team
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    Rick 2.0 likes this.
  13. Bourdua

    Bourdua New
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    What is the actual voltage out from the blackbox controller?

    I’m looking at connecting the blackbox output to a mechanical 8 pin relay rather than use 2 IOT relay strips to power the router and the shop vac via 2 power sources.

    My question is: Will a typical mechanical relay work off of the blackbox output (based on the output voltage of the blackbox)? Are you aware of any reason as to why I shouldn’t do it this way?

    https://www.amazon.ca/dp/B00E0NTPP4/ref=cm_sw_r_cp_api_i_DvlKFbA8M6DA2
     
    #13 Bourdua, Oct 21, 2020
    Last edited: Oct 21, 2020
  14. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    The output is 5v max 20mA. Never drive a relay directly with that, its a logic output and will get destroyed if you try powering a mechanical relay directly off the microcontroller pin.
    It can be used to control a logic circuit in front of a relay

    The amazon link relay is inadequate for powering a router (same ones we have inside the BlackBox that we have in there as a Plasma trigger). Get in a Sparky that understands these things. Their fee is a lot cheaper than buying a new house or burying a family member when something goes wrong
     

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