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Thread: Super-PID new low-cost router speed controller

  1. #25
    Community Moderator ger21's Avatar
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    Will the Super-PID allow me to run a 23,000 rpm router at 30,000 rpm?

    An 11 amp router #120V is~1300watts. I'm assuming it won't be drawing the full 11 amps most of the time, so it should be fine?

    Gerry

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  2. #26
    Registered JeremyFisher's Avatar
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    Quote Originally Posted by ger21 View Post
    Will the Super-PID allow me to run a 23,000 rpm router at 30,000 rpm?
    I'm pretty sure that the top speed of AC motors depends on the physical properties of the motor, such as the number of windings in the coil, so no. You will be able to set it to 30,000 RPM but the motor will just reach its max 23,000 RPM.

    It's a bit like a light dimmer, for turning down brightness of lights. You can turn down a 100W globe to shine like a 60W globe, but if you put in a 60W globe, it can only ever shine as bright as a 60W globe, even if the dimmer is set to max.



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    Ger21- Sorry (as JeremyFisher said) the router's max RPM won't be exceeded, provided the labeled max RPM is in fact the no-load RPM. Some router's labeled as 25000 RPM etc will run a bit faster on no-load and light cuts as the official RPM rating is when cutting wood with a cutting bit.

    Re the 11 Amp 1300W router, I have initially specced the Super-PID lower than its calculated limits. The connector, PCB traces, TRIAC etc (all the parts that carry motor current) are rated at 15 Amps or more but I have specced at around 10 Amps for now until the product has undergone significant testing over time.

    When in use, the SuperPID will generally use MUCH less than full power, and it has a power bargraph display on the LCD so you can see the power % anytime it is running. The product was designed specifically for routers up to and including 1200W or so which is a popular size.

    I'm in the final stages of product testing now with the proper PCB (up to now has just been prototype units) and it's all looking good.

    I have borrowed a video camera and if I get time today or tomorrow I'll do a youtube of the product demonstrating the low speed power!



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    Definitely interested in some video of the product at work at different speeds and materials..

    Adam,



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    Gold Member davidmb's Avatar
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    Hi Boltz,

    Have a look at Microchip Technology Inc. is a Leading Provider of Microcontroller and Analog Semiconductors, providing low-risk product development, lower total system cost and faster time to market for thousands of diverse customer applications worldwide., search for PID, they published pid algorithms for use with their range of microprocessors back in 2004, possibly much earlier, I was using pid myself back in 1995 for control of neonatal oxygen controllers.

    Here's a link to a specific doc: http://ww1.microchip.com/downloads/e...tes/00937a.pdf

    David
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    Default ME TOO ! ! !

    Quote Originally Posted by RomanLini View Post
    The product target price was to be under $150 for the fully assembled unit, possibly it could be as low as $120 or $130 but costing is still waiting . . .
    I want one! Please put me on your email list or whatever you are doing to keep track of future customers.

    tjskjr@yahoo.com

    Thanks.
    tjskcnc



  7. #31
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    Thank you tjskcnc, I'll pass that along to Val, the product should be available for sale next week. I'm sure he will announce something soon.

    The new test unit (on the commercial PCB) is working very nicely, and here's a photo of the first 3 units to go out, which should be tomorrow after I run a series of tests on them.

    They are going to Khalid, CarveOne, and Ger21 and have a couple of rough edges because they are not from a "proper" production run yet, like the heatsink brackets were just cut on the chop saw etc. But they are quality units; stainless steel screws, metal film resistors, tantalum caps, plug/socket on LCD, etc etc.

    Attached Thumbnails Attached Thumbnails Super-PID new low-cost router speed controller-spid_x3-jpg  


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    Community Moderator ger21's Avatar
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    Do we need to solder the pot to the board?

    And for Mach3 control, do we not use the pot, but use the same terminals?

    Gerry

    UCCNC 2017 Screenset
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    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)


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    Thanks!

    I'll be looking for it to arrive. Don't worry, the rough edges won't look out of place around my shop.

    CarveOne

    CarveOne
    http://www.carveonecncwoodcraft.com


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    Can't wait to hear the review from Carveone and the others...

    Adam,



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    Gold Member Khalid's Avatar
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    Hi RomanLini,
    Thanks for showing the stuff and i am very excited as in coming months i have to use my Router a lot as we have community Funfair charity show in January..

    We have 220Volts here but the frequency i will tell you tomorrow...
    Thanks and Regards

    http://free3dscans.blogspot.com/ http://my-woodcarving.blogspot.com/
    http://my-diysolarwind.blogspot.com/


  12. #36
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    The units were sent airmail today, apart from Khalid (please PM me with your address Khalid!).

    Ger21- The pot and sensor are supplied and all wired up now (but not in the photo).

    As for running the speed control from Mach3, I'm glad you wanted to test that because it's something I can't do here. The middle wire of the pot goes from 0v to 5v, and that gives speed control of 5000 to 30000 RPM. However it's not totally linear as the scale was carefully adjusted to a semi-log scale to give better "feel" of the pot. It can still be controlled from any 0v-5v analog source if Mach3 has that type of analog output.

    If the Mach3 output is 0v-10v you need to add two 10k resistors as a 2:1 voltage divider, that is easy enough. I'm not sure how mach3 can recalibrate for the semi-log scale though, I'd appreciate if anyone can offer more light on the whole process there. If you need more info I can provide a table showing pot voltage vs set RPM.

    CarveOne- When I said rough edges that's basically saying these initial units are made here in the design workshop and the overall finish is not representative of a proper production batch. But they are complete and fully functional with all the stuff that matters (as is your workshop I bet!).



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