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Type: Posts; User: doanwannapickle

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    Re: Step/Dir Spindle runs SLOW

    Update:

    Last night I disconnected the new hybrid motor, dug out an old G201 and an even older Pacific Scientific stepper and hooked that up. Same slow result.

    This morning I changed those...
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    Step/Dir Spindle runs SLOW

    I'm trying to set up hybrid motor for my spindle on a small lathe. I think I have the wiring correct. M3 and M4 turn the motor forward and reverse.

    At present, the motor is not actually driving...
  3. Importing DXF file with multiple layers.

    I've just started trying to learn SW. I've been importing dxf files and converting them to solid. If the dxf is just a single layer, all is great.
    If the dxf consists of multiple layers, I find...
  4. Re: I want to learn all about macros. Where to start?

    It turns out that Mach does do a call for G85. There just isn't a macro there for it.
    I copied M1083.m1s and renamed it M1085.m1s. I couldn't figure out how to get rid of the required Q-word so I...
  5. Re: I want to learn all about macros. Where to start?

    That's too bad. I was thinking it would be quite simple to edit G83 into G85.
  6. Re: I want to learn all about macros. Where to start?

    How does Mach3 call a macro from within a g-code program?
    For instance, when you code G83, the macro M1083.m1s is what actually runs.
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    Re: Need help wiring brushless controller

    Just love it when a solution turns out to be trivial. The PWM base frequency had somehow gotten changed back to 5 Hz rather than the 50 Hz that the Gecko likes.
    Everything is smooth and stable now. ...
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    Re: Need help wiring brushless controller

    Well, I connected things up to the G540 yesterday. It was not the drama-free event I was anticipating. The voltage fluctuated wildly around 1/2 volt.
    Disconnected it and checked it at the Gecko. ...
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    Re: Need help wiring brushless controller

    Merry Christmas.

    The closest resistor value I had for R1 was 3.3k and the closest for R4 was 510R. Then there's the breadboard I couldn't have paid more than a dollar for and the fact that it's...
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    Re: Need help wiring brushless controller

    Work has been relentless lately but I finally got a bit of time to get back to this project.

    https://i.imgur.com/5MB87vJ.jpg

    It's a bit crude at the moment (understatement) but the results were...
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    Re: Need help wiring brushless controller

    One is described as "Voltage References 2.5-36V Programmable Adjustable" and the other as "Voltage References Adjustable Shunt ".
    I have no idea what either description means.
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    Re: Need help wiring brushless controller

    I got the order in with Mouser. Eight bucks shipping for five bucks worth of components.
    And then I forgot the pots. Sigh.
    I ordered some from eBay:...
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    Re: Need help wiring brushless controller

    Like so:


    https://i.imgur.com/LI1IjgP.png


    https://i.imgur.com/9Nx2wyn.png

    BTW, I told my wife you were penning this circuit I've been stuck on. She was duly impressed. Kudos.
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    Re: Need help wiring brushless controller

    Try number 2. I think maybe I've got it this time.

    https://i.imgur.com/PjdBgyT.png

    https://i.imgur.com/YD7inpj.png
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    Re: Need help wiring brushless controller

    Makes sense that the output voltage comes from pin 7 but now I'm a bit foggy on V1 and V2.
    If V1 is the 10V power supply, is V2 the 0-10V input from the G540, the one Gecko labels VFD Out?
    I'll...
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    Re: Need help wiring brushless controller

    I suspected the 2.5V was probably tunable but I wasn't sure which resistor(s) would do the trick. What value pots would be appropriate?
    What is .tran 10?
    I did a quick sketch. Could you give it a...
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    Re: Need help wiring brushless controller

    Excellent. I can see I'm going to have a few questions.
    I'll start with the easiest for me. Could R1-R2 be replaced with a pot to make that tunable?
    I'll get the components on order and try to...
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    Re: Need help wiring brushless controller

    Cool, thanks.
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    Re: Need help wiring brushless controller

    Sounds interesting. Where do I get this editor?


    Even more interesting but beyond my electrical skills. If you want to sketch something up, I'll be happy to put it together. :)
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    Re: Need help wiring brushless controller

    Good Morning Citizen,
    Let me back up and clarify where I'm at on this. Humor me.

    The original controller that came with the motor does a good job driving the motor. It spins it to 4500 rpm with...
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    Re: Need help wiring brushless controller

    That's mostly a bit beyond my electronics capability. Do you have that schematic in a little more readable format? PDF? DOC? DXF?
    I wouldn't mind studying on it a bit and try to figure it out.
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    Re: Need help wiring brushless controller

    Of which I have neither.
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    Re: Need help wiring brushless controller

    I'm connecting to the VFD +10v/VFD Gnd/VFD Output on the G540. I was under the impression that that voltage varied in response to the Mach3 pwm signal.
    As far as the controller is concerned, the...
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    Re: Need help wiring brushless controller

    The controller I bought took 0-10v pwm input. That's why I bought it and wanted to make it work. Plugs right in to my G540. It's just not compatible with this motor.
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    Re: Need help wiring brushless controller

    That, I believe, is exactly the best solution. Unfortunately, I have no clue how to make that happen.
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    Re: Need help wiring brushless controller

    [QUOTE=CitizenOfDreams;2238642]The "400W BLDC spindle" from eBay. Works pretty good on a small CNC machine.

    Those are really nice for high speed stuff. My motor maxes out at 4500 and has a ton of...
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    Re: Need help wiring brushless controller

    On the contrary, the motor is excellent. Lots of torque, rpm range right where I want it and light and compact.
    It's the controller. It's optimized for a sewing machine. Original control was from...
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    Re: Need help wiring brushless controller

    Well, that turned out to be an exercise in futility.
    The LM7805 worked perfectly and gave me a nice clean 5 volts but the performance increase out of the motor was barely noticeable.
    It appears...
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    Re: Need help wiring brushless controller

    Excellent!
    Quick, easy, safe.
    I'll let you know how it works out.
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    Re: Need help wiring brushless controller

    It's 5v but the sensors still might be able to handle 10v. And the sensors in the motor are really hard to get to.
    Sigh.
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