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Type: Posts; User: takeda

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  1. LinuxCNC vs MachineKIT - [Is Machinekit] dead?

    Hello.

    First question, does somebody can briefly explain what's different between LinuxCNC and MachineKIT?

    I understand machinekit's community forked from LinuxCNC a lot time ago and tried to...
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    Re: Huanyang Chinese VFD settings and manual here!

    But why do you want to do this, the pump could be running continously without causing an issue.
  3. Re: Lost position with closed loop stepper motors! Nightmare! Please help!

    Guys, sorry I was busy, I will check asap and answer.
  4. Re: Lost position with closed loop stepper motors! Nightmare! Please help!

    I can't tell, but I don't think it's the first place to look, inside the encoder of a enclosed stepper..... After all , it's working since then, it only happened once, a loose encoder would create a...
  5. Lost position with closed loop stepper motors! Nightmare! Please help!

    In a CNC router I have I use the old MK2/4 with CNC USB Controller software [I don't plan to upgrade it's an old machine]


    This machine has closed loop nema23 steppers, specifically 2HSS57 on...
  6. Re: Feed rate problem when jogging with jogging keyboard.

    UP
  7. Re: Feed rate problem when jogging with jogging keyboard.

    And this video is with speed adjust on and just pressing the move axis button


    https://www.youtube.com/watch?v=HjEwEplQXGo&feature=youtu.be
  8. Feed rate problem when jogging with jogging keyboard.

    I am facing a problem with an older Mk3/4 which I use many years now.

    Recently, I bought the jogging pcb and trying out I found that it does not have constant feed rate.
    Every time I move an...
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    Re: MK 3/9 Board broken.

    My reply was a general response, I wrongly quoted this last part
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    Re: MK 3/9 Board broken.

    If you connect the motor/driver combo to the mk3 with short signal cables does it make any difference ?(e.g. remove the motor from the machine).
  11. Re: Pin out of CTRL connector on MK3 and truth tables

    Thanks for the replies.

    The exact configuration as I probe it is

    434578

    Where 0 is GND and 1 is 5V from some pin on MK3.
  12. Pin out of CTRL connector on MK3 and truth tables

    Hello,

    I have tried to connect some pendant I have on the CTRL connector of a recently purchased MK3.

    I found out that the pins MD1 and MD2 , and also the AX1 and AX2 are not standard in terms...
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    Using the additional MPG encoders on Mk3

    Mk3 seems to support additional encoders for MPG.

    I would to use two dedicated rotary handwheels 100 PPR for X and Y Axis on top of using my typical MPG (same 100PPR, axis select & speed select)....
  14. Re: Wiring HuangYang VFD without grounding! How dangerous is this?

    My spindle Is EARTHed but not through a 4 core cable. The whole machine is connected to ground, so the spindle as well (everything aluminum/steel conductive)!


    The spindle case is grounded but...
  15. Re: Wiring HuangYang VFD without grounding! How dangerous is this?

    Well the tripping was caused by Ground wiring and I don't understand why I need a 4core cable in principal.

    If you could explain the whys it's fine, I am all along.

    But I will explain why I am...
  16. Re: Wiring HuangYang VFD without grounding! How dangerous is this?

    Well I don’t get it.
    What do you mean spindle to vfd. Earth runs through shield or I should have a 4 core cable. And if so where does shield connects to?

    Furthermore, What’s the difference of...
  17. Re: Wiring HuangYang VFD without grounding! How dangerous is this?

    I checked, but there is no coneection inside for the 4th pin.

    Anyway, I did the following today:

    - I connected the EARTH from the power strip to the E of VFD.
    - I disconnected the E of VFD...
  18. Re: Wiring HuangYang VFD without grounding! How dangerous is this?

    Here is the drawing. Much better than pictures, I cannot take photos of everything.

    If I connect the EARTH wire coming from the power strip to the E terminal on the VFD, the moment I turn power...
  19. Re: Wiring HuangYang VFD without grounding! How dangerous is this?

    I will add photos...

    I assume in my current setup that a power strip acts also as the common ground reference.

    One thing could be that the power supply of the PC is low quality (no EMI filter)....
  20. Wiring HuangYang VFD without grounding! How dangerous is this?

    Hello all,

    I have a huge noise problem with Huanyang VFD. I use PlanetCNC-Mk2/4 and the USB connection gets lost when I turn on the power output on the VFD.

    I have tried many many things, star...
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    Re: Huanyang Chinese VFD settings and manual here!

    Thanks

    Any ideas on the parameters of VFD to gain more torque at lower RPM (in the range 12K to 18K)?

    Also, do you remember where you've seen the chart?
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    Re: Huanyang Chinese VFD settings and manual here!

    It's the machine's problem, the table is made of aluminum extrusions and an 5083 aluminum plate which resonates at >20.000 rpm....
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    Re: Huanyang Chinese VFD settings and manual here!

    Hi,

    I am looking for the RPM vs TORQUE/POWER chart of HuangYang 2.2Kw water cooled spindle motor.

    Anobody knows where to find this spec?

    I want to know how much power/torque I am losing if I...
  24. I finally used an RC filter to smooth the pwm...

    I finally used an RC filter to smooth the pwm into DC, just for a check.

    After using a voltmeter I measured the output voltage rated 0V to 3V.

    The DBZ200 I found in the cnc installation has on...
  25. Yes I understand (I think). I have to find an...

    Yes I understand (I think). I have to find an input in the VFD to connect the "/stop line" in order to ensure that spindle will start only if PWM pulses are present from the parport.

    I will...
  26. Thanks a lot. I am already looking at the...

    Thanks a lot.

    I am already looking at the manual for a scaling factor in fuction and configuration but it's a messy manual. .

    rgrds,
    Petros

    PS I cant understand the following though:
    ...
  27. Hello. Is it possible to get the PWM out of...

    Hello.

    Is it possible to get the PWM out of parport, convert it to DC (with RC filter) and them amplify that to 0-10V with an opamp, and then control spindle speed by using the VI and ACM inputs...
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    Encoder for stepper motor driver

    Hello.

    I have some bipolar stepper motor NEMA-23 and I use that driver 2.8A, 40V microstepping.

    Any body knows what type of encoder may I use with that motor and driver?

    Please help.
    ...
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    Help needed to find a part (bearings)

    I need to find that part

    THOMSON PB0-12-0PN(-SS)

    http://petmakris.googlepages.com/thomson.JPG
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    Poll: currently constructing a driver for bipolar...

    currently constructing a driver for bipolar stepper motors (3A) using LMD18245
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