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Question #: 334

Question: CAN THERE BE CLOSED LOOP CONTROL WITH STEPPING MOTORS?

Current Solution

I haven't delved into using encoders with stepping motors too much. From my research, you need to have a controller that can provide the closed loop control, rather than software handling that process. I have also found from my research that using encoders on stepping motors is generally used to stop the machine in the case that the motor failed to achieve the commanded position for some reason and gives the user the chance to correct and continue with the job.

If you want proper closed loop control, it may be best to go with servos and servo controller that provide the closed loop control within the real of those two components.

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Other Possible Solutions to this Question

  • I HAVE NOT SEEN ANY REFERENCES TO STEPPING MOTOR ENCODER FEED-BACK FOR CLOSED LOOP CAPABILITY IN OF THE HARDWARE YOU SELL. THIS A SUPPORTED FEATURE WITH HARDWARE/SOFTWARE SELL?

    I haven't delved into using encoders with stepping motors too much. From my research, you need to have a controller that can provide the closed loop control, rather than software handling that process. I have also found from my research that using encoders on stepping motors is generally used to stop the machine in the case that the motor failed to achieve the commanded position for some reason and gives the user the chance to correct and continue with the job.

    If you want proper closed loop control, it may be best to go with servos and servo controller that provide the closed loop control within the real of those two components.

    Click the link to add information to this solution:
    I HAVE NOT SEEN ANY REFERENCES TO STEPPING MOTOR ENCODER FEED-BACK FOR CLOSED LOOP CAPABILITY IN OF THE HARDWARE YOU SELL. THIS A SUPPORTED FEATURE WITH HARDWARE/SOFTWARE SELL?

  • CAN I USE A STEPPING MOTOR WITH AN ENCODER?

    I haven't delved into using encoders with stepping motors too much. From my research, you need to have a controller that can provide the closed loop control, rather than software handling that process. I have also found from my research that using encoders on stepping motors is generally used to stop the machine in the case that the motor failed to achieve the commanded position for some reason and gives the user the chance to correct and continue with the job.

    If you want proper closed loop control, it may be best to go with servos and servo controller that provide the closed loop control within the real of those two components.

    Click the link to add information to this solution:
    CAN I USE A STEPPING MOTOR WITH AN ENCODER?

  • DO YOU SUPPLY THE MALE PORTION OF MOTOR CONTROL CABLES WITH REDLEAF?

    Yes and properly soldered.

    Additional Information:
    20

    Click the link to add information to this solution:
    DO YOU SUPPLY THE MALE PORTION OF MOTOR CONTROL CABLES WITH REDLEAF?

  • CAN I USE A MAC TO CONTROL THE CNC?

    There are several CAD/CAM programs out there for MacOS. Here is a list of a few: http://www.macuser.de/forum/f53/3d-2d-cad-395058/#post4499316
    I've also read good things about punchCAD: http://www.punchcad.com/
    Of course, there is always SketchUp if you are in a pinch. There are a few CAM plugins for SketchUp as well, but I've never used them, so I can't vouch for them.

    CAD/CAM will get you as far as designing your parts and producing the g-code, but if you also want to run the CNC machine with your Mac, you will need a piece of software similar to Mach3 or EMC to run the g-code. I haven't been able to find anything like these programs that runs on Mac, so you may have to run Mach3 or EMC in Windows using Boot Camp or a virtual machine such as VMware or Parallels.

    Personally, I would use the Mac to do all the CAD/CAM, then use a cheap PC to run the CNC machine.

    Additional Information:


    Additional Information:
    EasyDNC for OSX
    www.dnc-x.com

    Additional Information:


    Additional Information:
    Hi guys I’m new to the cnc and I’m beginning to learn how to operate and cad-cam software also my cnc runs on Mach3 my questions is if I should use MacBook to do all designs if I can have all this software to run on Mac or I have to use windows software to operate it? I have separate small computer connected to the cnc table who have Mach3 on it please help. Also if you know any other software much easy for beginners please let me know thank you guys!
    My email if needed is r1jastrzebski@gmail.com

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    CAN I USE A MAC TO CONTROL THE CNC?

  • HOW MANY AXES CAN MACH 3 CONTROL?

    Mach 3 CNC software can do the following:

    Converts a standard PC to a fully featured, 6-axis CNC controller
    Allows direct import of DXF, BMP, JPG, and HPGL files through LazyCam
    Visual Gcode display
    Generates Gcode via LazyCam or Wizards
    Fully customizable interface
    Customizable M-Codes and Macros using VBscript

    SET:

    Spindle Speed control
    Multiple relay control
    Manual pulse generation
    Video display of machine
    Touch screen ability
    Full screen eligibility

    EQUIPMENT:

    Lathes
    Mills
    Routers
    Lasers
    Plasma
    Engravers
    Gear cutting

    Additional Information:
    how to wire relay with mach board. I have mach interface board with one relay

    Click the link to add information to this solution:
    HOW MANY AXES CAN MACH 3 CONTROL?

  • WHAT SOFTWARE CAN BE USED WITH THE BLACKTOOTH LASER CUTTER?

    If you take the standard parallel cable BoB (Break Out Board), then you will need control software (Mach 3 or EMC2) and CAM software to make your G-Code (such as CamBam). Personally I use CamBam and Mach 3, they work beautifully but don't expect to turn them on and know how they work out of the box. Give yourself a few weeks to get familiar with the basics. CamBam is VERY powerful software for it's price. I'm surprised how much I keep learning on what I can do with it...I highly recommend it if you want as much control as possible.

    Mach 3 + CamBam as a bundle costs $310. EMC2 will give you a free replacement for Mach 3 and is exclusively for Linux.

    If you use the USB BoB, it will cost an extra $75 + $75 for the software. This is an all-in-one package so no need for Mach 3 or CamBam.

    For etching rasters (jpeg, bmp, tiff, non-vectors, photos), I highly recommend PicEngrave. It has been a labor of love for the past 9 years and John has done a wonderful job with it. It easily compares in quality compared to software that is in the $200-$300 range. John's software runs $40 and can be found here: http://picengrave.com/ (don't let the modest website fool you, this stuff can do amazing things). DotG and the Mach3 engrave plugin are two other options and instructions can be found on Dustans page in the gallery on buildyourcnc.com website.

    Click the link to add information to this solution:
    WHAT SOFTWARE CAN BE USED WITH THE BLACKTOOTH LASER CUTTER?

  • HOW COMPLEX IS YOUR KIT TO ASSEMBLE, AND MOST IMPORTANTLY - HARD IT SETUP CONTROL THE LASER WITH MACH3?

    The blackTooth Laser cutter and Engraver can be built in a weekend. Take a look at the build instructions and try to determine if you feel you have sufficient capability to put together the laser system.

    Click the link to add information to this solution:
    HOW COMPLEX IS YOUR KIT TO ASSEMBLE, AND MOST IMPORTANTLY - HARD IT SETUP CONTROL THE LASER WITH MACH3?

  • IS THE MACH3 SOFTWARE COMPATIBLE WITH 3 AXIS MOTION CONTROL COMBO KITS? PLANET CNC MENTIONED AS BEING COMPATIBLE.

    Mach 3 is compatible with our electronic combo's that include the Parallel Breakout Board.
    Planet-CNC is compatible with our electronic combo's that included our USB Breakout Board.

    The parallel breakout board is compatible to a wide variety of software control packages. The USB interface board that we sell can only be used with the Planet-cnc control software.

    If you are concerned with your computer (desktop) not having a parallel port, one can be purchased and inserted into a PCI slot on the motherboard. Some motherboard also come with a parallel port header (connector) on the motherboard and a simple cable can be connected to this connector to get that functionality on the computer. The former solution of getting a parallel port adapter card to plug into the motherboard is probable the easiest and least expensive option.

    Additional Information:

    Click the link to add information to this solution:
    IS THE MACH3 SOFTWARE COMPATIBLE WITH 3 AXIS MOTION CONTROL COMBO KITS? PLANET CNC MENTIONED AS BEING COMPATIBLE.

  • ARE THERE STILL VIDEOS THAT CAN WATCH AS PUT THIS TOGETHER, I'LL BUY THEM IF HAVE TO, VERY FUSTURATED WITH ELECTROCTICS AND WIRING PART.
  • WHAT IS THE SYSTEM PASSWORD FOR LASER CONTROL UNIT?

    The password is: 608

    Click the link to add information to this solution:
    WHAT IS THE SYSTEM PASSWORD FOR LASER CONTROL UNIT?

  • HOW TO CONTROL MY 2.2 KW SPINDLE VIA MACH3

    You can go to our instructions on for the breakout board here: http://www.buildyourcnc.com/item/electronicsAndMotors-parallel-breakout-relay to get the information on turning the spindle on and off from the computer and mach3. Alternatively, you can connect the computer using RS485 serial to the inverter and send control commands that way.

    Additional Information:
    HOW TO CONTROL MY 2.2 KW SPINDLE VIA MACH3 usb

    Additional Information:


    Additional Information:


    Additional Information:
    How should I wire the Mach3 card (red, 4 axis) and the vfd (Yl620-a)?

    Click the link to add information to this solution:
    HOW TO CONTROL MY 2.2 KW SPINDLE VIA MACH3

  • I WOULD LIKE TO KNOW IF THERE IS A STORE OR SHOP WHERE CAN SEE THE PRODUCT AND BUY IT?

    If you are located near Houston, Texas area you can stop by our shop. If you are not near us, you can check in our forums, and see if you can find someone in your area that has one of our machines, and would be willing to let you come see it in action.

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    I WOULD LIKE TO KNOW IF THERE IS A STORE OR SHOP WHERE CAN SEE THE PRODUCT AND BUY IT?

  • DO I HAVE TO REGISTER WITH YOUR OFFICE BE PROTECTED?

    No. In general, registration is voluntary. Copyright exists from the moment the work is created. You will have to register, however, if you wish to bring a lawsuit for infringement of a U.S. work.

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    DO I HAVE TO REGISTER WITH YOUR OFFICE BE PROTECTED?

  • HOW LATE IN THE SEASON CAN I VACCINATE MY PATIENTS WITH INFLUENZA VACCINE?

    Peak influenza activity does not generally occur until February. Providers are encouraged to continue vaccinating patients throughout the influenza season, including into the spring months (e.g., through May), as long as they have vaccine in the refrigerator and unvaccinated patients in their office.

    Because influenza occurs in many areas of the world during April through September, vaccine should be given to travelers who missed vaccination in the preceding fall and winter. Another late season use of vaccine is for children younger than age 9 years who were vaccinated for the first time in the current vaccination season but failed to get their second dose. For each of these situations, vaccine can be given through the month of June since injectable influenza vaccine customarily has a June 30 expiration date.

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    HOW LATE IN THE SEASON CAN I VACCINATE MY PATIENTS WITH INFLUENZA VACCINE?

  • THE DUST SHOE HAS STIFF BRISTLES, IS THERE PROBLEM WITH MOVING Z-AXIS DOWN SINCE BRISTLES PUSH AXIS SIDEWAYS

    A couple things to consider, the machine is most likely moving sideways, so the bristles won't be a problem. The lead screw has a very hight mechanical advantage and the bristles don't pose an issue with this. We have not found that the bristles cause any appreciable deflection to the work we do in our shop; however, you can change the brush for a more pliable plastic, or reduce the number of bristles by selectively pruning.

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    THE DUST SHOE HAS STIFF BRISTLES, IS THERE PROBLEM WITH MOVING Z-AXIS DOWN SINCE BRISTLES PUSH AXIS SIDEWAYS

  • DON'T WANT TO USE MY OWN MOTORS FOR THE REDLEAF CNC COMPUTER SYSTEM.

    That shouldn't be a problem. I will need the current rating for the motors. We can subtract the price of the motors. and you can add you own. If you want us to solder the cable to the round connectors and them motor, you would need to send the motors to us.

    Let me know and I can send a paypal invoice for the redLeaf without motors.

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    DON'T WANT TO USE MY OWN MOTORS FOR THE REDLEAF CNC COMPUTER SYSTEM.

  • DO WE CAN BUILD OUR CNC MACHINE WITH TOW TORCHES (PLASMA TORCH & OXY ACETYLENE TORCH)?

    As you know, the plasma nozzle must be close to the cutting area and you will need some way to keep the nozzle at the right level with some type of device. The spray is downward, so you will need a contained area with a sheet of water at the bottom to extinguish he spray. You should have no problem using our machines for this application since you would need to product the table bed.

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    DO WE CAN BUILD OUR CNC MACHINE WITH TOW TORCHES (PLASMA TORCH & OXY ACETYLENE TORCH)?

  • MY MOTORS GET REALLY HOT TO THE TOUCH.

    If your motors are hot to the touch, this is normal. Current is being drawn by the motor coils as the motor moves and as the motor stays at a position. If the motor is not using the current in the coils to move (holding it's position), the energy will be translated as heat (rather than motion, sound or light). Even while moving, some of the energy will be lost as heat. Remember that energy cannot be created nor destroyed.

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    MY MOTORS GET REALLY HOT TO THE TOUCH.

  • MACH3 CONTROL SPINDLE

    It is not necessary to connect the spindle VFD (Variable Frequency Drive also called an Inverter) to the computer or CNC motion electronics. The VFD can be controlled independently using the control panel on the VFD. The control panel has the ability to control all aspects of the spindle including Speed, Torque, limits, etc. However, you can connect the VFD to the computer so the CNC control program can control the spindle during the CNC Machine operation. You will need to connect the VFD to the computer via a serial conection (in this case, it is the RS-485 protocol).

    The following are instructions on how to connect the VFD to Mach3 via this RS-485 serial connection.

    The first thing you will need is the dynamic link library to pair with mach3 called the Huanyang VFD Mach3 PlugIn. You can find this file at the mach3 support forum here: http://www.machsupport.com/forum/index.php/topic,14182.0.html

    You will also need to download the Microsoft .net 3.5 framework and install it: https://www.microsoft.com/en-us/download/details.aspx?id=21

    Follow the pdf that comes with the library file, but here is a synopsis of what you need to do (I also added a lot more information that may be useful during this process as the manual does not cover the main connections that need to be done):

    You will need to program your VFD so that it knows how to communicate with mach3 and the computer (go into the programming mode of the VFD and change these parameters):
    - PD001 - value 2 - Enables with communication aspect of the VFD
    - PD002 - value 2 - Enables frequency control from the communcations port
    - PD163 - value 1 - VFD address
    - PD164 - value 1 - Baud rate of 9600 (speed of the communication)
    - PD165 - value 3 - 8N1 RTU - 8 bits (that's the size of the word that gets communicated), N (No parity or no error checking) and 1 (1 stop bit)

    Copy the dll file to the PlugIns folder of mach3.

    Connect the RX and TX lines to your computer. There are a couple ways you can do this, but the recommended way would be to use an FTDI USB device which converts a USB to a serial com port. The device will have Rx and Tx connectors to connect to the VFD terminals with the same labels. This method is recommended since serial ports are not as common in computers these days.

    Next, you will need to configure mach3 to use the plugin library. Start mach3 and click on Menu -> config ->Config Plugins. Enable the new plugin by clicking on the red cross on the left column next to the plug in. Restart mach3 after doing this.

    No you need to configure mach3 to use the HuanyangVFD plugin. Go to the ports & pins configuration and select the spindle setup tab. Make sure that the Disable Spindle Relays checkbox is unchecked. We don't want mach3 to output a signal for a relay since the spindle will start up and turn off within the VFD and not from an external relay.

    Next, go to the HuanyangVFD settings by clicking on Menu -> plugin control -> HuanyangVFD. Set the parameters to the same settings you put into the VFD programming. The com port will be shown as new hardward when you plug in the USB FTDI device. A little bubble will be displayed at the bottom right where it will notify you that a new device is being installed (be patient while windows assigns a com port). Alternatively, you can use the windows device manager to see which port was set for the new USB FTDI device). You may need to restart mach3 several times until you get the correct information displayed in the PD001 and PD002 fields. When the com port is correct and the other parameters, like baud and VFD address is the same as you entered in the programming, then the PD001 and PD002 will show the number 2, otherwise, a 99 will appear which means that communication was not successful.

    You can now control the on/off and RPM of the spindle using the RS485 communication between mach3 and the VFD.

    Additional Information:
    The question was how to connect the spindle to the redfy. I did not receive a VFD.
    I have the redFly system and a 2.2kW Spindle - 110V how do i connect the spindle?

    Additional Information:
    If you received a spindle without a VFD, please contact us asap. Our spindle will not work without a VFD.

    Additional Information:
    Hi, how is this setup in mach4?

    Click the link to add information to this solution:
    MACH3 CONTROL SPINDLE

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