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Question #: 627

Question: DO NEED LIMIT SWITCHES, IF SO WHAT IS YOUR RECOMMENDATION?

Current Solution

Limit switches are not really needed for this level of a machine, but if you do want to use them, then you will need to connect them with shielded cable and ground the shield at both ends and any other non-used wire in the cable. Limit switches are very susceptible to the motor interference. You will also need to adjust the debounce in the software you will use.

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Other Possible Solutions to this Question

  • What would be your recommendation for "power supply 2 (24vdc)" connecting to USB motion card?

    A 24V connection to the USB motion card is only needed if you are using limit switches (inputs), powering the spindle/VFD speed and direction, and for the outputs, for powering other devices (mist, coolant, etc.).

    If you are using a VFD (Variable Frequency Drive, also called Inverter) for a spindle, they typically have a 24V out terminal that can be used with our USB motion card. If you are not using a spindle/VFD (we highly recommend one), then you will need to purchase a 24v power supply to power that side of the board.

    The outputs mentioned above are to connect to external devices and will require a relay (a mechanical switch that is controlled by a digital signal). This mechanical switch can turn on a device like coolant and mist, or even a router, if you are using one. A relay is required to turn on these devices because the devices are typically higher voltage, like mains (110v or 220v). So, a relay can turn on or off a high voltage device with a lower voltage (24v) signal.

    Click the link to respond:
    What would be your recommendation for "power supply 2 (24vdc)" connecting to USB motion card?

  • Do you have a wiring diagram for a 3 axis system using your compotents. It would be nice if it showed the estop, limit switches,relays...

    Depending on the Breakout board that was purchased with your electronics combo, either USB or Parallel:
    USB: https://buildyourcnc.com/item/electronicsAndMotors-electronic-component-USB-Controller-Breakout#prettyPhoto/2/
    Parallel: https://buildyourcnc.com/item/electronicsAndMotors-parallel-breakout-relay#prettyPhoto/2/

    These will have the inputs labeled on the board itself, for example:
    USB will have the inputs for all the axis from X, Y, Z, A, limit switches.
    Parallel there will be 4 inputs 10, 11, 12, 13, 16(relay). Which can be used as E-stop, Limits (for all axes if wired in a closed loop), and one relay for a spindle control on/off via mach 3 or mach 4 or a specific relay control that you desire.

    Click the link to respond:
    Do you have a wiring diagram for a 3 axis system using your compotents. It would be nice if it showed the estop, limit switches,relays...

  • After limit switch is activated on planet cnc control software, what do I need to do to get axis to move again?

    Looking for a solution myself. Proper operation would be for the limit switch to only disable further travel in the effected direction while still allowing travel in the opposite direction.

    As for now, I am just using the jog arrows within the software or the VGA controller.

    Click the link to respond:
    After limit switch is activated on planet cnc control software, what do I need to do to get axis to move again?

  • What would be your recommendation for "power supply 2 (24vdc)" connecting to USB motion card? Are there any videos explaining it's connection to the relay coil? (not quite sure what relay coil is)

    A 24V connection to the USB motion card is only needed if you are using limit switches (inputs), powering the spindle/VFD speed and direction, and for the outputs, for powering other devices (mist, coolant, etc.).

    If you are using a VFD (Variable Frequency Drive, also called Inverter) for a spindle, they typically have a 24V out terminal that can be used with our USB motion card. If you are not using a spindle/VFD (we highly recommend one), then you will need to purchase a 24v power supply to power that side of the board.

    The outputs mentioned above are to connect to external devices and will require a relay (a mechanical switch that is controlled by a digital signal). This mechanical switch can turn on a device like coolant and mist, or even a router, if you are using one. A relay is required to turn on these devices because the devices are typically higher voltage, like mains (110v or 220v). So, a relay can turn on or off a high voltage device with a lower voltage (24v) signal.

    Click the link to respond:
    What would be your recommendation for "power supply 2 (24vdc)" connecting to USB motion card? Are there any videos explaining it's connection to the relay coil? (not quite sure what relay coil is)

  • So I had my electrician hook it up as per your recommendations and nothing happens. Nothing lights up on the screen and nothing turns on. I have verified that the vfd that I was supplied is for single phase power and I have single phase power at my shop. It is a 220v vfd and I am supplying it with 220v. What do I do now? Is this vfd a bad one and do I need a new one?

    Was this VFD purchased from buildyourcnc.com and if so, what is the model number. If not, please provide the model number and we will attempt to determine the issue.

    Also, is this question related to a previous question you asked earlier? If so, please respond to that question with this new information.

    Many thanks.

    Additional Information:
    Yes it was purchased through your website, here is the number is YL600-2S-2K20

    Additional Information:
    Ok great. I will look into it.

    Is this related to the R S T and L1 L2 question that was recently asked?

    Additional Information:
    No

    Additional Information:
    It started with that but then once it was wired up it changed to this.

    Additional Information:
    Ok. Thanks. Please explain how you have the VFD wired to the 220v outlet.

    Additional Information:
    I have traced the black wire clear from the panel to the R terminal and the white wire to the T terminal and the ground to the E terminal. I have even used a multimeter on the terminals in the VFD while the wires are connected and the power is on, and I get 240V across the R and T terminals and 120 from R to Ground and from T to Ground.

    Additional Information:
    I still have not seen a response to my previous additional information. It has now been 5 days since then and I still have a non-functioning VFD, what should I do?

    Additional Information:
    My apologies. I didn’t see your latest wiring clarification response. Please connect the white (neutral) wire to the “S” terminal.

    Additional Information:
    So, i wired it up and now it does in fact power up. However, now it just gives me an ERR 02 code. What does that mean? the only manual that came with the VFD is all in Chinese. Do you have a book in english? Or a list of error codes?

    Additional Information:
    I have not seen a response to my previous comment. It has been a while since i have heard from you. What do i do next?

    Additional Information:
    Sorry about that. The Er 02 code in my manual says that there is an over-current at constant speed, over-current at deceleration or over-crrent at stop.
    The recommended actions in the manual says:
    1. Check whether the motor has got short circuit and whether the insulation of the output wires is good.
    2. Check whether the motor is blocked and whether there is a sudden change of mechanical load.
    3. Check whether there is a sudden change in he power supply voltage.
    4. Check whether the insulation of the output wires is good and whether the motor has got a short circuit.
    5. Extend the ramp down time.
    6. Replace it with an inverter (VFD) of larger capacity
    7. DE braking is too high. Decrease DC braking (this is only if you have a braking resistor connected).
    8. The inverter has failure. Please send it to the factory to repair.

    What I have done in the office is to check the resistance between the motor coils. The motor coils should have the same amount of wire winding on each coil. If there is a short circuit in this coil, the the resistance should be lower since there is less wire to travel. You can use a multimeter to check between pin 1 and 2, 1 and 3 and 2 and 3. The resistance should be generally the same.

    Additional Information:
    I worked threw all the other problems. the controller is now displaying Err 10. WHat does that mean.

    Can you provide a complete list of error codes. Or documentation to support this device you sold to me.

    id like to be able to integrate this thing into my growing business. i have been pretty unhappy so far with the lack of support. If you have any documentation, can you please send it to me. i cant be the only one having issues. Or even asking for help with these VFDs.

    Click the link to respond:
    So I had my electrician hook it up as per your recommendations and nothing happens. Nothing lights up on the screen and nothing turns on. I have verified that the vfd that I was supplied is for single phase power and I have single phase power at my shop. It is a 220v vfd and I am supplying it with 220v. What do I do now? Is this vfd a bad one and do I need a new one?

  • Can you tell me what gauge wire is needed for limits switches and the spindle?

    The hookup wires you will need is 22 to 24 AWG stranded and shielded for the wiring of the limit switches and E_Stop. Our kit customers select various places for these switches, so we don't supply the wiring. If you don't use shielded cable, you will need to change the debounce setting in Mach3 (if that is the control program you are using).

    We typically use 14 AWG stranded wire for the VFD to Spindle (U, V, W) connections.

    Click the link to respond:
    Can you tell me what gauge wire is needed for limits switches and the spindle?

  • I purchased Mach3 from buildyourcnc dont know what verson i need to use in VCarve as the processor. There are 8 2/3Mach listed

    You will probably have post processors like the following listed:
    Mach2/3 ATC Arcs (inch)
    Mach2/3 ATC Arcs (mm)
    Mach2/3 Arcs (inch)
    Mach2/3 Arcs (mm)
    Mach2/3-WrapX2A ATC Arcs (inch)
    Mach2/3-WrapX2A ATC Arcs (mm)
    Mach2/3-WrapY2A ATC Arcs (inch)
    Mach2/3-WrapY2A ATC Arcs (mm)

    If you have an Automatic Tool Changer, use the post processor with the ATC in the name. For most applications and if you don't have an ATC (automatic tool changer), use the Mach2/3 Arcs (inch) or (mm) post processor.

    Click the link to respond:
    I purchased Mach3 from buildyourcnc dont know what verson i need to use in VCarve as the processor. There are 8 2/3Mach listed

  • I'm new to CNC and just finish building my router.I need software for my post processor and not sure if your product is what I need?

    You will need a CNC software that will control your router cnc machine, and your design CAD/CAM software will need to know the CNC software you plan on using so the post processor in the CAM software can create the g-code for the CNC control software. So if you have for example, Mach 3 and our parallel breakout board, you can use the Mach 3 post processor in your design software.

    Click the link to respond:
    I'm new to CNC and just finish building my router.I need software for my post processor and not sure if your product is what I need?

  • ARE THERE RECOMMENDATIONS FOR THE PREVENTION OF INSTITUTIONAL OUTBREAKS INFLUENZA?

    The most important factor in preventing outbreaks is annual vaccination of all occupants of the facility, and all persons in the facility who share the same air as the high-risk occupants. Groups that should be targeted include physicians, nurses, and other personnel in hospitals and outpatient settings who have contact with high-risk patients in all age groups, and providers of home care to high-risk persons (e.g., visiting nurses, volunteers).

    Click the link to respond:
    ARE THERE RECOMMENDATIONS FOR THE PREVENTION OF INSTITUTIONAL OUTBREAKS INFLUENZA?

  • Do you ship to Pakistan???If so what are the charges if any???

    You can determine if the country is serviceable by:
    - selecting the items you want to purchase on the website
    - go to the cart (shopping cart top left of any webpage)
    - log in, or register
    - Enter the address and click on calculate shipping.

    The webpage will return the direct rates and whether your area is serviced or not. Feel free to enter any address as long as you are able to receive the package from that address.

    The shipping times are determined by the service you select in the shopping cart. If a machine is purchased, we generally have a one week lead time unless otherwise stated in the description of the machine's product page.

    Click the link to respond:
    Do you ship to Pakistan???If so what are the charges if any???

  • What breakout board do i need for the mach4 software?

    You can find the cnc machine interface board here that works with Mach4:
    https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach4-mach3-USB-ethernet-Board

    This board will work with Mach3 and Mach4. The board is filled with a wealth of options and features, including the ability to connect up to 8 axes (motor drivers), pendant, LCD, many outputs and inputs, separate pins for limit switches , 2 relays, Ethernet and USB interfacing.

    Additional Information:

    Click the link to respond:
    What breakout board do i need for the mach4 software?

  • What breakout board do i need for the mach4 software?

    You can find the cnc machine interface board here that works with Mach4:
    https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach4-mach3-USB-ethernet-Board

    This board will work with Mach3 and Mach4. The board is filled with a wealth of options and features, including the ability to connect up to 8 axes (motor drivers), pendant, LCD, many outputs and inputs, separate pins for limit switches , 2 relays, Ethernet and USB interfacing.

    Additional Information:

    Click the link to respond:
    What breakout board do i need for the mach4 software?

  • What software is needed to run the laser controller from the PC?

    The laser controller uses software called LaserCAD. You can find the link to the LaserCAD software on the Laser Controller product page:

    https://www.buildyourcnc.com/item/Laser-Component-Laser-Control-System

    Click the link to respond:
    What software is needed to run the laser controller from the PC?

  • I am looking at using a laser on my 6X6 3 axis table what do i need?

    To add CO2 laser functionality to your existing CNC machine, you will need everything listed on this page: https://www.buildyourcnc.com/LaserComponents.aspx

    The number of mirrors and mirror mounts will depend where and at what orientation the laser tube will be mounted in the machine. There is already a mirror mount in the head/nozzle unit, so keep that in mind.

    Click the link to respond:
    I am looking at using a laser on my 6X6 3 axis table what do i need?

  • What doesn't come with the electronics that I will need so it will work?

    Here is a list of the parts needed to get the electronics combo functioning (parallel or USB interface options):

    - 22 or 24 gauge stranded hookup wire to connect all of the drivers to the USB or parallel interface (terminal to terminal connections),
    - 18 gauge stranded hookup wire to connect the drivers to the power supply,
    - a power cable (extension cord) to connect from the power outlet to the power supply,
    - 4 conductor cable to connect the drivers to the stepper motors,
    - a USB cable to connect from the computer to the USB interface (or for power to the parallel interface),
    - for the parallel interface, a parallel cable is needed (male to male db-25),
    - a computer (for parallel interface, the computer will need a parallel port and if the computer does not contain a parallel interface, the motherboard may have a header for it, or you can purchase a parallel adapter to plug into the motherboard, very inexpensive),
    - cnc control software: for the USB interface, you will need planet-cnc software, for the parallel interface, you can use any industry standard cnc control software (the typical is Mach3 for Windows, or EMC2 or Linuxcnc for Linux (Linuxcnc.org).

    5v power supply is not needed. The 5 volts signal level power is derived from the computer through USB on both types of interfaces.

    Click the link to respond:
    What doesn't come with the electronics that I will need so it will work?

  • I bought your 3 axis combo and need to know what name brand is the motors and their ounces and the drivers

    Surely you know the brand motors you sold me?

    Click the link to respond:
    I bought your 3 axis combo and need to know what name brand is the motors and their ounces and the drivers

  • hello, my question is, I recieved two breakoutboards exactly the same, do I need them both for my greenbull 4x8 also, I cant find any tutorial showing the installatio and placement of the limit switches, can I have some assistance please? sorry fot he bad english and thanks.

    No, you should not have received two parallel breakout boards in your CNC kit. You can return the extra item using standard shipping with COD. Our apologies for the confusion and the inconvenience.

    I will answer the other question as another FAQ. Please check the Customer Service page to see the answer to that question.

    If you have difficulty finding the answer, here is a link:
    https://www.buildyourcnc.com/FAQ/13636

    Click the link to respond:
    hello, my question is, I recieved two breakoutboards exactly the same, do I need them both for my greenbull 4x8 also, I cant find any tutorial showing the installatio and placement of the limit switches, can I have some assistance please? sorry fot he bad english and thanks.

  • Do you offer a touch plate kit? If not can a touch plate kit be added to your machines if so whats the process?

    Yes, you can add a touch plate kit. A touch plate works just like a limit switch. All you need are alligator clips and a conductive plate. Solder a wire to the conductive plate material and connect that to an IN (input) terminal. Connect the alligator clip to the gnd of the input and then to the end mill. Enable the home setting for the Z axis in Mach3 or Mach4 and use the "ref all home" button to home all of the axes. The z axis will home at the touch plate. Make sure that the touch plate is under the end mill when the z-axis is in the homing process.

    Here is a tutorial I made a while ago that explains this:
    https://buildyourcnc.com/PrimeronHomingandLimitSwitches.aspx

    Let me know what you think by click on the "submit response".

    Thanks

    Click the link to respond:
    Do you offer a touch plate kit? If not can a touch plate kit be added to your machines if so whats the process?

  • If I use a Porter Cable 3-3/4 router motor what size stepper motors do I need?

    You can use the standard electronics combo: http://www.buildyourcnc.com/item/electronicsAndMotors-3axis-425-elcombo. The size of the stepping motors are generally sized with the overall machine structural weight, inertia of parts, the type of mechanical parts used to move the axes, and actually, less by the router which is more connect to how the machine is controlled.

    Click the link to respond:
    If I use a Porter Cable 3-3/4 router motor what size stepper motors do I need?

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