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Question #: 14518

Question: How long are the wires on the proximity switches you over

Current Solution

The NPN proximity switches we stock have 43" (1.09 meters) of cable and the PNP proximity switches we carry have 48" (1.21 meters) of cable.

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Other Possible Solutions to this Question

  • How are limit switches connected to the AWC708 controller?

    If you are using the AWC708 or equivalent laser controller, the limit switches will connect between the EL input terminal and the GND terminal in normally open (NO) connection. Most limit switches can be connected as NO, or normally closed (NC).

    For instance, a limit switch for the X- limit will be connected from the ELX- terminal to the NO connection of the limit switch, then a connection from the GND terminal on the laser controller to the COM connection to the same limit switch.

    Click the link to respond:
    How are limit switches connected to the AWC708 controller?

  • There are no limit switches in my Greenbull 5x10 kit. Are these no longer needed?

    You most definitely should have received limit switches in your package. We will send you the missing limit switches.

    But to directly answer your question; no, limit switches are not needed with CNC machines. You can set up soft limits to make sure the machine does not go out of bounds.

    With that said, if the motors stall for some reason and the computer does not know the actual position of the gantry or the spindle, then the machine may actually go out of bounds and the machine may hit a physical limit. With or without limit switches, the machine will stop.

    Additional Information:
    Please call the office so that we know who you are and we can send the limit switches to the correct person.

    Click the link to respond:
    There are no limit switches in my Greenbull 5x10 kit. Are these no longer needed?

  • How should I connect the limit switches to my laser controller?

    If you are using the AWC708 or equivalent laser controller, the limit switches will connect between the EL input terminal and the GND terminal in normally open (NO) connection. Most limit switches can be connected as NO, or normally closed (NC).

    For instance, a limit switch for the X- limit will be connected from the ELX- terminal to the NO connection of the limit switch, then a connection from the GND terminal on the laser controller to the COM connection to the same limit switch.

    Click the link to respond:
    How should I connect the limit switches to my laser controller?

  • Are there any videos detailing wiring of limit switches and stop button?

    This video may serve helpful on the homing and limit switches:
    https://www.buildyourcnc.com/PrimeronHomingandLimitSwitches.aspx

    I don't go into great detail on the wiring, however. If after you watch that video and you still need a video, please let me know and I will make a video on the wiring of limit switches and the E-stop button.

    Click the link to respond:
    Are there any videos detailing wiring of limit switches and stop button?

  • How do I wire the limit switches on the VLXL? Also, where do I place them? You included 2 rotary and two other limit switches.

    You can actually select many places for the switches, depending on where you think your zero will be. I will take pictures of where we positioned our switches. We set the positions so the zero is at the bottom left corner of the machine.

    Additional Information:
    I will take pictures tomorrow.

    Additional Information:
    Thank you. Just want to finish before the holiday.

    Additional Information:
    Not a problem at all and my apologies for not having that information. I have been meaning to put up a video on the limit switch connection as it is somewhat difficult to explain the process in words and diagrams.

    Additional Information:
    Any update?

    Additional Information:
    I plan on driving to the office later today and take pictures.

    Additional Information:
    Thank you. I've just done almost everything else. Just waiting for the grade 3 grease in the mail. Also, where do you suggest connecting the cable carriers? I ran everything through the top but the carrier is getting kind of full. Because of that, it is pushing the belt out when the gantry moves.

    Additional Information:
    I will take pictures of those connections as well.

    Additional Information:
    Much appreciated.

    Additional Information:
    It’s my pleasure.

    Additional Information:
    I’m almost to the office. I’ve been shuttling my kids around today. Sorry for the wait.

    Additional Information:
    I’m adding the images to the end of the VLXL instructions.

    Additional Information:
    The limit switch connections use the NO (Normally Open) terminals. That means that the switch, when not engaged, is normally open (no connection between the com and the NO terminal). When the switch is engaged, then the connection is closed and the NO and COM terminal become connected, making a circuit.

    Additional Information:
    Did you bend the arm on the x switch? Or can you mount it flush with enough give to trigger? Same on both sides?


    Additional Information:
    It does look like it is bent in the picture. No, you do not need to bend the arm of the rotary switch.

    Additional Information:
    We only have the rotary switch on one side.

    Click the link to respond:
    How do I wire the limit switches on the VLXL? Also, where do I place them? You included 2 rotary and two other limit switches.

  • Were are the mounting locattions of the 6 Limit switches on the Blackfoot 4.3

    Here are the recommended locations for limit switches for our CNC machine kits.

    The x-axis limit switches should be located on a single gantry. This makes the wiring of the limit switches close in proximity and more manageable.
    https://www.buildyourcnc.com/images/IMG_6367-800.JPG

    The y-axis limit switches should be located at each end of the gantry. This keeps the switches stationary and impose minimal movement of the wire for better wire management.

    One end of he gantry:
    https://www.buildyourcnc.com/images/IMG_6361-800.JPG

    Other end of the gantry:
    https://www.buildyourcnc.com/images/IMG_6360-800.JPG

    Click the link to respond:
    Were are the mounting locattions of the 6 Limit switches on the Blackfoot 4.3

  • Where are the limit switch connections made when the switches are in series, and NC??

    One end of the limit switch circuit will be connected to the pin and NC, and the other end will be connected to COM and GND.

    For example: (the "-" is wire.)

    [Breakout board input pin] ---- ([NC on switch] [com on switch]) ---- [NC on switch] [com on switch] ---- [back to GND on the breakout board]

    An explanation of the limit switch connections is located on the brakout board datasheet: https://www.buildyourcnc.com/item/electronicsAndMotors-parallel-breakout-relay (instruction step # 1.

    Click the link to respond:
    Where are the limit switch connections made when the switches are in series, and NC??

  • Do you have a more detailed diagram of the rotary and 15A limit switches on the vlxl?

    Are you trying to determine how to wire the switches or where to place them on the Vertical Laser XL? Let me know and I will provide some pictures or video on how to do this.

    Additional Information:
    Kind of both. Have somewhat of an idea as to how to wire them but you included rotary and other limit switches. Not sure which ones to put where. Never worked with these before.

    Click the link to respond:
    Do you have a more detailed diagram of the rotary and 15A limit switches on the vlxl?

  • how do you hook up the 100 oz-in motor wires to the driver?

    Black - A+, Green A-, Red B+, Blue B-

    Click the link to respond:
    how do you hook up the 100 oz-in motor wires to the driver?

  • How do you install the software for the Mach3 USB controller?

    The Mach3 usb controller/interface has instructions and videos on this page:
    https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach3-USB-Board

    There is a 5 step process on that page to install the plug-in and the configuration xml file that is necessary for the proper functioning of the controller.

    The videos on that page also demonstrate in detail how to install the software, plug-ins, xml file and wiring and testing most of the features of the Mach3 USB interface.

    Hope this helps.

    Click the link to respond:
    How do you install the software for the Mach3 USB controller?

  • When wiring NC limit switches in series to the V5 BOB where are the connections made on the BOB?

    The breakout board has input pins on one side. Use these pins to connect limit switches. The return of the circuit goes to gnd which is located on the same side, where the input pins are located.

    Click the link to respond:
    When wiring NC limit switches in series to the V5 BOB where are the connections made on the BOB?

  • WHICH WIRES ARE CONNECTED TO THE EMERGENCY STOP BUTTON

    You can use one of the terminals on the input side of the breakout board to connect the e-stop switch.

    Click the link to respond:
    WHICH WIRES ARE CONNECTED TO THE EMERGENCY STOP BUTTON

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

    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.

    Click the link to respond:
    DO NEED LIMIT SWITCHES, IF SO WHAT IS YOUR RECOMMENDATION?

  • do you have a 4 pin male connector with the wires attached?

    Yes and properly soldered.

    Additional Information:
    20

    Click the link to respond:
    do you have a 4 pin male connector with the wires attached?

  • how long are your lead screws 3/8 and how much ? looking for 3/8 see my previous question

    We currently only stock 2 start lead screw for the 3/8".

    Click the link to respond:
    how long are your lead screws 3/8 and how much ? looking for 3/8 see my previous question

  • HOW DO I SET THE DIP SWITCHES?

    blueChick:

    X-axis
    “CW230 (3.0A) Driver”
    Set to 1/16 Microstep, 2.7A
    Dipswitches: 11001100
    Mach3 Motor Tuning: 1422.22 steps/in

    Y-axis
    “CW230 (3.0A) Driver”
    Set to 1/16 Microstep, 2.7A
    Dipswitches: 11001100
    Mach3 Motor Tuning: 1422.22 steps/in

    Z-axis
    “CW230 (3.0A) Driver”
    Set to 1/4 Microstep, 2.7A
    Dipswitches: 10101100
    Mach3 Motor Tuning: 1600 steps/in

    blackToe:

    X-axis
    “CW230 (3.0A) Driver”
    Set to 1/16 Microstep, 2.7A
    Dipswitches: 11001100
    Mach3 Motor Tuning: 1422.22 steps/in

    Y-axis
    “CW230 (3.0A) Driver”
    Set to 1/16 Microstep, 2.7A
    Dipswitches: 11001100
    Mach3 Motor Tuning: 1422.22 steps/in

    Z-axis
    “CW230 (3.0A) Driver”
    Set to 1/4 Microstep, 2.7A
    Dipswitches: 10101100
    Mach3 Motor Tuning: 1600 steps/in

    blackFoot:

    X-axis
    “CW8060 (6.0A) Driver”
    Set to 1/16 Microstep, 2.7A
    Dipswitches: 11001100 (“0”=down, “1”=up)
    Mach3 Motor Tuning: 914.29 steps/in

    Y-axis
    “CW230 (3.0A) Driver”
    Set to 1/16 Microstep, 2.7A
    Dipswitches: 11001100
    Mach3 Motor Tuning: 1422.22 steps/in

    Z-axis
    “CW230 (3.0A) Driver”
    Set to 1/4 Microstep, 2.7A
    Dipswitches: 10101100
    Mach3 Motor Tuning: 1600 steps/in

    greenBull:

    X-axis
    “CW8060 (6.0A) Driver”
    Set to 5.43A, 1/16 Microstep
    Dipswitches: 01100110 (“0”=down, “1”=up)
    Mach3 Motor Tuning: 914.29 steps/in

    Y-axis
    “CW8060 (6.0A) Driver”
    Set to 5.43A, 1/16 Microstep
    Dipswitches: 01100110
    Mach3 Motor Tuning: 914.29 steps/in

    Z-axis
    “CW8060 (6.0A) Driver”
    Set to 5.43A, 1/4 Microstep
    Dipswitches: 01100100
    Mach3 Motor Tuning: 1600 steps/in

    Click the link to respond:
    HOW DO I SET THE DIP SWITCHES?

  • 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.

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

  • How can I determine which wires on my stepper motor bellong to A+ A- B+ or B-?

    You can use a multimeter to determine the wires of the same coil (i.e A+ and A- belong to he same coil). The wires that are connected on the same coil will have relatively low resistance. A wire from one coil to another coil with have no continuity since the two coils are not touching each other.

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    How can I determine which wires on my stepper motor bellong to A+ A- B+ or B-?

  • how long are your lead screws 3/8 and how much ? looking for 3/8 see my previous question what is the minimum length and how much per inch