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Question #: 14348

Question: How should I connect the E-stop to the machine?

Current Solution

I would recommend wiring the E-Stop to an input terminal via an NC connection. This is the industry standard. It requires a NC (Normally connected) circuit for the machine to be operational, and when the circuit breaks, the machine shuts off. This is better than having a circuit NO (normally open), open circuit that requires a circuit to be created to have the machine shut off for safety.

Having en E-Stop run through the mains line would only work for a single circuit (or use multiple E-stops, which defeats the purpose). The E-stop connected to the input terminal would shut off all machine functions.

Respond:

Other Possible Solutions to this Question

  • 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 add information to this solution:
    How should I connect the limit switches to my laser controller?

  • How should I wire the E-stop button? NC or NO?

    I would recommend wiring the E-Stop to an input terminal via an NC connection. This is the industry standard. It requires a NC (Normally connected) circuit for the machine to be operational, and when the circuit breaks, the machine shuts off. This is better than having a circuit NO (normally open), open circuit that requires a circuit to be created to have the machine shut off for safety.

    Having en E-Stop run through the mains line would only work for a single circuit (or use multiple E-stops, which defeats the purpose). The E-stop connected to the input terminal would shut off all machine functions.

    Additional Information:
    100% agree. When we have our automatic fire suppression systems wired in, we always do them NC (Normally Connected/Normally Closed). You can see more at www.reactonfire.com/what-we-protect/cnc-fire-suppression/ If you're doing a fire system (ours or others) be sure to shut down the machine and mist collectors)

    Additional Information:
    100% agree. When we have our automatic fire suppression systems wired in, we always do them NC (Normally Connected/Normally Closed). You can see more at www.reactonfire.com/what-we-protect/cnc-fire-suppression/ If you're doing a fire system (ours or others) be sure to shut down the machine and mist collectors)

    Click the link to add information to this solution:
    How should I wire the E-stop button? NC or NO?

  • WHICH MACHINE SHOULD I BUY, THE GREENBULL OR BLACKFOOT?

    The greenBull can range is routing width sizes of 5 feet and 6 feet. The blackFoot has a 4 foot routing width.

    Previous Solution:
    The greenBull machine has a sturdier gantry than the blackFoot, so you can be more agressive with the cutting feedrate (cutting speed). The blackFoot is also a good machine, but it all comes down to the speed at which you want to produce the fabrication

    The spindle is also highly recommended for it's quietness and easier cleanup (no fan blowing the dust in the air)

    Click the link to add information to this solution:
    WHICH MACHINE SHOULD I BUY, THE GREENBULL OR BLACKFOOT?

  • SHOULD I SELECT THE GREENBULL OR BLACKFOOT CNC MACHINE?

    The greenBull can range is routing width sizes of 5 feet and 6 feet. The blackFoot has a 4 foot routing width.

    Previous Solution:
    The greenBull machine has a sturdier gantry than the blackFoot, so you can be more agressive with the cutting feedrate (cutting speed). The blackFoot is also a good machine, but it all comes down to the speed at which you want to produce the fabrication

    The spindle is also highly recommended for it's quietness and easier cleanup (no fan blowing the dust in the air)

    Click the link to add information to this solution:
    SHOULD I SELECT THE GREENBULL OR BLACKFOOT CNC MACHINE?

  • Should I wire the e-stop button to an input terminal or the mains voltage

    I would recommend wiring the E-Stop to an input terminal via an NC connection. This is the industry standard. It requires a NC (Normally connected) circuit for the machine to be operational, and when the circuit breaks, the machine shuts off. This is better than having a circuit NO (normally open), open circuit that requires a circuit to be created to have the machine shut off for safety.

    Having en E-Stop run through the mains line would only work for a single circuit (or use multiple E-stops, which defeats the purpose). The E-stop connected to the input terminal would shut off all machine functions.

    Additional Information:
    100% agree. When we have our automatic fire suppression systems wired in, we always do them NC (Normally Connected/Normally Closed). You can see more at www.reactonfire.com/what-we-protect/cnc-fire-suppression/ If you're doing a fire system (ours or others) be sure to shut down the machine and mist collectors)

    Additional Information:
    100% agree. When we have our automatic fire suppression systems wired in, we always do them NC (Normally Connected/Normally Closed). You can see more at www.reactonfire.com/what-we-protect/cnc-fire-suppression/ If you're doing a fire system (ours or others) be sure to shut down the machine and mist collectors)

    Click the link to add information to this solution:
    Should I wire the e-stop button to an input terminal or the mains voltage

  • How do I connect a heated bed to the whiteant

    Connecting a heater bed to the whiteAnt is currently unavailable with our current version electronics, as we have tried to get around that issue here! We do not have the available slot for another thermocouple, so reading the temperature will not be possible for the heater bed. Also doubling the heater bed and extruder is not recommended, in which our current electronics will not be able to work with the additional heater bed.

    Click the link to add information to this solution:
    How do I connect a heated bed to the whiteant

  • How do I connect my motor wires to the driver?

    Use the datasheet associated to the motor that you purchased. Use the bipolar parallel configuration to optimum performance. The datasheets are located in their respective motor product pages. Just click on the motion electronics at the left and scroll down to the motor you have and click on the title, or datasheet link next to the motor. The datasheet will either be in the form of a pdf, or within the instructions on that product page.

    Additional Information:
    wiring diagram



    Additional Information:

    Click the link to add information to this solution:
    How do I connect my motor wires to the driver?

  • Should I connect both the USB and the 25 pin connector of the parallel breakout board to the computer?

    The parallel breakout board has the db25 connector for data and the USB connector for power. Connect the USB from the computer to the parallel breakout board so the breakout board will have 5V of power coming from the computer. The db25 connector (connector with the 25 pins) receive data signals for each pin from 1 to 17 and have respective numbered screw terminals, some for input and some for output (18 to 25 are gnd pins).

    Click the link to add information to this solution:
    Should I connect both the USB and the 25 pin connector of the parallel breakout board to the computer?

  • HOW DO I CONNECT A TOUCH PLATE TO THE BREAKOUT BOARD?

    The instructions on how to do this are found here, in these two videos, http://buildyourcnc.com/PrimeronHomingandLimitSwitches.aspx

    Additional Information:

    Click the link to add information to this solution:
    HOW DO I CONNECT A TOUCH PLATE TO THE BREAKOUT BOARD?

  • How should I control a plasma torch, spindle and a laser on my CNC machine?

    It will depend on how you configure the machine to use the Laser and plasma. Is the laser on a separate gantry? That will determine the way you will connect the laser control system or if you use a typical CNC controller. The plasma will need inputs of THC on, THC up, THC down and outputs to trigger the plasma torch. I recommend the Pokeys57CNC for the plasma and you can also fire the laser with it, but you will not be able to do engraving with the laser unless you use a laser controller. If you use a laser controller, you will need to either build circuitry to switch the digital signals from which controller you will be using, or if you have the laser on a separate gantry, you can use a traditional laser controller connected to the stepper motor drivers on that gantry.

    Users response:
    I was planing on using same gantry, and installing plasma and laser module on z axis along the side with current router. Perhaps if it’s needed installing another z axis on current z axis. So that when I use plasma, router z will be homed and plasma z axis will be able to utilize thc.

    When you say “If you use a laser controller, you will need to either build circuitry to switch the digital signals from which controller you will be using,”
    If i install laser controller, pokeys and router motion card, do you mean all ( axis and router/laser/plasma) signals or just the one that controls router/laser/plasma?
    I was wondering if I could jump (parallel connect) axis signals from card to card without ?
    Also do you prefer ethernet card or usb?
    I really do appreciate your help :) thanx again.

    Buildyourcnc response:
    Not a problem at all.

    Remember that with all of that weight on the z-axis, you will not be able to do efficient raster style engraving.

    By putting the laser on another gantry, say at the far end of the table, then you would be able to use a laser controller that controls its own stepper motors and the nozzle can have fast swing motion for engraving. With the laser on the z-axis of the spindle (like see on the greenBull), you will only be able to do vector motions for the laser.

    You can also have a CNC interface and laser controller controlling the same stepper motor drivers, but you will need a few tri-state buffer chips where you can use a toggle switch for which controller has control of the drivers.

    Click the link to add information to this solution:
    How should I control a plasma torch, spindle and a laser on my CNC machine?

  • WHAT CABLE LENGTHS SHOULD USE FOR THE BLACKFOOT CNC MACHINE

    The blackfoot requires a total of 50 feet of cable.

    The X axis needs 15 feet
    The Y axis needs 17 feet
    and the Z-axis needs 18 feet

    These are 20 gauge 4 conductor cable.

    Click the link to add information to this solution:
    WHAT CABLE LENGTHS SHOULD USE FOR THE BLACKFOOT CNC MACHINE

  • What wiring should I use to connect two motors for one axis?

    Yes, you can use 2 motors in the same axis output, however you will still need a driver for that motor! Also depending on the orientation on which you mount the motor you might have to invert the direction of the motor, and that will be simple by swapping the A+,A-, to the B+,B- locations and vice versa, from the driver to the motor wiring.

    Also you can run a slave motor using another axis on the board, and setting it up in the Planet-CNC settings.

    Planet-CNC/File/Settings/Axes, here you will enter 3 in the Number of Axes location, and then change the Function of the Axis 4 to Slave 1. There you will have the 4th axis or A-axis be a slave for the x-axis.
    Slave 1 - X-Axis
    Slave 2 - Y-Axis
    Slave 3 - A-Axis
    Slave 4 - B-Axis
    Etc...

    Click the link to add information to this solution:
    What wiring should I use to connect two motors for one axis?

  • HOW DO YOU CONNECT THE INVERTER TO AC?

    Input to VFD:
    240V Active - R
    240V Neutral - S
    Ground - E

    Additional Information:

    Click the link to add information to this solution:
    HOW DO YOU CONNECT THE INVERTER TO AC?

  • HOW TO CONNECT THE SPINDLE INVERTER?

    U - Pin1
    V - Pin2
    W - Pin3
    Pin4 Dead

    Additional Information:
    My home made cnc is a big problem with my NC connection. When in start my spindle it will be gone wrong. It will be limith switch problem anytime. Need help thanks.

    Click the link to add information to this solution:
    HOW TO CONNECT THE SPINDLE INVERTER?

  • HOW TO CONNECT THE INVERTER WALL?

    Input to VFD:
    240V Active - R
    240V Neutral - S
    Ground - E

    Additional Information:

    Click the link to add information to this solution:
    HOW TO CONNECT THE INVERTER WALL?

  • How do I connect a Z-Axis touch plate to the Planet-CNC USB interface?

    "Semi automatic" measuring is possible.
    1. Place movable tool sensor (touch plate) on material.
    2. Click "Measure Offset Z". Tool will move down, touch sensor and move up.
    3. "Measure Offset Z" button is still down.
    4. Click "Offset - Current Z" - this will set offset Z
    5. Click "Measure Offset Z" again to release it and restore normal mode."

    The connections to the USB interface is as follows:
    - The spindle is connected to the gnd terminal (which is also connected to the end mill). Alternatively, you can connect the gnd directly to the end mill is access is permitted.
    - The touch plate (movable tool sensor) is connected to the Z-- terminal.

    What will happen: When the end mill (gnd) is in contact with the touch plate (Z--), there will be a connection from gnd to the Z-- triggering this Z-- action and the software will recognize the connection (like a button press, or a limit switch triggering).

    Additional Information:


    Additional Information:

    Click the link to add information to this solution:
    How do I connect a Z-Axis touch plate to the Planet-CNC USB interface?

  • HOW MUCH SILICONE TUBE DO I NEED FOR A GREEN LEAN TO CONNECT THE SPINDLE

    The greenlean requires 56 feet of 1/4 Inside Diameter and 3/8 Outside Diameter silicon tube for the spindle.

    Additional Information:
    20

    Additional Information:
    20

    Click the link to add information to this solution:
    HOW MUCH SILICONE TUBE DO I NEED FOR A GREEN LEAN TO CONNECT THE SPINDLE

  • How can I connect an inductive proximity sensor to the Mach3 USB controller?

    I would suggest using the NPN proximity sensor for the Mach3 USB or the Pokeys57cnc. The proximity sensors have a top DC voltage limit of 30 volts, so it would be best to use the 24V power supply that is used to power the controller. Both controllers have a 24V power requirement, so that is convenient.

    The blue wire of the proximity sensor is the GND wire and is connected to the 24V power supply's V- terminal. The brown wire is the positive wire and is connected to the V+ terminal of the 24V power supply. The black wire is the signal wire and is connected to the input terminal of the controller.

    Click the link to add information to this solution:
    How can I connect an inductive proximity sensor to the Mach3 USB controller?

  • how do I connect the parallel breakout board?

    You can go here to find the diagrams and instruction on connecting the parallel breakout board:

    https://www.buildyourcnc.com/item/electronicsAndMotors-parallel-breakout-relay

    Also, please make sure to watch all of the electronics tutorial videos here:
    https://www.buildyourcnc.com/CNCElectronicsandWiring.aspx

    Click the link to add information to this solution:
    how do I connect the parallel breakout board?

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