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Question #: 14349

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

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.

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Other Possible Solutions to this Question

  • 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.

    Click the link to respond:
    How should I wire the E-stop button? NC or NO?

  • The input terminals for limit, home or estop doesn't work. 11, 12 and 13 seem to trigger pin 11.

    The jumper needs to be set on the 3 pin header on the green breakout board. Put the jumper on the two pins closest to the chip.

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    The input terminals for limit, home or estop doesn't work. 11, 12 and 13 seem to trigger pin 11.

  • What kind of wire should I use between the invertor and the spindle?

    The type of wire that should be used between the spindle and the VFD (Variable Frequency Driver also called the inverter) should be of stranded type and we use between 18 and 16 AWG.

    The total current is divided among the three coil wires, therefor a wire gauge of 16 should be sufficient.

    Currently we use 20AWG 4 conductor.

    Additional Information:

    Click the link to respond:
    What kind of wire should I use between the invertor and the spindle?

  • Do you have data sheets available for the Adjustable Rotary Limit Switch and E-Stop (Emergency Stop) Button - 120v-10A/240v-6A?

    If the products have documents available, they are generally found on the product page itself, somewhere in the description or under the instructions.

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    Do you have data sheets available for the Adjustable Rotary Limit Switch and E-Stop (Emergency Stop) Button - 120v-10A/240v-6A?

  • I ordered the blacktooth laser cutter, there were only 4 red spade terminals, but the instructions pictures show that there should be more and would include blue spade terminals

    If you received fewer parts than is called for in the instructions, we will send the proper parts to you. Please call us to have these parts sent to you.

    Click the link to respond:
    I ordered the blacktooth laser cutter, there were only 4 red spade terminals, but the instructions pictures show that there should be more and would include blue spade terminals

  • HOW CAN WE IDENTIFY THE INPUT VOLTAGE OF LASER POWER SUPPLY

    The laser power supply will have a marking on the main coil as to the input voltage. The main coil is the large block inside of the power supply that connects to the high tension line.

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    HOW CAN WE IDENTIFY THE INPUT VOLTAGE OF LASER POWER SUPPLY

  • How should I connect the E-stop to the machine?

    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.

    Click the link to respond:
    How should I connect the E-stop to the machine?

  • What wire gauge should be used for the 36V 8.8 amp power supply

    Most of our power supplies allow for a 9 amp current draw.

    For the Neutral, Live and earth ground, wire gauge for that level of current is 14 for relatively short cable lengths. Increase the gauge for longer lengths past 25 feet.

    For the DC 24V output terminals to the drivers, 20 gauge is fine. If the power supply is connecting to only one driver, increase the wire gauge to 14.

    Additional Information:
    What gage wire should I use from motor to driver

    Click the link to respond:
    What wire gauge should be used for the 36V 8.8 amp power supply

  • In the 3 Axis Electronics Combo, what is the AC input of the power supply (110v or 220v??). is it possible to specify a certain voltage when ordering?

    In our 3-Axis electronics kit, the power supply's provided are capable of both 110V-220V. You have the capability to switch between both in case you might decide to run 220v in the near future or will relocate where 110v is being used.

    Additional Information:
    Connect spindle to the board

    Click the link to respond:
    In the 3 Axis Electronics Combo, what is the AC input of the power supply (110v or 220v??). is it possible to specify a certain voltage when ordering?

  • Limit, E-stop and home switches: To set up the maximum number of switches set up I would need 2 BOB's, correct? How is this implimented and wired?

    The parallel breakout board allows for 4 input connections. Each input connection can have an unlimited number of switches, but if you need to separate the switch circuit for, say, all of the home switches, you can use another input pin. There is no need to add another breakout board to add more switches unless you need to use the input pins for totally unique conditions that may or may not be related to CNC functions.

    Customer response:
    To Clarify: I need to set up 3 home switches which can double for limits (that's 3 pins.). Another pin for a probe. That's 4 pins used. Now I need to set up the other limit and E-stop switches. No pins left, how do I do that? Can a ground pin be doubled up on?

    Plus, I have a SuperPID. Another pin?

    Additional answer:
    You can put all of your limit switches (including the E-stop which serves the same purpose as the limit switches) and home switches on a single pin. When homing, mach3 will move the axis it wants to home, hit the switch, pull away from the switch, then move the next axis and repeat the steps for the next two axes.

    The probe is on the 2nd pin. The SuperPID is on the 3rd pin and now you have another pin remaining.

    The GND terminal can be doubled up.

    Additional Information:
    how about a diagram to reference showing the pin-out to use

    Here is the diagram for the parallel breakout board (pins 10 through 13 are used for input):

    The circuit is from the GND to the input

    Here is the diagram for the Mach3 USB board (pins I1 through I4 are used for input):
    https://www.buildyourcnc.com/Documents/Electric%20Wiring%20Diagram.pdf
    The circuit is from the V- to the input pin

    Click the link to respond:
    Limit, E-stop and home switches: To set up the maximum number of switches set up I would need 2 BOB's, correct? How is this implimented and wired?

  • 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.

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    WHICH WIRES ARE CONNECTED TO THE EMERGENCY STOP BUTTON

  • When using shielded wire from driver to stepper motor, where should I connect the shielding? Should it be ground on transformer or something/somewhere else?

    If you are using shielded wire between the motor and driver, the shielded portion (the reflective jacket within the insulated portion of the wire) and any spare wires, or stranded wire should all be grounded and be inserted into the GND terminal on the driver.

    Click the link to respond:
    When using shielded wire from driver to stepper motor, where should I connect the shielding? Should it be ground on transformer or something/somewhere else?

  • How should I wire the 2.2kw spindle and vfd?

    You can find the wiring diagram for the 2.2kW spindle and, follow through instructions here.
    https://www.buildyourcnc.com/item/spindle-inverter-2!2kw-spindle-novfd#prettyPhoto/8/

    Additional Information:


    Additional Information:
    wiring diagram at spindle top


    Additional Information:

    Click the link to respond:
    How should I wire the 2.2kw spindle and vfd?

  • I'm trying to get the planet-cnc mist, coolant and spindle output to work. It's showing no voltage when I test

    On the Planet-CNC board, the Mist, Spindle and Coolant outputs will require a relay to switch on those devices. Test one of those terminals with a multi-meter (Mist, Coolant, or Spindle). Each of these terminals have a GND next to the terminal for the device.

    Test the voltage across the GND to the terminal with the arrow that you want to test. Go to the software and click on the device you want to test (mist, coolant or spindle) and note the voltage. If no voltage is output then check under the board to where the terminals are soldered. Re-test the terminals across the solder joints rather than the terminal block wire inputs. If you get a voltage, then there is a problem with the terminal block. If you don't get a voltage, then the board is not functioning properly.

    Additional Information:
    I activated the output signal.. I did the tests indicated and I did not get voltage. I heated the welds of the three outputs and now works coolant but no mist or spindle, what should I do?

    Additional Information:
    There are probably cold joints on the board at the chip or the resistors on the traces for those terminals. You can send the board back to us and we will repair and test the board.

    Click the link to respond:
    I'm trying to get the planet-cnc mist, coolant and spindle output to work. It's showing no voltage when I test

  • 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).

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

  • MOTOR GOING TWO DIRECTION WHEN JUST PUSH UP. IT WILL GO DOWN AND THEN GOES AGAIN UP WITH THE SAME BUTTON.

    Try slowing your feedrate down and increasing spindle RPMs. End-mills will leave a poor finish if you go too fast. Make sure your cutting depth isn't too much. Maybe the endmill or cutter is blunt? Could it be the feed direction of the cutter? Some materials need to be fed in a certain direction.

    Click the link to respond:
    MOTOR GOING TWO DIRECTION WHEN JUST PUSH UP. IT WILL GO DOWN AND THEN GOES AGAIN UP WITH THE SAME BUTTON.

  • MOTOR GOING TWO DIRECTION WHEN JUST PUSH UP. IT WILL GO DOWN AND THEN GOES AGAIN UP WITH THE SAME BUTTON.

    The wire coming from the CW from the driver. Move it to another pin on the breakout board and set the new pin in software.

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    MOTOR GOING TWO DIRECTION WHEN JUST PUSH UP. IT WILL GO DOWN AND THEN GOES AGAIN UP WITH THE SAME BUTTON.

  • I have the AVR programmer USBasp. Should I download and use the sparkfun driver as your tutorial states?

    I created videos that explain how to setup and install the USBasp here:

    &index=3&list=PLE72E4CFE73BD1DE1

    Do not use the video that show the setup of the USBTiny.

    Also, use this video that continues the USBasp installation.

    &index=4&list=PLE72E4CFE73BD1DE1

    Click the link to respond:
    I have the AVR programmer USBasp. Should I download and use the sparkfun driver as your tutorial states?

  • My Spindle has 4 pins but only the U, V and W terminals at used for the Spindle. What about the 4th pin?

    The terminals of U, V and W from the VFD (Variable Frequency Drive) connects to the three coils (first three pins of the connector) of the spindle. The 4th pin in the spindle is typically not connected; however, bring a wire from the PE (Protective Earth or Earth Ground) from the VFD and connect it to one of the screws of the connector on the spindle. This will ground the body of the spindle.

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    My Spindle has 4 pins but only the U, V and W terminals at used for the Spindle. What about the 4th pin?