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Question #: 14906

Question: [2.2 kW (kilowatt) Water Cooled Spindle] What size circuit breaker should I use for this spindle?

Current Solution

The 2.2kW spindle has a power rating of 2.2kW or 2200 watts.

If the VFD AC voltage input is rated for 220 volts, then 2200 watts / 220 volts is 10 amps, so a 15 or 20 amp breaker will work.

If the VFD AC voltage input is rated for 110 volts, then 2200 watts / 110 volts is 20 amps, so a 25 or 30 amp breaker will work.

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Other Possible Solutions to this Question

  • [77] What circuit breaker should I use for this spindle?

    The 2.2kW spindle has a power rating of 2.2kW or 2200 watts.

    If the VFD AC voltage input is rated for 220 volts, then 2200 watts / 220 volts is 10 amps, so a 15 or 20 amp breaker will work.

    If the VFD AC voltage input is rated for 110 volts, then 2200 watts / 110 volts is 20 amps, so a 25 or 30 amp breaker will work.

    Click the link to add information to this solution:
    [77] What circuit breaker should I use for this spindle?

  • [79] What size circuit breaker should I use for this VFD?

    The 2.2kW spindle has a power rating of 2.2kW or 2200 watts.

    If the VFD AC voltage input is rated for 220 volts, then 2200 watts / 220 volts is 10 amps, so a 15 or 20 amp breaker will work.

    If the VFD AC voltage input is rated for 110 volts, then 2200 watts / 110 volts is 20 amps, so a 25 or 30 amp breaker will work.

    Click the link to add information to this solution:
    [79] What size circuit breaker should I use for this VFD?

  • what size circuit breaker should I use with the 2.2KW VFD?

    The 2.2kW spindle has a power rating of 2.2kW or 2200 watts.

    If the VFD AC voltage input is rated for 220 volts, then 2200 watts / 220 volts is 10 amps, so a 15 or 20 amp breaker will work.

    If the VFD AC voltage input is rated for 110 volts, then 2200 watts / 110 volts is 20 amps, so a 25 or 30 amp breaker will work.

    Click the link to add information to this solution:
    what size circuit breaker should I use with the 2.2KW VFD?

  • 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 add information to this solution:
    What kind of wire should I use between the invertor and the spindle?

  • [797] What power supply should I use for this relay?

    The dual 24VDC relay can use any 24V power supply that outputs 24V DC. A great power supply that will work well with this dual 24VDC relay is this power supply: https://buildyourcnc.com/item/electronicsAndMotors-power-supply-24v-1a-dc

    Click the link to add information to this solution:
    [797] What power supply should I use for this relay?

  • What settings does I use for controlling the spindle in StepCon/Linuxcnc?

    LinuxCNC has excellent documents; however, I would like to offer our help in case you don't understand the information on that page. So, please use this FAQ (Question #: 13233) to state your questions by submitting additional information below.

    The LinuxCNC spindle control page is found here: http://linuxcnc.org/docs/html/examples/spindle.html

    Additional Information:
    After reading the LinuxCNC page my first questions would be can the spindle be controlled by PWM signal? Also, what pin on the parallel port would I set to Spindle Enable and FRW?

    Additional Information:
    To connect your computer to the VFD, use a USB to RS-485 interface. RS-485 is just a serial interface protocol that uses standard 0 to +5 voltage TTL signal levels for communication (as opposed to RS-232 which uses -12v and +12 for signal level changes).

    Get a high quality interface to reduce any issues during the process. The VFD should have two terminals labeled RS+ and RS-. The USB to RS-485 adapter should have this labeled on it as well so the connections should be relatively straight forward.

    In the VFD parameters:
    PD001: 2 to accept RS485 commands
    PD002: 2 to accept frequency comands
    PD163: 1 to RS485 slave address:1
    PD164: 1 RS485 baud rate 9600
    PD165: 3 8bit, no parity, 1 stop bit

    Make sure LinuxCNC is also set accordingly:

    The PIN14 and PIN16 in the stepconf wizard should be set to unused because you don't want LinuxCNC to be outputting unnecessary signals.

    In the options step of the stepconf wizard:
    - Check the Include Halui user interface component.
    - Check the Include custom PyVCP GUI panel.
    - Check Spindle speed display

    You will want to edit the custom.hal text file located in the folder that was created from the stepconf wizard. Add these following lines:
    loadusr -Wn vfd hy_vfd -n vfd -d /dev/ttyUSB0 -p none -r 9600
    net spindle-cmd-rpm-abs => vfd.speed-command
    net spindle-cw motion.spindle-forward => vfd.spindle-forward
    net spindle-ccw motion.spindle-reverse => vfd.spindle-reverse
    net on motion.spindle-on => vfd.spindle-on

    The dev folder in linux is typically used for interfacing devices and peripherals to the computer as these devices are communicated by simple memory addresses and these files are linked directly to these addresses.

    Under the custom_postgui.hal file, change this line:

    from: sets spindle-at-speed true
    to: net spindle-at-speed => cfd.spindle_at_speed

    and add the line:

    setp vfd.enable 1

    When you start LinuxCNC, you will a spindle section with the reverse and forward buttons, a stop button and - and + buttons. Use these buttons to conform that the spindle is functioning properly. The spindle speed indicator in LinuxCNC will show the spindle speed and you can confirm that this is equal to the speed indicated on the VFD.


    Credit for this helpful information goes to:


    Additional information was also added by us to provide a better understanding.

    Click the link to add information to this solution:
    What settings does I use for controlling the spindle in StepCon/Linuxcnc?

  • Which spindle should I use for PVC and Trespa (Hardwood)? Max diameter of cutter = 16mm Max thickness plate = 20mm

    Either material, PVC or Trespa can be milled using our standard 2.2kW spindle.

    https://buildyourcnc.com/item/spindle-inverter-2!2kw-spindle-vfd

    Click the link to add information to this solution:
    Which spindle should I use for PVC and Trespa (Hardwood)? Max diameter of cutter = 16mm Max thickness plate = 20mm

  • 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?

  • What thermocouple or thermister should I use for the extruder hot end?

    The best choice would be a type K thermocouple.

    Click the link to add information to this solution:
    What thermocouple or thermister should I use for the extruder hot end?

  • [797] Should I use a 24V power supply for this relay?

    The dual 24VDC relay can use any 24V power supply that outputs 24V DC. A great power supply that will work well with this dual 24VDC relay is this power supply: https://buildyourcnc.com/item/electronicsAndMotors-power-supply-24v-1a-dc

    Click the link to add information to this solution:
    [797] Should I use a 24V power supply for this relay?

  • I have the 2.2 kW spindle and VFD for 110v, just wondering what amperage this draws, as my electricain buddy is telling me I need to put in a 20 amp breaker for this. I cant seem to find any amerpage draw on the INPUT label

    You can actually set a current limit in in the VFD using the programming process and the specifications in the manual that came with your VFD. You can expect the spindle at 220 Volts AC to draw (using the standard formula):

    For Volts, I will use 230 as the range is generally 220 to 240.

    Watts = Current * Volts

    Can also be written as:

    Current = Watts / Volts

    Current = 2.2kW (2200 watts) / 230 volts

    Current = 9.6 amps

    Click the link to add information to this solution:
    I have the 2.2 kW spindle and VFD for 110v, just wondering what amperage this draws, as my electricain buddy is telling me I need to put in a 20 amp breaker for this. I cant seem to find any amerpage draw on the INPUT label

  • Why should I use a spindle rather than a router?

    The spindle is quieter and has more consistent torque (It doesn't get "bogged down" when it starts cutting into material). It can be used with collets of varying sizes (not restricted to imperial sizes). It is water cooled and so it does not blow air downward to cool the spindle like the router does. The spindle is also machined with much higher precision than typical routers and will have a much longer life.

    Click the link to add information to this solution:
    Why should I use a spindle rather than a router?

  • 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.

    Additional Information:

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

  • what depth increment should I use for pocketing and profiling with the 1/2" end mill?

    The pocketing depth per pass will depend on the hardness of the material, the router/spindle you are using and on the melting point of the material. Use the feedrate that you would normally use for the size and type of end mill. You will need to test the depth per pass, starting at the full depth of the pocket. The spindle should have no problem, but if you are using a router, then it may bog down, so easing up on the depth per pass is recommended. If the spindle/router has no problem at the depths you are using, then you need to evaluate the edge finish to determine if it is acceptable. If it is not acceptable, then ease up on the depth per pass. Keep doing these steps until you have the finish and precision you expect.

    Click the link to add information to this solution:
    what depth increment should I use for pocketing and profiling with the 1/2" end mill?

  • WHAT CABLE LENGTHS SHOULD USE FOR THE BLACKTOE

    The motor cables for the blackToe are as follows:

    Total 30 feet

    X - 9
    Y - 10
    Z - 11

    Additional Information:



    Additional Information:



    Additional Information:



    Additional Information:

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

  • WHAT ELECTRICAL CABLE DO I USE TO CONNECT VFD INVERTER 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 add information to this solution:
    WHAT ELECTRICAL CABLE DO I USE TO CONNECT VFD INVERTER SPINDLE?

  • Spindle is making a strange sound for a few seconds then shuts off. It is also tripping the breaker on the surge protector. Is this fixable? https://youtu.be/aofbvY3RnIw

    Yeah, that is not right at all. I think you either have an issue with the shaft, or the bearings are bad. Probably the latter. How old is the spindle?

    Additional Information:
    I bought this off craigslist so it is at least 3-4 years old. I've been hearing an odd noise for the last week or two so I'm thinking it was starting to fail.

    Additional Information:
    I would say that it has lived its life. In CNC routers, routers will last far shorter time. Spindles are relatively inexpensive, so I would just replace it.

    Click the link to add information to this solution:
    Spindle is making a strange sound for a few seconds then shuts off. It is also tripping the breaker on the surge protector. Is this fixable? https://youtu.be/aofbvY3RnIw

  • WHAT SIZE COLLET IS IN YOUR 1.5 KILOWATT SPINDLE?

    The collet in the 1.5 kW spindle is an ER-11 and cannot reach the 1/2" size. I would consider the 2.2 kW spindle instead.

    Click the link to add information to this solution:
    WHAT SIZE COLLET IS IN YOUR 1.5 KILOWATT SPINDLE?

  • What 1/2" collet and nut do I use for the Greenbull with the 2KW spindle? I want to order the Onsrud Spoilboard surfacing cutter.

    For the 2.2kW Spindle you would need the ER20 1/2" Collet.

    Click the link to add information to this solution:
    What 1/2" collet and nut do I use for the Greenbull with the 2KW spindle? I want to order the Onsrud Spoilboard surfacing cutter.

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