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Question #: 14635

Question: What size breaker is required for the 2.2kw 220v vfd ?

Current Solution

Since a 220V 2.2kW, or 2200W spindle will consume 9 to 10 amps at full torque:

2200W/220V = 10A
2200W/240V = 9.2A

then a 15 amp breaker would be suitable for this load.

Respond:

Other Possible Solutions to this Question

  • What are the model numbers for your 2.2kw 110v and 220v VFDs? Or can you share a link to their documentation?

    Documentation for Parameter setup is included with VFD purchase. For spindle wiring and programming, please refer to the product pages for the spindles or VFDs (or the combo kit) and scroll down to instructions. For further assistance you can contact customerservice@buildyourcnc.com

    Click the link to respond:
    What are the model numbers for your 2.2kw 110v and 220v VFDs? Or can you share a link to their documentation?

  • What steppers are required for the X, Y, and Z axis of the scratch build kit? Do they all need to be the same rating?

    The required motors are the 425 oz-in stepping motors, would be the required motors to run the machine efficiently.

    Click the link to respond:
    What steppers are required for the X, Y, and Z axis of the scratch build kit? Do they all need to be the same rating?

  • What is the minimum RPM for the 2.2kW spindle?

    Spindles with 2 poles, which is typically for these types of spindles will have a minimum RPM of 6000 RPM or 100Hz; however, I would not run the spindle below 15000 RPM or 250Hz to give a safety factor and no damage will occur.

    If you have a 4 pole spindle, then much lower RPMs can be achieved, and with higher torque than a 2 pole spindle. The 4 pole spindle will require more power than 2 pole spindles and will not be able to achieve as high maximum RPMs.

    Click the link to respond:
    What is the minimum RPM for the 2.2kW spindle?

  • on the 2.2Kw water cooled spindle, what is the cooling port thread type and size?

    It is an M8 metric size on the port going into the spindle, and a 1/4" compression on the other side.

    Is the M8 port a M8x1.25 or M8x1?

    If you are referring to the book build, use a chamfer bit that is large enough to create a chamfer for most of the edge of the 3/4" thickness of the board, but still has a sliver of space for the bearing on which to ride.

    Additional Information:
    Mine is M8x1mm. I replaced the stock fitting with a brass hose barb and used "steel wire reinforced vacuum hose" with a 1/4" ID because it resists kinking and collapsing.

    Click the link to respond:
    on the 2.2Kw water cooled spindle, what is the cooling port thread type and size?

  • What is the liquid input and output barb size on your 2.2kw water cooled spindle?

    The spindle water inlet and outlet fittings are 1/4 Inside Diameter and 3/8 Outside Diameter.

    You can find the silicone tubes here:
    https://buildyourcnc.com/item/pneumatic-hydraulic-silicone-tubing

    This fitting will connect to the pump (1/2" male to 1/4" female):
    https://buildyourcnc.com/item/pneumatic-hydraulic-Tube-Fitting-Female-to-Male

    And this fitting will provide a reduced barbed size (1/4") for the tube:
    https://buildyourcnc.com/item/pneumatic-hydraulic-Tube-Fitting-Barbed-to-Male

    Click the link to respond:
    What is the liquid input and output barb size on your 2.2kw water cooled spindle?

  • what is the current draw of the 220v VFD

    The current draw of the 220V VFD is 10 amps. Since the spindle is rated at 2.2kW, and the mains for the US 220V is in the range of 220V to 240V,

    2200W/220V = 10A
    2200W/240V = 9.167A

    So, the rage of current draw will be between 10A and 9A, but it is advisable to provide a buffer of about 5 more amps if possible.

    Click the link to respond:
    what is the current draw of the 220v VFD

  • What wire size to use from VFD to 2.2kW spindle?

    We use 16 AWG wires between the spindle and the VFD. This wire size has a maximum capacity for 22 Amps, a good buffer to eliminate any possibility for overheating. The 2.2kW using 220V may draw up to 10 Amps (220 x 10 = 2200).

    That is, all three wires are sharing the total current draw.

    Additional Information:


    Additional Information:


    Additional Information:
    grounding a spindle


    Additional Information:

    Click the link to respond:
    What wire size to use from VFD to 2.2kW spindle?

  • What collet size comes with the 2.2kw spindle?

    All of our spindles come standard with a 1/4" collet. The 2.2kw, and 4.0kw, can be upgraded to a 1/2" collet with a separate purchase.

    Click the link to respond:
    What collet size comes with the 2.2kw spindle?

  • Hi please could you tell me how to work out the size required for the stepper motors ? which kit to get thanks

    The size of motors required for your machine build will depend on many characteristics of the machine.

    If the machine uses a gantry (rather than moving the table bed) and the weight of the gantry (specifically with inertia),

    The mechanics used with the axes, lead screw, roller chain, timing belt or rack and pinion. Generally you will need less torque if using lead screw due to the mechanical advantage, but friction is important to consider.

    If you are building a 4'x8' or larger machine, it would be best to use: https://buildyourcnc.com/item/electronicsAndMotors-3axis-heavy-gantry-elcombo

    Otherwise: this electronics: https://buildyourcnc.com/item/electronicsAndMotors-3axis-425-elcombo should be fine for most configurations.

    If you feel that you need extra torque on the z-axis (the z-axis will use a very heavy spindle, for instance), use this electronics: https://buildyourcnc.com/item/electronicsAndMotors-3axis-651-elcombo

    Click the link to respond:
    Hi please could you tell me how to work out the size required for the stepper motors ? which kit to get thanks

  • What brand is the 2.2 kW spindle? Same for the VFD. Thanks.

    Spindles are generally covered up to 1 year after date of purchase. We do not repair them in house, but we do work with our manufacturer to replace defective units. Generally if you have a defective unit covered under warranty, we will issue a replacement.

    Click the link to respond:
    What brand is the 2.2 kW spindle? Same for the VFD. Thanks.

  • What size collet can the 2.2kW spindle use?

    All of our spindles come standard with a 1/4" collet. The 2.2kw, and 4.0kw, can be upgraded to a 1/2" collet with a separate purchase.

    Click the link to respond:
    What size collet can the 2.2kW spindle use?

  • Which electronics package is required for the CNC machine from the book designs?

    The book design uses all NEMA 23/24 motors which can be found here:
    https://buildyourcnc.com/item/electronicsAndMotors-3axis-425-elcombo

    I recommend the Mach3 USB option as you will be able to use the USB connection for control.

    If you are planning to build from the plans developed by the folks over at Woodsmith Magazine which is loosely based on the book design, use this electronics package:
    https://buildyourcnc.com/item/electronicsAndMotors-3axis-heavy-gantry-elcombo

    Click the link to respond:
    Which electronics package is required for the CNC machine from the book designs?

  • What are the physical dimensions of the 2.2kw VFD?

    On Monday, when I get back into the office, I will provide the dimensions for the 2.2kW spindle and I will also provide a drawing of these dimensions on the spindle 2.2kW page. Thanks.

    Additional Information:
    Spindle dimensional specifications:

    - Overall diameter is 80mm
    - The length of the outer housing is 200 mm
    - Diameter of the extension just below the spindle is 36mm and the length is 12mm
    - The Collet shaft diameter is 11.318 and the collet nut diameter is 16.75mm and both extend from the extension approximately 52.5 mm
    - The overall length is 264.5mm not including the air ports and the electrical connector (outer housing 200mm + extension 12mm + collet shaft and nut 52.5 mm).
    - The air ports extend 20 mm from the top of the spindle

    Click the link to respond:
    What are the physical dimensions of the 2.2kw VFD?

  • What size forstner are used in the book build your own cnc

    That was a very long time ago, but I think I was using 3/4". You can use a size just larger than the outer width of the nut.

    Click the link to respond:
    What size forstner are used in the book build your own cnc

  • What size of wire do you use to connect the VFD to 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 size of wire do you use to connect the VFD to the spindle?

  • What is the rpm range of the 2.2kw spindle and inverter?

    The VFD is capable of a maximum of 400 Hz frequency. That converts to 24,000 RPM for the spindle. The minimum frequency is 100 Hz which is 6000 RPM.

    Click the link to respond:
    What is the rpm range of the 2.2kw spindle and inverter?

  • What is the dimensions of the 2.2kW water cooled spendle?

    You can find 2.2 kW spindle dimensions on the spindle product page.

    Additional Information:

    Click the link to respond:
    What is the dimensions of the 2.2kW water cooled spendle?

  • What size/ kind of rail is the hiwin rail that you sell?

    My apologies for not having the specifications on the product page for our Hiwin rail and block:

    The specifications are as follows (we will add this information to the product page):

    Rail:
    Rail width: 20mm
    Mounting bolt: M5x16
    Mounting hole center to hole center: 60mm

    Guide Block:
    Width of block: 63mm
    Length of block:77.5mm
    Mounting holes distance in the width direction: 53mm
    Mounting holes distance in the length direction: 40mm

    Both:
    From bottom of rail to top of block: 30mm
    From block bottom to bottom of rail (clearance): 4.6mm

    Click the link to respond:
    What size/ kind of rail is the hiwin rail that you sell?

  • What is the dot resolution (size) of the BlackTooth laser?

    The dot resolution of the blackTooth is a combination of two specifications of the machine:

    - The steps/inch (or steps/mm) which is the resolution but not the dot size
    - The size of the actual dot, which is not specifically related to the resolution.

    The steps per or resolution can actually be a range, since the driver microstepping can be modified.

    A simple formula can be used to determine the resolution:

    step per inch = (motor steps * microstepping) / (travel at one turn of the motor in inches)

    if microstepping is set at 16 (1/16 on the driver) and you are using a pulley that has a pitch of .08 inches and 20 teeth on the drive sprocket

    = (200 steps * 16 microsteps) / (20 teeth * .08 inches)
    = 3200 steps / 1.6 inches
    = 2000 steps per inch

    To increase the resolution, just increase the microsteps on the driver.

    The actual dot size will depend on the lens you are using, the material being lased, the time period that the laser energy is applied to the material, and the focal height of the lens to the work surface material. The energy from the laser will converge to a point and create a dot on the surface (which is different than the kerf of the laser cut into the material).

    The dot will appear in different sizes depending on the material because, say wood, will burn causing a dot that burns the fibers of the wood and spreads a bit. The dot lased on the surface of a plastic, say Plexiglas, the dot will be smaller because the energy is absorbed only at that point, but since Plexiglas is a thermoplastic, a bit of the energy will melt the dot edges depending on the time frame (period) that the energy is applied to the surface.

    The focus of the laser energy from the lens looks like a cone converging to a point, then diverges outward after that point. Depending on the distance from the lens to the surface of the material, the dot will be bigger or smaller. You want to find focal point (where the energy is focused into a point). You can use the technique where you lay a material on a slope and lase that material along the slope to find the sweet spot (dot) and that will be your smallest dot, or kerf location. Remember that the kerf will widen or narrow within the material thickness depending on the focal length lens specification (the cone will be shorter or longer depending on the lens focal length).

    Click the link to respond:
    What is the dot resolution (size) of the BlackTooth laser?

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