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### Question #: 14905

Question: [2.2 kW (kilowatt) Inverter (Variable Frequency Drive - VFD)] What size circuit breaker should I use for this VFD?

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.

Respond:

### Other Possible Solutions to this Question

• [78] What size 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.

[78] What size circuit breaker should I use for this spindle?

• 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.

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

• [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.

[77] What circuit breaker should I use for this 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

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

• 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...

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

• [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

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

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

The best choice would be a type K thermocouple.

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

• What type of cable and gauge should I use from the vfd to the wall outlet?

I would recommend using 14/3 power cable for the connection from the wall outlet to the VFD. The 14 is the gauge and the 3 is the number of conductors (wires) in the cable.

What type of cable and gauge should I use from the vfd to the wall outlet?

• 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.

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.

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

WHAT CABLE LENGTHS SHOULD USE FOR THE BLACKTOE

• 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.

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

• How do I determine what CAM program I should use?

There are several specifications related to CAM software that you will need to consider.

1. The CAM software will need to be able to offer the features that match that of the machine you select to perform the fabrication. Some of these machines include, standard 3 axis vertical CNC milling machine, turning machine, and 4 or 5 axis CNC machine.

2. The CAM software will need to contain the features that you feel are necessary for how you will apply the machine. For example, are you making signs? Are you milling parts for a machine? There is a wide array of CAM software that will work well for one application and not another.

3. The CAM software will need to work well with your workflow and processes, and have the user interface that you prefer.

How do I determine what CAM program I should use?

• 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.

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

• 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.

grounding a spindle

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

• I have a blue brew break-out board. Do I use a seprate power supply for it and what amp output should it have if used.

We generally use the USB to power the interface (breakout board). The current from the computer is sufficient to supply the breakout board.

I have a blue brew break-out board. Do I use a seprate power supply for it and what amp output should it have if used.

• I have a blue brew break-out board. Do I use a seprate power supply for it and what amp output should it have if used.

We generally use the USB to power the interface (breakout board). The current from the computer is sufficient to supply the breakout board.

I have a blue brew break-out board. Do I use a seprate power supply for it and what amp output should it have if used.

• WHAT DIPSWITCH SETTINGS SHOULD I USE?

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

Scratch-Build / Book-Build Kit:

X-axis
“CW230 (3.0A) Driver”
Set to 1/4 Microstep, 2.7A
Dipswitches: 10101100 (“0”=down, “1”=up)
Mach3 Motor Tuning: 1600 steps/in

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

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

Scratch built/book CNC with NEMA 34 motors and CW8060 microstep driver

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WHAT DIPSWITCH SETTINGS SHOULD I USE?

• [807] What size power supply do I need to this?

I would recommend either a 36VDC or a 48VDC power supply with 10 amps. Here are links to these power supplied on this website:

https://buildyourcnc.com/item/electronicsAndMotors-power-supply-24v-36v-48v

[807] What size power supply do I need to this?

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