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### Question #: 13748

Question: The spindle drops on our greenBull when power is turned off. How do we stop this?

Current Solution

When you say the spindle drops, are you referring to the z-axis assembly that contains the spindle? If so, did you replace the lead screw and anti-backlash nut with a ball screw? Ball screws have extremely little friction and will cause an assembly under gravity to move down. If not, your lead screw and anti-backlash nut friction is extremely small, which is surprising and I have never seen this before. I would be interested in seeing a picture of the assembly. Please send a picture to techsupport@buildyourcnc.com so I can investigate this issue further.

We haven't replaced or disassembled anything on the z-axis. I will try to get some photos sent to you. Are there any adjustments or recommendations for PM of the z-axis assembly?

Can you tell me what PM means?

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### Other Possible Solutions to this Question

• What is the Greenbull average power consumption in conjunction with 2.2KW spindle?

You can determine you overall CNC machine current consumption be adding your spindle power plus your CNC motion power and the power that your computer requires.

the formula to understand the current of each component is watts = volts x current, or W = V * I, or with some algebra, Current (I) = Watts (W) / Volts (V)

For example:

Spindle:
The 2.2 kW = 2200 watts and you can find the current by taking the input voltage of 220 volt and get the current using the above formula: 2200 W / 220 V = 10 A (Amps)

CNC motion electronics:
The power supply that comes with our machines is generally 8.8 A

Computer:
The computer that you use to control the CNC machine will have a specific wattage. Let's say the watts is 500: 500 W / 110 V = 4.5 A

Add them up: 10 A + 8.8 A + 4.5 A = 23.3 Amps

What is the Greenbull average power consumption in conjunction with 2.2KW spindle?

• BUILDING ONE OF YOUR GREENBULL 6X LONG AND 2.2 KILOWATT SPINDLE DOES NOT FIT. SEEMS LEAD SCREW YOU SENT WITH KIT IS SHORT 42" LOOKS LIKE IT NEEDS TO BE 5 OR 6 INCH LONGER. THIS CORRECT? WHAT THE NEEDED LENGTH FOR UNIT?

The leadscrew length for the greenBull long Z-axis is 47 inches.

• Hello, I bought your 110v 2.2kw spindle and vfd. When I turn it on it reaches the full 24000 rpm, but will not let me decrease the speed. How Can I fix this?

Are you using the control panel (front panel with the speed control knob known as he potentiometer)? Or are you attempting to use the computer to control the speed?

I am using the control panel, however there is no knob on mine, just buttons.

• Hi i am interested in the greenBull 6x with Hybrid Laser/Spindle Head (includes Spindle/VFD and Laser Components) - USB Interface (Long Z). I was wondering how much it would cost to get this machine to NZ?

You can use our shopping cart to determine the shipping. Add the machine and the parts you want to purchase, enter your shipping address and click on the Calculate Shipping Button to get a price for shipping. The shipping charges are determined directly from the carriers at the time of pressing that button.

• Building one of your greenBull 6X Long and 2.2 kilowatt spindle does not fit. Seems lead screw you sent with kit is short 42" looks like it needs to be 5 or 6 inch longer. Is this correct? What is the needed length of lead screw for this unit?

The leadscrew length for the greenBull long Z-axis is 47 inches.

• DOES THE SPINDLE RUN ON A 50HZ POWER SOURCE?

The spindle inverter (VFD) will run on a 220V (or between 170V-250V) power source with either 50Hz or 60Hz.

DOES THE SPINDLE RUN ON A 50HZ POWER SOURCE?

• On this page https://buildyourcnc.com/item/cnc-machine-greenBull-v4-4X-hybrid, at the top it states \$5K for the kit with laser/spindle combo, but below states it includes only the spindle. Is the laser included in the kit?

Yes, that is confusing and I will change the wording so it makes more sense. It does include the laser components including the laser tube (drop-shipped), laser power supply, nozzle, and lens. There are two options on that page and the only difference between those options is whether it is assembled or not.

Sorry for the confusion. Thanks.

• Good morning, I would like to know if the strength of the 2.2kw spindle is weaker when using the 110V version of the VFD. Does it have the same power as the 220V version VFD?

The 2.2kW spindle will have the same amount of torque and strength using either the 110V or the 220V inverter. Nothing will significantly change in either application since the 110V inverter has a small step up transformer which will increase the voltage from 110V to 220V to run the spindle efficiently.

I'd like confirmation on this -- isn't there a cost in efficiency to having the 110v step up to 220v?

• Do you have a diagram on how to connect the vfd so the CNC controller box can turn the spindle on and off whenever i start a job?

The following videos are helpful when connecting the VFD to a pokeys57CNC controller; however, there is useful information on the external terminals of the VFD and how to connect the VFD to any controller using a relay. Additionally, the videos have useful information on how to program the VFD.

Start and stop for spindle
https://youtu.be/0SLFuM4tzuU

Speed control:
https://youtu.be/pA69t1ZLY2s

The following video uses the Mach3 usb controller to control a spindle.

• Your 2.2kw spindle w/inverter is out of stock for 110v, do you anticipate on offering these soon?

We may deprecate these units as we had too many issues with them.

Your 2.2kw spindle w/inverter is out of stock for 110v, do you anticipate on offering these soon?

• can't get breakout board with relay working. in your video you show a 5v power supply input on the usb one but can't not find on this one?

What part of your breakout board is not working? Are you having trouble getting a signal from the computer out of the breakout board to the drivers?

The breakout board uses the USB as the 5v power source.

Wiring the limit switches

I am using my breakout board as port 2 from my ess smooth stepper only for limits so it's powered via 12v , now I want to use pin 17 to trigger my plasma will I still need to supply 5v power to is a well? As I'm not using the usb it's connected to smooth stepper via 25pin ribbin

• My VFD/inverter is showing an er.04 er 04 on the display when the spindle starts spinning

The Er.04 (if you are using the YL VFD), generally refers to the ramping up and ramping down of the spindle, but it can be a result of a short circuit between the VFD and the spindle. You can increase the time the spindle accelerates (ramps up to the set rpm/frequency).

My VFD/inverter is showing an er.04 er 04 on the display when the spindle starts spinning

• What are the dimension of the greenBull 4x with dual laser/spindle head?

The shipping weight (with crate) of the greenBull 4X CNC machine with the dual laser/spindle head is 230 lbs. The overall dimensions are: 76"x36"x27". The crate is typicall send via freight.

What are the dimension of the greenBull 4x with dual laser/spindle head?

• 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.

• When Blacktooth is powered on the motors get power but will not turn. What should I do?

The motors could be wired incorrectly causing them to lock up. Make sure to check the wiring to make sure the X and Y are connected to the correct terminals.

When Blacktooth is powered on the motors get power but will not turn. What should I do?

• I am looking at purchasing the greenbull 5X system with the laser/spindle combination. Can the laser do both rastered engraving as well as vectored cutting with the same breakout board and software? If I have this wrong please let me know what would be needed to accompish this.

You can do raster and vector engraving on the greenBull laser/spindle combination. The methods of this process is not accomplished in the same way as the typical laser machines where CorelDRAW is used. The Mach3 laser plug-in can be used for the raster engraving and standard CNC g-code can be used for vector cutting and engraving.

The raster method will not be fast on the greenBull since the z-axis is heavy and there are inertial limitation on doing fast raster back and forth movement. Vector is the best use of this machine.

• The laser adapter for the greenBull can host laser tubes more powerful than 80W?

The laser mount for the greenBull is designed and suited for a 40W tube only. The 80W tube is too large to mount on the gantry.

The laser adapter for the greenBull can host laser tubes more powerful than 80W?

• How to use the power supplier with laser an commands ? Where is the documentation ?

Dealing with our laser power supplies you can find a simple schematic/wiring diagram here ((Parallel)https://www.buildyourcnc.com/images/LaserWiringParallel.jpg / (USB)https://www.buildyourcnc.com/images/LaserWiringUSB.jpg),
Now you can also find steps for our blackTooth laser cutter/engraver from steps 55-68 on our website here (https://www.buildyourcnc.com/blackToothLaserCutterAndEngraver.aspx).

One of our previous customers gave us a courtesy of making a detailed forum on our blackTooth laser cutter assembly (http://blacktoothlaser.blogspot.ca/2013/04/index-for-blacktooth-laser.html?view=classic).

How to use the power supplier with laser an commands ? Where is the documentation ?

• what is the horse power rating for the 2.2 kw spindle motor

I don't know the exact temperature, but the spindle actually needs to get to a relatively high temperature for normal operation and to protect the bearings. IF I find better information from our supplier, I will add this information to this answer.

what is the horse power rating for the 2.2 kw spindle motor

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