The E.Lu.5 Error code on your VFD is related to Low Voltage.

The recommended action is:
- 1. Check whether the input voltage is normal. (the voltage from the wall/breaker to the VFD)
- 2. Check whether there is a sudden change in load.
- 3. Check whether there is any phase missing.

Unfortunately, these three recommended actions will probable require an electrician to test the line going into the VFD.

Additional Information:

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I have wired up my 110v VFD and my 2.2Kw spindle and I get an E.Lu.5 code. My wiring is correct and the parameters are set to those for the VFD according to your website I found in a previously answered question from someone here. Any help would be greatly appreciated, thank you!!

You will need to look for the parameter that controls the run frequency. The frequency can be controlled bu the panel, external terminals, or the RS485 TX/RX terminals (UART protocol). You will want to change that parameter so it uses the panel. If you are referring to the maximum panel dial frequency is only allowing 200-300 rpm, then look for the parameters to control the frequency.

For 200 RPM:
Hz = 200/60 = 3.33 Hz

For 300 RPM:
Hz = 300/60 = 5 Hz

Conversion to RPM:
If you ever find yourself yearning to reverse-engineer the process, the formula is as follows:

RPM = Hz × 60

Look for values that match somewhere between 3 and 5 in your frequency parameters and replace them with 400 to give you 24,000 RPM max.

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I HAVE A 2.2KW WATER COOLED SPINDLE WITH YL620-H VFD. THE VFD USES P#-## PROGRAM FORMAT. BELIEVE ALL CORRECT SETTINGS SETUP BUT WHEN TURN UNIT ON, IT SPINS AT ABOUT 200-300 RPM REGARDLESS OF WHAT FREQUENCY CHOOSE. DO YOU PARAMETERS IN THIS FORMAT FOR UNIT? THANK YOUR HELP. HUIBERT MEES

Thanks for the information. The system I sell (Ruida DSP Controller RD RDC6442G) can help as it is specifically designed for Laser machines and can be very fast for engraving swings, acceleration, and speed control specifically designed for the laser intensity. The Ruida controller works very well with the Lightburn software. Ruida controllers are very widely used in the laser community.

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[787] Few month ago I finished my own design an also finish to built it . The control I use is arduino uno with cnc shield v3. The machine works perfectly. But... very slow. I try and change the controller to dlc32 v2. It does not work for me. Too many problems. I tried every option fro github and only frustration is what I gain. Can your system be helpfull?. I use light burn as my design program

Text the image to 281-815-7701.

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I set up my limits in Mach3 but after restarting machine/program it does not allow me to use them, keep getting error they are out of limits. I have a picture of how they are set and worked at least one time. but not sure how to share it

Make sure to watch this video that I created to correctly connect a VFD to the Mach3 USB controller. Yes, the 10V terminal on this controller is an input. VFDs typically have a 10V output that can be connected to this terminal.

Additional Information:
The video is here:

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[575] I want to run a SAKO VFD SKI780 by means of this break out board. On https://www.youtube.com/watch?v=P6xxHj6qYSA is mentioned that the 10V terminal on the BOB is an input connection and that it ha to be connected with an external 10V supply source to obtain a 0-10V PWM signal on the AVI terminal of the BOB. I this correct?

The HY VFD has three main terminals for PWM control. These terminal inputs are:
- VI for the analog (PWM) voltage input (input at the VFD, output at the controller, i.e. the Mach3 USB controller),
- 10V output (this is an output from the VFD and an input at the controller) serves as the high voltage value for the width of the voltage,
- and ACM the ground from the controller (DCM at the controller)

In the parameters:
- PD002 should be set to 1 (one). PD002 is the source of operating frequency which is the RPM of the spindle in the Hz frequency units. 400Hz = 24000 RPM.
- PD003 specifies the frequency range for these terminals (10V, VI, and ACM) where 10V (voltage reference) is 400Hz and 0v is 0Hz, and VI adjusts the range from 0 and the voltage reverence (10V).
- PD070 selects the voltage range or current range (for use with the AI external VFD terminal as opposed to using the VI). You want to keep that parameter at the factory setting of 0 (zero) 0-10V.

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[575] Can you please point me in the direction of a list of VFD Parameters for this to as intended for spindle speed control? I’m using Hunyang VFD. I’ve verified outputs/relays working as intended and PWM signal is correct at the VFD, but its still pulling speed control from the onboard pot instead of PWM signal. I’ve tried every combination of parameters I can think of but no luck.

The 12V power supply has 3 terminals for AC in: N, L and earth ground. The output of the 12V power supply has 2 DC + and - terminals. Cut the connectors off of the ends of the fan and pump wires. Strip the red and black wires of both units. The fan will connect to the 12V power supply red to the + and black to the -. The pump will connect in the same way, but the white is not connected.

If you have a pump that has a grey and black wire on the large connector, the grey is the 12VDC V+ wire and the black wire goes to the V-. The extra wire does not need to be connected.

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I'm trying to hook up the Spindle Cooling Kit with 12VDC Power Supply. I have all the tubes plumbed but can't figure out how to hook up the wires. The power supply you sent only has 2 AC input and 2 DC output screws. The fan has 2 wires and the pump has three and both have a JST connector. How do I wire them in?

You will need to look for the parameter that controls the run frequency. The frequency can be controlled bu the panel, external terminals, or the RS485 TX/RX terminals (UART protocol). You will want to change that parameter so it uses the panel. If you are referring to the maximum panel dial frequency is only allowing 200-300 rpm, then look for the parameters to control the frequency.

For 200 RPM:
Hz = 200/60 = 3.33 Hz

For 300 RPM:
Hz = 300/60 = 5 Hz

Conversion to RPM:
If you ever find yourself yearning to reverse-engineer the process, the formula is as follows:

RPM = Hz × 60

Look for values that match somewhere between 3 and 5 in your frequency parameters and replace them with 400 to give you 24,000 RPM max.

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I have a 2.2kw water cooled spindle with a YL620-H VFD. The VFD uses the P#-## program format. I believe I have all the correct settings setup but when I turn the unit on, it spins at about 200-300 RPM regardless of what frequency I choose. Do you have the correct program parameters in this format for this unit? Thank you for your help. Huibert Mees

On "our" VFDs, we advise that the R connect to black (live), T connect to white (neutral) and green to E or earth. We are not professional electricians, so we also recommend that you seek the advice of a professional electrician. Some VFDs are made to work on 3 phase power and this configuration may not work with these VFDs.

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On your diagram it says to connect the power to the VFD in port L1, L2 and PE. On the VFD I have there is no L1 or L2. Which ports do I connect my input power to? There is only a P+, P-, R, S, T, U, V, W, and PE. What do I do?

Have you tried a different input pin?

Customer response:
I've tried all pins: 10, 11, 12, and 13. I get the same non-response in each case.

Recommended action
There may be a problem with the board. If you are using our parallel breakout board, we can ship you a replacement (call us), otherwise, you will need to determine the problem with the vendor of the breakout board you are using.

Additional Information:
I have tried 3 different breakout boards from 3 different providers and they all do the same thing My limit switches are microswitches wired NC with each axis wired to the BO Board. I have checked each circuit and all is OK to the BO board. each circuit has continuity at the board and when any switch is pressed the circuit breaks. Mach 3 does not recognise that the switches are even there. They are configured as active low Do you have a suggestion.

Additional Information:

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I'm having trouble getting Mach3 to recognize my limit switches. I've eliminated everything back to the breakout board. I can directly connect Input 10 to GND on the breakout board while Mach3 is in autorecognize mode and Mach3 doesn't acknowledge anything.

The license file should be called Mach1Lic.Dat, you can copy it to a Mach3 folder on another computer and it will register the program.

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You sent my my activation code which I have jealously, guarded on my Desktop till needed, now, unfortunately I cant get it to copy from Desktop to the computer and Mach3, is it possible to get advice on this or maybe a replacement that can be put on a stick then plugged into my Mach3 computer. This is how I have tried but when I open the folder it is empty. Thanks for your patience with me.

The chain should be tensioned the same on both sides, and you should have some slack and not have it too tight. The bearings should be tightly secured as well. There is another probable cause, which is the rod, where the sprocket is tighten to. Since the rod is circular the sprocket screws, cannot securely tighten the rod, which you can file where the 2 screws rest to have a flat surface or if you have a welder you can tack weld the sprocket to the rod.

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I am getting a certain amount of offset on my 2nd machining pass on my blackfoot. I am preparing to go back and make sure everything is tight, however is it possible to overtighten the chains and sprockets. Is there a general rule of thumb to increase rigidity?

BYCNC Response:
This is correct. You will need to use a method appropriate for the software you are using. Also remember that NC switches are typically wired in series, while NO switches are normally wired in parallel.

User Response:
I am using the cnc planet software for your USB board. Are the limit configurations in this software?

BYCNC Response:
Yes, Planet CNC software is compatible with the use of limit switches. Configuration information will depend on your specific application. You can view Planet CNC's information here: http://www.planet-cnc.com/files/CNCUSBController.pdf

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Limit switches for axis. The print shows that you can wire the limits either n.o. or n.c. so if this is correct I would need to tell the board in the software how to look at these limits, I'm either going to get an input or loose an input depend on how i wire it.

CamBam specifically creates the g-code (machining operations) instructions to be loaded into Mach3. Make sure in your CamBam g-code file parameters, you are using the Mach3 post processor. If you have already done this, let me know. If you are not sure how to do this, let me know.

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I am having trouble connecting the cambam program with my Mach3 to my 4X8 Blackfoot CNC machine. Where can I get help on this issue. Have had my machine since 2015 and have not been able to use it. Thank you

Each home switch needs to be on a separate input on the Mach3 USB controller. For instance, the x-home on IN1, Y-home on IN2, and Z-home on IN3. You can still wire the other switches on the same input, for instance, the IN can contain the X-home and X++ limit. The X, Y, and Z homes can still serve as the limit --.

Additional Information:
So I need 3 of 4 INs only for the home switches??? The remaining one for ++? What about E-Stop and Probe?

Additional Information:
Please have a look at the wiring diagram you show below. There are all limit switches at IN2 and all home switches at IN3. Makes sense to me.

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[575] I have two limit switches for X, Y and Z axes connected to only one input terminal. As usual, I also want to use them as home switches. But after the first axis touches its home switch, I get an emergency stop because of "activating a limit switch". Mach 3 normally knows when to use a limit switch for homing. Which detail in the depths of Mach 3 did I forget?

Currently we do not know the values of the electronic components inside our drivers, since these drivers are supplied by our manufacture and replaced by them if a manufacture defect is present.
Please email us at customerservice@buildyourcnc.com for more information on possible replacements.

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I recently had a mishap with one of my stepper drivers which resulted in a resistor being burned out. Would you be able to tell me what the resistance is for the R25 resistor inside the 6.0 amp driver?

Identify the Control Signals: First, determine which control signals from the DB25 interface card are used for spindle speed control. Typically, these are PWM (Pulse Width Modulation) signals or analog voltage signals.

VFD Configuration: Your VFD should be configured to accept the type of control signal your DB25 card provides. This involves setting parameters in the VFD that correspond to the type of input signal it will receive for speed control.

Wiring: Connect the appropriate output pins from the DB25 card to the input terminals on the VFD. This usually involves connecting the PWM or analog output to the corresponding input on the VFD. Make sure to consult the manuals for both your VFD and interface card for specific wiring details.

UCCNC Settings: Configure UCCNC to output the correct type of signal (PWM or analog) that matches your VFD's configuration. This is done through the software's spindle setup section.

Test and Adjust: Run some tests to ensure that the spindle speed is being correctly controlled by UCCNC. You might need to tweak settings in either the VFD or UCCNC for optimal performance.

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Hey ! I have purchased a VFD with matching spindle 1.5kW and control program UCCNC. And my interface card is DB25, the question is how do I connect the VFD to DB25 so that I can control the speed with UCCNC? Sincerely "cnc beginners"

I can send you a new license. All you need to do is email me at customerservice@buildyourcnc.com and state the name the license is under and I will send you another license.

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I had to reset windows on my computer and in so doing, I lost my Mach 3 program. I tried to re-download it, but the license is expired. How can I reinstall the program? License # 44y5-Version R3.043.062- Bought about May 12, 2020

BYCNC Response:
This is correct. You will need to use a method appropriate for the software you are using. Also remember that NC switches are typically wired in series, while NO switches are normally wired in parallel.

User Response:
I am using the cnc planet software for your USB board. Are the limit configurations in this software?

BYCNC Response:
Yes, Planet CNC software is compatible with the use of limit switches. Configuration information will depend on your specific application. You can view Planet CNC's information here: http://www.planet-cnc.com/files/CNCUSBController.pdf

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LIMIT SWITCHES FOR AXIS. THE PRINT SHOWS THAT YOU CAN WIRE LIMITS EITHER N.O. OR N.C. SO IF THIS IS CORRECT I WOULD NEED TO TELL BOARD IN SOFTWARE HOW LOOK AT THESE LIMITS, I'M GOING GET AN INPUT LOOSE DEPEND ON IT.