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Question #: 14543

Question: the relay on the 57CNC card turns on and the VFD starts up but it won"t turn off. Relay #1 stays on all the time. Even the Estop won't turn it off. Relay #2 doesn't work all

Current Solution

Turns out it was an electrical noise problem from the VFD. Troubleshooting showed me everything worked perfect even with the drive powered up but when the VFD started it would NOT stop from Mach3. I had run shielded cable and grounded it in the VFD but I had an intermediate break in the shield wire at my Master Control Relay (MCR) that is activated by an Estop on my control panel.

This confirms the importance of shielded cable and making sure that the shield is contiguous.

My guess is the wire(s) going to the dry contacts on the relay carried enough energy to fire the base of the transistor supplying coil voltage to relay #1. Or there might have just been enough induced voltage to the relay to fire the relay coil.
I've fought similar VFD noise issues for 25 years and it still amazes me how pesky it can be. It's impossible to maintain any separation of signal and motor leads in the tiny space in the VFD.

Additional Information:

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Other Possible Solutions to this Question

  • The relay doesn't have a A+ B - it has signal in god. 5v. / 0 S P. This has to go to my USB motion card wiring shows v+ goes to top of coil no number and comes out the bottom to #2 the relay I got from you is not that simple

    The relay is only used for devices like routers, spindles, coolant, mist, etc. The relay works like an automatic switch and will allow current to pass when the relay is engaged.

    Click the link to add information to this solution:
    The relay doesn't have a A+ B - it has signal in god. 5v. / 0 S P. This has to go to my USB motion card wiring shows v+ goes to top of coil no number and comes out the bottom to #2 the relay I got from you is not that simple

  • X AXIS STEPPER MOTOR STALLS AND SHUTTERS WHEN COMING FROM A STAND STILL WON'T MOVE WITHOUT PUSH BY HAND. I TOOK THE CHAINS OFF SPUN FINE WITH OUT LOAD. HAVE CHAIN HOOKED UP CAN MACHINE BACK FORTH HAND, NO HANG UPS OR ANYTHING, BUT TRY TO IT DOESN'T JUST SPINS OUT. ANY SUGGESTIONS?

    If your axis shutters and will not move unless moved by another force, that sounds like your acceleration is set too high. Lower the acceleration until it works well, then lower it a bit more to have a margin of safety.

    IF that didn't work, try swapping the X and Y drivers. That way you will pinpoint if the issue is the driver. If the proplem persists, then there may be an issue with the motor itself.

    The X and Y drivers can be easily swapped by swapping only the motor wires.

    - Remove the x-axis motor wires from the X driver.
    - Remove the Y motor wires from the Y driver.
    - Insert the X motor wires into the Y driver.
    - Insert the Y motor wires into the X driver.

    Now the Y-axis will move the gantry. Test the Gantry movement by moving the Y axis using the up and down arrow keys (mach3).

    Click the link to add information to this solution:
    X AXIS STEPPER MOTOR STALLS AND SHUTTERS WHEN COMING FROM A STAND STILL WON'T MOVE WITHOUT PUSH BY HAND. I TOOK THE CHAINS OFF SPUN FINE WITH OUT LOAD. HAVE CHAIN HOOKED UP CAN MACHINE BACK FORTH HAND, NO HANG UPS OR ANYTHING, BUT TRY TO IT DOESN'T JUST SPINS OUT. ANY SUGGESTIONS?

  • I HAVE YOUR MACH3 USB BOB, DO YOU GUYS SELL A TORCH CONTROL RELAY CAN WIRE UP TO TURN MY PLASMA ON AND OFF HOW WOULD WIFE THAT TOO THIS BOB?

    We do have a relay board that words like a standard relay.

    Here is the URL of the relay board that we offer:

    https://www.buildyourcnc.com/item/electronicsAndMotors-breakout-Relays-relay-board-250V-12A-5V

    Click the link to add information to this solution:
    I HAVE YOUR MACH3 USB BOB, DO YOU GUYS SELL A TORCH CONTROL RELAY CAN WIRE UP TO TURN MY PLASMA ON AND OFF HOW WOULD WIFE THAT TOO THIS BOB?

  • I AM HAVING TROUBLES FINDING THE PD PROGRAM, HAVE BUT IT DOESN'T SHOW EVERYTHING NEED TO PROGRAM MY VFD. ANY HELP WILL BE APPRECIATED...

    When you power up your VFD, you can go into the programming mode by pressing the program button. You can press the up and down arrows to move through the parameters. Press the set button to go into the parameter to see the value of that parameter. If you want to make changes to that parameter, change the value with the up and down arrows until the desired value is shown, and press the set button to accept the changes.

    Click the link to add information to this solution:
    I AM HAVING TROUBLES FINDING THE PD PROGRAM, HAVE BUT IT DOESN'T SHOW EVERYTHING NEED TO PROGRAM MY VFD. ANY HELP WILL BE APPRECIATED...

  • [77] I am having troubles finding the PD program, I have the Pd but it doesn't show everything I need to program my VFD. Any help will be appreciated...

    When you power up your VFD, you can go into the programming mode by pressing the program button. You can press the up and down arrows to move through the parameters. Press the set button to go into the parameter to see the value of that parameter. If you want to make changes to that parameter, change the value with the up and down arrows until the desired value is shown, and press the set button to accept the changes.

    Click the link to add information to this solution:
    [77] I am having troubles finding the PD program, I have the Pd but it doesn't show everything I need to program my VFD. Any help will be appreciated...

  • I AM PUTTING TOGETHER THE BLACKFOOT AND USING A PORTER CABLE ROUTER. CONFUSED ON HOW TO RELAY ROUTETR WITH USB BOARD. IS THERE ANOTHER SWITCH THAT GOES BETWEEN BOARD ROUTER SO PLANET CNC CAN TURN PERHAPS VACUUM OFF?

    We are currently working on a relay board that will connect to USB breakout board, and the router/spindle for both the on/off function. Unfortunately we still do not have it completed or ready to be placed on our website, but it is in the final stages of testing. Please check back regularly for updated stock!

    Here is a link to a tutorial for a DIY relay circuit:



    There is no vacuum control on the Planet-CNC program, however you could use the same concept of the router/spindle on/off using the relay circuit. Although you will have to use either the flood or mist function for the vacuum.

    Click the link to add information to this solution:
    I AM PUTTING TOGETHER THE BLACKFOOT AND USING A PORTER CABLE ROUTER. CONFUSED ON HOW TO RELAY ROUTETR WITH USB BOARD. IS THERE ANOTHER SWITCH THAT GOES BETWEEN BOARD ROUTER SO PLANET CNC CAN TURN PERHAPS VACUUM OFF?

  • I HAVE FOLLOWED YOUR YOUTUBE VIDEO ON SETTING UP THE POKEYS 57CNC BOARD BUT WHEN OPEN MACH 4 GET A ERROR MESSAGE CONNECTION IS TO SLOW

    I have not come across this problem, but there may be USB, or firmware issues that you are experiencing. I would recommend going on the polabs website and using their support center (https://support.poscope.com/)and posing that question to them. Also, have you tried the ethernet port as an alternative to see if that helps?

    Here is the response from an LLM:

    Check USB Cable and Port: Start with the basics. Sometimes this error is due to a poor USB connection. Ensure you're using a high-quality, shielded USB cable and that it's plugged into a USB port directly on your computer, not through a hub. If possible, try a different USB port or a different cable to rule out any issues there.

    Update Firmware and Software: Ensure that both your PoKeys57CNC firmware and the Mach4 software are up to date. Firmware updates for your PoKeys board might include optimizations or fixes that address connectivity issues.

    USB Polling Rate: This error can also arise from the USB polling rate setting in the PoKeys configuration software. It might be set too high for your system's ability to handle it. Try lowering the polling rate and see if that resolves the error.

    Computer Performance: Check your computer’s performance. If it’s running several heavy applications simultaneously, it might not be able to process signals from the PoKeys board fast enough. Try closing unnecessary applications or consider using a dedicated machine if your current setup is too taxed.

    Mach 4 and PoKeys Plugin Configuration: Dive into the Mach 4 plugin configuration for PoKeys. Ensure that all settings are correctly configured as per the manual. Incorrect settings might lead to communication bottlenecks.

    Connection Quality and Interference: Consider any potential interference sources near your CNC setup or computer. Electromagnetic interference from large motors, other electronics, or long cable runs can affect communication quality. Try rearranging your setup to minimize interference.

    Consult Documentation and Support: If the issue persists, consult the detailed documentation provided by PoKeys or reach out to their customer support. They can offer more specific advice based on the latest product updates or known issues.

    Click the link to add information to this solution:
    I HAVE FOLLOWED YOUR YOUTUBE VIDEO ON SETTING UP THE POKEYS 57CNC BOARD BUT WHEN OPEN MACH 4 GET A ERROR MESSAGE CONNECTION IS TO SLOW

  • I have a Glack CNC motor and VFD and confused if a ground from the Pokeys57 needs to be ran to the VFD to turn on and off the motor and to also control the speed. I can provide a picture

    No, ground from the pokeys57cnc controller should not be required. Your VFD should have two terminals that will turn on and off the spindle (forward, or stop). These two terminals simply need to be connected to each other to invoke that operation. In the VFD manual, you will see a schematic with a normally open switch symbol between these two terminals. The onboard relay on the pokeys57CNC would be a great feature of the board to connect to the two terminals of the VFD.

    Click the link to add information to this solution:
    I have a Glack CNC motor and VFD and confused if a ground from the Pokeys57 needs to be ran to the VFD to turn on and off the motor and to also control the speed. I can provide a picture

  • WHAT IS THE MOST EASY WAY TO HOOK UP MILL IN THAT AUTOMATICALLY STARTS WHEN CYCLE STARTS, AND STOPS GCODE THROUGH?

    Does your breakout board (interface) have a relay? If so, you can connect one of the router/spindle's ac lines through the relay. The M3, M4 and M5 codes are used to control the router/spindle. Typically, the M codes are automatically added to the g-code regardless if you configure this in your CAM software. If you have the breakout board from buildyourcnc, you can go to the product page for the breakout board and the relay connection diagram and narrative is in the instructions on that page.

    Click the link to add information to this solution:
    WHAT IS THE MOST EASY WAY TO HOOK UP MILL IN THAT AUTOMATICALLY STARTS WHEN CYCLE STARTS, AND STOPS GCODE THROUGH?

  • Mach 4 is not triggering PWM pin 17 on Pokeys57CNC. I am able to get it to work through the Pokeys app but not Mach 4. I've made all of the setting changes prescribed in the manual.

    I will check with the developer of the board and show the response on this FAQ.

    Additional Information:
    The response from the developer:
    Are you referring to using Pin 17 for the spindle speed control? Make sure that you set the desired spindle speed in Mach4 by executing S1000 in the MDI or the G-code.

    Click the link to add information to this solution:
    Mach 4 is not triggering PWM pin 17 on Pokeys57CNC. I am able to get it to work through the Pokeys app but not Mach 4. I've made all of the setting changes prescribed in the manual.

  • IS IT OK TO LEAVE THE VACUUM PRESSURE CONTROLLER PLUGGED IN ALL TIME WHEN PUMP SWITCHED OFF?

    I don't see anything in the datasheet for the relay that indicates an overheat condition. While the relay is engaged, the power consumption is 400 mW and I don't believe this is enough to raise the temperature faster than the heat dissipation from the metal on the leads through convection or radiation outside of the rated temperature working ranges providing that you maintain an ambient temperature range within -40°C to 85°C (with no icing or condensation).

    http://www.omron.com/ecb/products/pdf/en-g2rl.pdf

    Click the link to add information to this solution:
    IS IT OK TO LEAVE THE VACUUM PRESSURE CONTROLLER PLUGGED IN ALL TIME WHEN PUMP SWITCHED OFF?

  • THE LEAD SCREW IS VERY HARD TO TURN. BACKLASH BUSHING SEEMS BE TOO TIGHT AND BINDING ON SCREW. DO IT NEED LUBRICATION OR DID DAMAGE NUT WHEN INSERTING SCREW?

    Yes, you can use lubrication, like 3-in-1 oil to make it a bit easier. You will need to run it up and down to break it in.

    Additional Information:

    Click the link to add information to this solution:
    THE LEAD SCREW IS VERY HARD TO TURN. BACKLASH BUSHING SEEMS BE TOO TIGHT AND BINDING ON SCREW. DO IT NEED LUBRICATION OR DID DAMAGE NUT WHEN INSERTING SCREW?

  • I BOUGHT YOUR BOOK AND WAS HOPEING IT HAD PLANS OR DIMENTIONS ON HOW TO BUILD A CNC HOLD 4X8 SHEET OF PLY. WILL THE IN SCALE UP?

    BYCNC Response:
    The book build was intended to be 20 inches x 40 inches. Larger machines were designed after the book build was introduced so customers would have the option to go bigger than what the book offered. Check out our larger machines on the website as the machines sizes range from 1 foot x 3 feet all the way up to 6 feet x 12+ feet.

    User Response:
    I'm not wanting to spend $3,000+ on a machine, I want to build one that will do a 4x8 sheet of wood. Will the plans in the book scale up?

    BYCNC Response:
    It is possible to scale the book build up, but the rigidity of the gantry would be questionable at that span, even if the height of the gantry structure were to be increased. The gantry design would need to be modified to become a box shape rather than a flat configuration. The kits on the site were design for those wanting a larger machine.

    Click the link to add information to this solution:
    I BOUGHT YOUR BOOK AND WAS HOPEING IT HAD PLANS OR DIMENTIONS ON HOW TO BUILD A CNC HOLD 4X8 SHEET OF PLY. WILL THE IN SCALE UP?

  • Will your 2.5 KW spindle work with my Hitachi WJ200-022SF VFD and does it have a thermal couple temp output?

    From reading on the Hitachi WJ200-022SF VFD, it seems as it will work just fine with this VFD. However since we have not tried this cross match, I would carefully take each connection and setting into great consideration and detail on both the Hitachi recommendations for setup, as well as our spindles recommended setup.
    Our spindles do not have a thermal couple temperature output.

    Additional Information:



    Additional Information:



    Additional Information:

    Click the link to add information to this solution:
    Will your 2.5 KW spindle work with my Hitachi WJ200-022SF VFD and does it have a thermal couple temp output?

  • ALL OF A SUDDEN THE REDLEAF COMPUTER WONT TURN ON...THE CNC PART WORKS FINE, BUT MAIN ???

    For our redLeaf CNC computer system, if the computer system section is none response check if you have power coming in from your wall outlet. If a spare PSU (power supply) is available, try replacing and running with the replaced PSU.


    Additional Information:
    Other considerations will included, RAM module (memory stick), and motherboard. Please verify you have power going to your motherboard first, by noticing if any LED's are turn on. If not Check PSU first.

    Additional Information:
    Yes there is power to the unit. There is a small green light lit on the motherboard and another green light lit near the usb ports. Usually when I press the yellow reset button, the computer starts, but now nothing happens...

    Click the link to add information to this solution:
    ALL OF A SUDDEN THE REDLEAF COMPUTER WONT TURN ON...THE CNC PART WORKS FINE, BUT MAIN ???

  • If I buy the Combo #1 with hardware, plans for $255.00 and get all the required parts, will i be able to use with Autodesk 123D?

    Yes, you can use the Autodesk123D CNC Utility found here: http://www.123dapp.com/aboutcnc

    This utility will work with any standard CNC machine. Our machines use standard electronics and you choose the software that controls the CNC machine.

    Click the link to add information to this solution:
    If I buy the Combo #1 with hardware, plans for $255.00 and get all the required parts, will i be able to use with Autodesk 123D?

  • ON THE BOB...EVERYTHING TESTS OK BOB EXCEPT X-DIRECTION OUT. IT'S VOLTAGE IS SLIGHTLY DIFFERENT THAN Y AND Z (5.00 INSTEAD OF 5.03. TESTED X DIRECTION ALL THREE DRIVERS. IN EACH CASE THERE GOING INTO DRIVER BUT NOT OUT IT.

    The electronics can be tricky sometimes, especially if more than one change is made for a test. You can move the x-dir wire to another pin and set it in the software configuration. If it works, then only that pin is bad.

    Click the link to add information to this solution:
    ON THE BOB...EVERYTHING TESTS OK BOB EXCEPT X-DIRECTION OUT. IT'S VOLTAGE IS SLIGHTLY DIFFERENT THAN Y AND Z (5.00 INSTEAD OF 5.03. TESTED X DIRECTION ALL THREE DRIVERS. IN EACH CASE THERE GOING INTO DRIVER BUT NOT OUT IT.

  • How to display RPM instead of frequency on the VFD? I have the 2.2kv 110 volt spindle and inverter.

    There is a button on the front of the VFD that will cycle through RPM, Freq, and a few other readings. If there is a >> button on your VFD, that will work. If there is a mode button on your VFD, that should works as well.

    Additional Information:
    There is a >> disc button but it does not cycle through the display modes.

    Additional Information:
    Is there a parameter setting to make this button work to cycle thru the display modes?

    Additional Information:
    setting the starting rpm

    Additional Information:
    the vfd will not start the motor

    Additional Information:
    Any progress on this? I have the same issue.

    Additional Information:
    What model is your VFD?

    Additional Information:
    Mine is a YL620-G-5.5Kw

    Additional Information:
    That model will not be able to show RPM. You will be able to show the frequency, which can be used to determine the RPM. RPM equals the Frequency x 60.

    Additional Information:
    There is an Icon for RPM at the top of the display I cannot cycle through the different options to see the RPM

    Additional Information:
    At the top of my control panel is has 6 different lights which indicate what your seeing. in order from left to right they are COM, ALM, DISP, RUN, Hz, RPM I have seen the ALM light up on initial set up but that was fixes with a parameter change. The run light shows up when i turn the spindle on and and it is running. I am however not able to get any of the other lights to show or to get the RPMs to display

    Additional Information:
    If you do see an RPM light on the display, that panel sticker may be a sticker used for many types of VFDs and the RPM is not used. There is parameter: P00.24 which allows you to pick what to display. The choices a
    re:
    0: Display current target frequency. This will display your knobs, potentiometer, setting, not the actual spindle frequency.
    1: Display electric machinery run frequency. This will display the actual frequency that the VFD is currently sending to the spindle.
    2: Display electric machinery run current: this will display the current the spindle is currently drawing.
    3: Display input AC voltage. Self explanatory.
    4: Display mother line voltage. This will display the actual voltage at the input.
    5: Display output voltage. This will display the voltage at the UVW terminals for the spindle.
    6: Display speed paragraph number SPx. I believe this displays which frequency is being selected (P07.00 to P07.07, or 1 to 8 respectively).
    7: Display inverter temperature. This is the temp of the VFD, self explanatory.
    8: Display input signal X1-X3/output signal. This simply shows the inputs/outputs associated with the external terminals.
    9: Display user variable. This one I have not delved into, so it may be something to look into.
    10: Display user count value. Same, this one could be useful.
    11: Display temporary debugging variable. Haven't tried this one, so I can't inform of any useful information but it won't pertain to this subject anyway.
    12: Display automatic multisegment run step and time. I haven't delved into this one either, but it won't show RPM.

    Click the link to add information to this solution:
    How to display RPM instead of frequency on the VFD? I have the 2.2kv 110 volt spindle and inverter.

  • What gauge wire between the VFD and the 2.2K spindle? The spindle connection posts are very tiny, equivalent to 18 gauge, but that seems too small. What do you use?

    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:


    Additional Information:



    Additional Information:



    Additional Information:

    Click the link to add information to this solution:
    What gauge wire between the VFD and the 2.2K spindle? The spindle connection posts are very tiny, equivalent to 18 gauge, but that seems too small. What do you use?

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