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Question #: 6869

Question: My Nema 24 motors make high pitched alarm sound when changing directions quickly - what could be the cause? Red LED is lit on Microstep Driver CW230 but everything seems to run fine - is this a problem?

Current Solution

Stepper motors are known to make different type of noises when in motion. So there should be no issues in regards to accuracy with the steppers. You also might be able to lower the noise that comes from the motors, by adjusting the acceleration and velocity of the motors. This usually tends to either make different noises or lowers the pitch of the noises.

Cool video(personal opinion, does not relate to BYCNC):

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Other Possible Solutions to this Question

  • Asus Laptop win11 running Mach3USB and rnrmotion board. Sporadic event. Everything starts and looks correct. Readouts show motor movement with arrow keys, however, motors don't move. Came back 1 day later to resolve and everything worked fine. this has happened 3 time in the last year. I am having this problem right now. What should I do?

    In the scenario where the motors are not moving, do you see the red LED on the Mach3 USB controller blinking fast?

    - If not, then there is a communication issue between the computer and the Mach3 USB controller.

    - If you do see the blinking, then there is an issue between the Mach3 USB controller and the drivers, or a power supply issue (the power supply that is connected to the drivers that power the motors).

    Additional Information:
    20

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    Asus Laptop win11 running Mach3USB and rnrmotion board. Sporadic event. Everything starts and looks correct. Readouts show motor movement with arrow keys, however, motors don't move. Came back 1 day later to resolve and everything worked fine. this has happened 3 time in the last year. I am having this problem right now. What should I do?

  • My stepper motors stopped working all of a sudden. Mach 3 is running fine, just no signals getting to the motors. The lights on the motor drivers began blinking erratically when this started. Any advice where a problem like this can come from would be greatly appreciated.

    The drivers have quite a bit of protection, so you probably won't ruin anything. You motors are jumping and that is just the motors engaging from getting power from the power supply.

    There could be many reasons your motors don't turn. Consider these troubleshooting tips:

    - If you are using our parallel breakout board, make sure that the step pins are set for active low (config -> Ports and Pins -> Motor Outputs -> the steps pins should be enabled and set active low)

    - The parallel breakout board is powered (connect the USB to the computer using a USB cable)

    - In Mach3, make sure you have jog enabled (a little green button at thelower middle of the page in the program run screen).

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    Additional Information:
    DS26

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    My stepper motors stopped working all of a sudden. Mach 3 is running fine, just no signals getting to the motors. The lights on the motor drivers began blinking erratically when this started. Any advice where a problem like this can come from would be greatly appreciated.

  • I have an engine NEMA 34 from Y axis on my green bull that do not response, I already check connections and everything seems to be OK, how can I check that the motor it's working properly or not?

    If one or more motor is not responding, please follow the troubleshooting directions below:

    For parallel Bob only! Make sure both the parallel and USB are connected.

    Re-check wiring, and connections for continuity (no breaks in the wires) and check for correct wiring locations from driver to BoB.
    Check dip switch settings on the driver.
    Check components, by swapping the motors (ex. y-axis motor to z or x-axis driver and z or x-axis motor to y-axis driver) to check if motor functions on another driver.
    Depending on software check step low active (mach 3) or invert pulse (planet-cnc) for the axis which is not responding.
    Mach 3 - config/port & pins/motor outputs / Planet-CNC - file/settings/axes

    Click the link to add information to this solution:
    I have an engine NEMA 34 from Y axis on my green bull that do not response, I already check connections and everything seems to be OK, how can I check that the motor it's working properly or not?

  • there's a red light active on the inside the corner of my cw230 stepper driver, but there's nothing that says what it's for. is that bad? on the cw8060 driver there's two LED's and the red one says alert. are the red light's on both drivers supposed to mean the same thing?

    For the 3.0A driver (CW230), the red led means that it is functioning correctly. It is confusing that they are made this way, but if the red led is lit then everything is fine.

    As the 6.0A driver (CW8060) the green led means that it is functioning correctly, and the red led when there is a error.

    Click the link to add information to this solution:
    there's a red light active on the inside the corner of my cw230 stepper driver, but there's nothing that says what it's for. is that bad? on the cw8060 driver there's two LED's and the red one says alert. are the red light's on both drivers supposed to mean the same thing?

  • I have a KL-4030 stepper motor driver that I only have about an hour use on it but seems to be bad already. Has anyone out there had the same problem?

    The KL-4030 is a Keling 3.0 amp stepper motor driver. These are generally pretty robust drivers. You mentioned in the question that it worked for one hour. This sounds like it could be a contact issue with the wiring in the terminals. I would recommend that you check all of the connections. The terminals that are used in these drivers have terminals that are easily used incorrectly.

    Make sure to open the terminal all the way using a small screw driver. Then insert the exposed wire into the opening and re-tighten the terminal. Make sure of a good connection by tugging on the wires.

    Also, check kthe digital wires that connect from the driver to the control board.

    Click the link to add information to this solution:
    I have a KL-4030 stepper motor driver that I only have about an hour use on it but seems to be bad already. Has anyone out there had the same problem?

  • My Z-axis seems to be reversed on a fully assembled machine... I've tried reversing it in the config settings on Mach 3, but to no avail. What do I need to do? IS this a wiring issue that was not done correctly at the factory?

    If your Z axis is moving in the opposite direction, go into Mach3, click on config, ports & pins, then click on the motor outputs tab. You will see the axes labeled on the left and the parameters labeled on the top of this dialog box. Toggle the dir low active for the z-axis.

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    What if I'm having the same issue on a different axis?

    Additional Information:
    You can follow the same procedure as with the z-axis. When you get to the motors outputs tab, toggle the dir low active checkbox for the axis that you would like to change.

    If you are using another control program, let me know and I will add the recommended action here.

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    Girbl

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    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

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    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

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    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

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    Click the link to add information to this solution:
    My Z-axis seems to be reversed on a fully assembled machine... I've tried reversing it in the config settings on Mach 3, but to no avail. What do I need to do? IS this a wiring issue that was not done correctly at the factory?

  • The LED light on one of my Microstep Driver Blinks while the other 2 remain solidly lit. What should i look for?

    Have you tried to lower the amp setting on the driver that has the blinking LED.

    Click the link to add information to this solution:
    The LED light on one of my Microstep Driver Blinks while the other 2 remain solidly lit. What should i look for?

  • What comes with the WhiteAnt base kit, the web page Price options mentions that everything except Electronics, but the description section that the kit includes electronics, what about the motors
  • hello there, i am using servo motor for my X and Y Axis but i dont know how to calculate steps/mm for that, the lead screw i am using is have pitch of .5 mm. please helpme on this i have done everything only this point is pending.

    The formula for finding the steps per mm is found in the units itself. First, you mentioned that the motor is a servo. This needs to be clarified as a servo is different than a stepper motor. Some servos behave similar to a stepper motor, so I will continue with this in mind.

    The formula is (steps/mm):

    You need to find the steps. The stepper motor has a natural number of steps per a full revolution. This is typically 200 steps per revolution.

    The driver for the stepper motor allows you to increase the number of steps per revolution by adding a specified number of steps between each step. For instance, if you set the driver to 1/4 microstepping, then instead of having 200 steps per revolution, you would have 200 x 4 = 800 steps per revolution.

    So now we have the first part of the formula:

    Steps / mm = (200 x 4) / mm

    Lets determine the mm side of the formula:

    You mention that the pitch is 0.5 mm. Check to insure that the lead is also 0.5 mm. This could be a multiple start lead screw where the pitch is different than the turns per mm. If in this case, that the 0.5 mm is the travel for one full revolution, then you can simply plug this into the formula as:

    mm = .5 mm

    Otherwise, determine how fat the travel is for one complete revolution.

    Therefor, with what we know and the driver is set at 1/4 microstepping and the stepper motor has a natural step count per revolution at 200:

    steps / mm = (200 steps x 4) / 0.5 mm = 800 steps / 0.5 mm = 1600 steps / mm

    If your travel for one revolution is not 0.5 mm, then plug in your travel distance instead.



    Additional Information:
    i know about steps/mm calculation for stepper motor, because i am using servo motor that why i asked about that. please tell for servo motor.

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    because its my first time with servo motor i have no idea about calculation of parameter with servo.

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    Have you attempted to contact the manufacturer or seller of the servo? We typically respond to customers of our products on this customer service area, unless we have extensive knowledge of the subject and can answer the question efficiently.

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    Click the link to add information to this solution:
    hello there, i am using servo motor for my X and Y Axis but i dont know how to calculate steps/mm for that, the lead screw i am using is have pitch of .5 mm. please helpme on this i have done everything only this point is pending.

  • I have your Nema 24 electronics kit and am having problems with the Z axis dropping over time. I am using a PC 8902 motor. Any ideas on what the problem is? What should be the motor tuning values in Mach3? Thanks

    Make sure all your bolts/screws are tighten correctly and if using a lead screw make sure your anti-backlash nut is not offset. Now a default setting will be 10101100 for your driver dip switch settings and in motor tuning (mach3) 1600 steps per, 400.02 velocity, 4 in acceleration. now the acceleration and velocity can be adjusted to move your machine faster, but if set to high they could stall. Make sure you have the correct wiring from your motor to your driver (https://www.buildyourcnc.com/Documents/PN.SM60HT86-2008BF-U%20(inhouse%20PN.60BYGH303-13)%20(1).pdf).

    Click the link to add information to this solution:
    I have your Nema 24 electronics kit and am having problems with the Z axis dropping over time. I am using a PC 8902 motor. Any ideas on what the problem is? What should be the motor tuning values in Mach3? Thanks

  • Under what conditions should the LED on the 3d printer driver be lit when the driver is connected to the MB?

    The driver's LED serves to indicate a fault condition. The driver chip has built in protection for overheating and over current. If the LED is on, most likely, the driver will stop until the condition is resolved. If you see the LED on, adjust the vref trimmer. First, connect a multimeter to the pads just next to the trimmer potentiometer and adjust until the voltage is lowered a bit. Alternatively, even though the PCB contains a vast amount of thermal vias and a relatively large ground plane connected to the belly of the driver, there still may be a need to cool the driver chip using a small heat sink. Do this only if you are not satisfied with the performance of the motor at the torque require.

    Click the link to add information to this solution:
    Under what conditions should the LED on the 3d printer driver be lit when the driver is connected to the MB?

  • I bought Nema 24 motors and driver package with usb board. What do i need to have more speed? Cant even jog past 25 ipm without the motor stalling (not having enough torgue)

    We recommend checking the dip switch settings on your drivers, having the correct microstepping/amp settings along with the steps/unit will help the motors run as effective as possible.
    This is a default parameter that we use while we test our motors:
    Driver dip switch settings will be at a 1/16 microstepping and 2.7amp (11001100) for x/y-axis and the z-axis will be at 1/4 microstepping and 2.7amp (10101100).

    In planet-cnc with increasing the motor speed, you will have to modify the settings in planet-cnc (File/settings/setup) you will modify the initial speed, maximum speed, and the acceleration.
    X/Y-axis step/unit: 1422.22 initial speed:500 maximum speed:750 acceleration:25
    Z-axis step/unit: 1600 initial speed:100 maximum speed:300 acceleration:25
    The initial speed and maximum speed will have to be roughly tested and adjusted per application.
    Make sure to adjust the JOG slide bard underneath the axis controls on screen to about 750, to compensate for your x/y-axis adjustments. If left alone the speed will max out at the default setting.

    Here is a video tutorial to calculate the steps required depending on your mechanical linear motion components. (

    )

    Click the link to add information to this solution:
    I bought Nema 24 motors and driver package with usb board. What do i need to have more speed? Cant even jog past 25 ipm without the motor stalling (not having enough torgue)

  • I LIVE IN ITALY AND WISH TO KNOW MORE ABOUT RADIATIONS CAUSED FROM MOBILE TELEPHONES. TELECOM WOULD LIKE PLACE A WIRE-ANTENNA THE HEARTH OF MY TOWN, I'M AFRAID IT. WHICH KIND RISK HEALTH COULD IT CAUSE? THANK YOU IF WILL SEND ME SOME INFORMATION SCIENTIFIC ARTICLES THIS PROBLEM!

    See the question on our "Ask the Expert" question-and-answer list on cellular towers under nonionizing radiation for a discussion of RF safety issues associated with cellular radios. The technology underlying cellular radios and base station antennas is similar around the world, but there are differences in systems design and RF safety limits in different countries. For a summary of cellular radio RF safety issues with attention to international differences see the excellent Web page, Cellular Phone Antennas (Base Stations) and Human Health, by John E. Molder, Ph.D., from the Medical College of Wisconsin. Gary H. Zeman Sc.D., CHP

    Click the link to add information to this solution:
    I LIVE IN ITALY AND WISH TO KNOW MORE ABOUT RADIATIONS CAUSED FROM MOBILE TELEPHONES. TELECOM WOULD LIKE PLACE A WIRE-ANTENNA THE HEARTH OF MY TOWN, I'M AFRAID IT. WHICH KIND RISK HEALTH COULD IT CAUSE? THANK YOU IF WILL SEND ME SOME INFORMATION SCIENTIFIC ARTICLES THIS PROBLEM!

  • I have NEMA 34 motors for a GreenBull 6x12. After 2 weeks of use, my Y axis motor has developed play in the front but not rear of the motor. Is this a motor defect or has something come loose somewhere? Thanks,

    If there is play within the motor itself, then that motor may be defective. Call us to provide us more detail on this issue.

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    Click the link to add information to this solution:
    I have NEMA 34 motors for a GreenBull 6x12. After 2 weeks of use, my Y axis motor has developed play in the front but not rear of the motor. Is this a motor defect or has something come loose somewhere? Thanks,

  • I'm using Mach3 and I tuning the motors. As is they all seem to jog nicely, smooth and quiet. However when I make moves using gcode they bind and don't move or jerk violently when they do move. What step did I miss?

    Your g-code probably has the feed rate too high. You set the velocity and acceleration in your motor tuning, but g-code may be able to override these values.

    Try lowering the feed rate in either your CAM program or in the g-code manually. The feedrate code has an “F” then a number after representing the velocity.

    Click the link to add information to this solution:
    I'm using Mach3 and I tuning the motors. As is they all seem to jog nicely, smooth and quiet. However when I make moves using gcode they bind and don't move or jerk violently when they do move. What step did I miss?

  • I was in the process of aligning mirrors for our vertical XL and suddenly the laser does not fire anymore, there is an arcing sound and a light near the Anode (positive) connector of the tube on the very inside. Do you think the laser tube would go bad so quickly? how could we avoid this?

    Can you check if there are cracks in the inner glass tube? Also, check to see if there is water between the inner glass tube and the outer glass tube. That will give you an indication of cracking in the inner glass tube.

    Click the link to add information to this solution:
    I was in the process of aligning mirrors for our vertical XL and suddenly the laser does not fire anymore, there is an arcing sound and a light near the Anode (positive) connector of the tube on the very inside. Do you think the laser tube would go bad so quickly? how could we avoid this?

  • [54] I purchased a kit a few years ago with a 36v 8.8A driver and a nema 23 425oz-in motors. I’ve hooked the motors as suggested but they are not holding anything like 425 torque. Please advise.

    Make sure to connect the motor using the bipolar parallel schema as per the datasheet.

    Additional Information:
    I also purchased these same motors(3a drive, not the 8.8) nearly a decade ago, they are now being installed on their third life as a CNC wood lathe with C axis spindle control. I never had any perceivable problems wiring them to the diagram, but in recent R+D I discovered a strange thing. I use LinuxCNC, and while going through setup and trying to tweak in the settings for the motors/drives, I found a motor wire identification guide for steppers on the LinuxCNC wiki that gives a different result for which wires go to which terminals on the drives. I have not tested both wiring schemes since I am in the middle of the build and have not yet reached that point. This could be one factor, if the wiring diagram is not actually correct. I always used bipolar parallel. As stated above, I never detected any problems in thousands of hours of run time over two separate machine configs. The other thing I learned recently is that microstepping actually reduces STEP torque by significant amounts, though I can't find any info about its effect on HOLDING torque, if any. 1/16 microstep reduces STEP torque to ~10% of motor rated torque, which can have a significant effect on heavy cuts/fast feedrate moves. I have definitely overdriven my axes by not programming conservatively enough, I do a lot of aluminum routing and hoggy work on hardwoods. There are many other factors in machine builds(resonance, mechanics, etc) that can eat away at the motors ACTUAL real life torque capability vs. its nominal rating. Lot of good info on stepper principles on the LinuxCNC website. My current build has actual ballscrews rather than leadscrews, It will be interesting to see what the performance differences are compared to my other builds. Keep the chips flying!

    Click the link to add information to this solution:
    [54] I purchased a kit a few years ago with a 36v 8.8A driver and a nema 23 425oz-in motors. I’ve hooked the motors as suggested but they are not holding anything like 425 torque. Please advise.

  • My X-axis on the Blacktoe cannot run above ~40 ipm. I've checked all connections,tensions, sprocket locks, etc. All is fine. Can the 425 OZ stepping motor be replaced with a bigger motor, or could a second 425 OZ stepper be added to increase torque?

    it is possible to install 2 motors on a single axis but you will require another driver and motor, but wire it directly to the same pins on your breakout board. Also the orientation of your motor since it is opposite side of the original so getting it to move accordingly to the original motor it will need to be orientated correctly. The slight shift could be the cause of the rod not being completely flat where the set screws are suppose to tighten the sprocket to the rod, so sanding it to a flatter surface might fix the shift in directions.
    Currently do not have a kit or schematic available.

    Click the link to add information to this solution:
    My X-axis on the Blacktoe cannot run above ~40 ipm. I've checked all connections,tensions, sprocket locks, etc. All is fine. Can the 425 OZ stepping motor be replaced with a bigger motor, or could a second 425 OZ stepper be added to increase torque?

  • I'm going to use 2 stepper motors for my X-axis. Can I use the same connections on the B/O board to do this knowing I will need 2 separate driver boards.

    Yes, absolutely. If you need two motors for a single axis, you will want to use the same terminals for pulse and direction from the breakout board.

    More specifically, you will wire the step/pulse pin to both drivers, and the direction pin to both drivers. If the motors need to turn in different directions, simply swap the A and B coil connections on one of the motors.

    Additional Information:
    i have checked the cnc machine for any flex and there is none but i still cannot cut circles they end up square.have checked calibration and it is correct but if i run at 4000 mm feed all comes out correct but if i change feed to say 2000 mm it makes the part small, like in tiny.

    Click the link to add information to this solution:
    I'm going to use 2 stepper motors for my X-axis. Can I use the same connections on the B/O board to do this knowing I will need 2 separate driver boards.

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