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Question #: 13236

Question: What determines how fast the stepping motors will spin?

Current Solution

The amount of voltage that is used to power the motors will generally determine the top RPM of the stepping motors. As you increase the voltage, the time constant is reduced in the process of current flowing through the coils of the motor. The faster the current can be drawn through the coils, the faster the motor will spin.

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Other Possible Solutions to this Question

  • CAN THERE BE CLOSED LOOP CONTROL WITH STEPPING MOTORS?

    I haven't delved into using encoders with stepping motors too much. From my research, you need to have a controller that can provide the closed loop control, rather than software handling that process. I have also found from my research that using encoders on stepping motors is generally used to stop the machine in the case that the motor failed to achieve the commanded position for some reason and gives the user the chance to correct and continue with the job.

    If you want proper closed loop control, it may be best to go with servos and servo controller that provide the closed loop control within the real of those two components.

    Click the link to respond:
    CAN THERE BE CLOSED LOOP CONTROL WITH STEPPING MOTORS?

  • 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.

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

  • What is the micro-stepping value of the STB4100?

    The Mach3 USB (STB4100) doesn't actually control the microstepping. Each stepper motor driver that connects to the stepper motor had a dip switch setting that you can change your microstepping value.

    The motion cars simply outputs the number of step pulses that you specify from the computer's control software. For example, if you set the stepper motor driver to move 1 inch with 1600 steps (let's say, the microstepping is 4 for simplicity and is set on the stepper motor driver), the computer's software would tell the motion card to deliver 1600 steps to the driver. The driver then moves the motor accordingly. If you change the stepper motor driver's microsteps to 2, but you maintained the 1600 steps from the computer control software, then the stepper motor would move 2 inches instead of 1 inch.

    I hope this helps with your microstepping question related to the cnc motion card. Just remember to modify the steps/inch or steps/mm setting in your CNC control software and it corresponds to the setting on the stepper motor driver.

    Click the link to respond:
    What is the micro-stepping value of the STB4100?

  • what is microstepping concerning the drivers

    Stepper motors are designed to move in specific increments; these increments are called "steps". For example, a common standard is for 200 steps per full revolution. Microstepping is a method to send signals to the motor to move only a fraction of a full step at a time. For example, if a motor has 200 steps per revolution and is microstepped 1/16, then effectively there are 3200 small step movements (microsteps) per revolution instead of 200 larger ones. This makes the motion of the motor much smoother and more precisely controllable, at the cost of decreased holding torque.

    Here are is a good references for stepper motor theory: http://users.ece.utexas.edu/~valvano/Datasheets/StepperMicrostep.pdf

    And Wikipedia has a good overview as well:
    https://en.wikipedia.org/wiki/Stepper_motor

    Additional Information:


    Additional Information:
    Therefore, the difference in 128th and 64th microstepping is increased resolution and smoothness for 128th microstepping, at the cost of decreased holding torque.

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    what is microstepping concerning the drivers

  • 3d printer motors not moving fast enough. How should I configure the motor drivers?

    This will depend on the 3D printer that you are using and the mechanics involved. Specifically regarding the motor drivers, software is really what determines the speed of the motor. If the computer is not able to product the high number of pulses that is required for faster motion, then you can reduce the microstepping and configure the software appropriately for the new microstepping so the resolution is corrected (steps/inch or steps/mm).

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    3d printer motors not moving fast enough. How should I configure the motor drivers?

  • What's the difference between 128 microstepping and 1-1/64 microstepping?

    I'm not sure what particular devices you're talking about so I can't help you as far as compatibility goes, but a microstep fraction refers to the resolution of the rotating motor. let's say your motor takes 200 whole steps to make one complete revolution of the spindle. If you then set your motor to run at 1/64 microsteps it would mean your motor is taking 64 times more steps to cover the same distance, making a total of 12,800 steps to make one complete revolution of the spindle. So a smaller fraction of steps like 1/128, would take even more steps to complete one revolution, 25,600 in fact.

    If you're talking about motor drivers it's probably telling you how many options of resolution you have.
    one giving the highest resolution of 1/128 microsteps but probably still capable of doing 1/64, 1/32, 1/16, 1/8, 1/4, 1/2 and 1 whole step.
    the other one that says 1-1/64 is telling you it ranges between 1 whole step and 1/64th microsteps, so you could do the fractions between like 1/32, 1/16, 1/8, 1/4 and 1/2 as well.

    The amount of microsteps you want to make in one revolution is totally up to you, more steps potentially means a more precise machine, but at a certain point the extra steps may be unnecessary.

    hope this helps

    Click the link to respond:
    What's the difference between 128 microstepping and 1-1/64 microstepping?

  • What's the difference between 128 microstepping and 1-1/64 microstepping?

    Stepper motors are designed to move in specific increments; these increments are called "steps". For example, a common standard is for 200 steps per full revolution. Microstepping is a method to send signals to the motor to move only a fraction of a full step at a time. For example, if a motor has 200 steps per revolution and is microstepped 1/16, then effectively there are 3200 small step movements (microsteps) per revolution instead of 200 larger ones. This makes the motion of the motor much smoother and more precisely controllable, at the cost of decreased holding torque.

    Here are is a good references for stepper motor theory: http://users.ece.utexas.edu/~valvano/Datasheets/StepperMicrostep.pdf

    And Wikipedia has a good overview as well:
    https://en.wikipedia.org/wiki/Stepper_motor

    Additional Information:


    Additional Information:
    Therefore, the difference in 128th and 64th microstepping is increased resolution and smoothness for 128th microstepping, at the cost of decreased holding torque.

    Click the link to respond:
    What's the difference between 128 microstepping and 1-1/64 microstepping?

  • What is the number of pole pairs and rotor inertia for NEMA 23 Stepping motor?

    You can find the wiring diagram, and technical specifications for the NEMA 23 motor, on it's product page, found here,

    https://www.buildyourcnc.com/Item/electronicsAndMotors-nema23-100ozin-newbiehack-motors-stepping_motors-100_ozin

    There is a datasheet below the product description. This image will expand to be easier visible once clicked on.

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    What is the number of pole pairs and rotor inertia for NEMA 23 Stepping motor?

  • What is the runout on the 2.5 KW spindle and how many bearings?

    The runout on our 2.2kW spindle and number of bearings are:
    Radial runout: 0.01mm - 0.000393701 inches, 3 Bearings

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    What is the runout on the 2.5 KW spindle and how many bearings?

  • Is there a better manual for the laser engraving controle having problems with the set up of the stepping motors etc

    This "question 12186" could be a good place to house questions on the laser controller. We are in the process of creating thorough video instructions, but please add specific questions by clicking the "submit additional information" and we will answer questions regarding the laser controller with detail.

    Click the link to respond:
    Is there a better manual for the laser engraving controle having problems with the set up of the stepping motors etc

  • how to connect the parallel breakout board to the stepping motor drivers

    The very best way to explain how to connect the parallel breakout board is to follow these tutorials on this site: https://buildyourcnc.com/CNCElectronicsandWiring.aspx#prettyPhoto

    Click the link to respond:
    how to connect the parallel breakout board to the stepping motor drivers

  • What brand and/or country of origin are the stepper motors?

    The stepping motors we sell are from China.

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    What brand and/or country of origin are the stepper motors?

  • I am upgrading a CNC with 3 stepping motors, and its all I want to keep. What technical information do you need in order to receive a quotation from you with the new items I need to buy from you?

    Dealing with your CNC upgrade we will need a good detail on exactly what you plan on keeping and reusing, all technical information about the parts that you keep will make our recommendations more precise for your application.

    Please email customerservice@buildyourcnc.com for any quote related questions.

    Click the link to respond:
    I am upgrading a CNC with 3 stepping motors, and its all I want to keep. What technical information do you need in order to receive a quotation from you with the new items I need to buy from you?

  • What size stepper motors does the blueChick use?

    The blueChick uses NEMA 23 425 oz/in motors.

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    What size stepper motors does the blueChick use?

  • So after I install the stepper motors, how does the system know what’s the start position ? I’m modifying a lathe.

    If you are using a control program, like Mach3, then you will move (jog) the axis to the location that you want to set as your start position and "zero" that axis. Make sure that the axis moves in the positive direction where you would expect. If this is not the case, you will need to reverse that axis according to the instruction with your control program.

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    So after I install the stepper motors, how does the system know what’s the start position ? I’m modifying a lathe.

  • I have theNema 24, 425 Oz stepper motors kit what are my Ports and Pins?

    The ports and pins are designated by the breakout board that you have, Now here are the schematics for both(https://www.buildyourcnc.com/item/electronicsAndMotors-parallel-breakout-relay#prettyPhoto/2/ and https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-USB-Controller-Breakout#prettyPhoto/2/) Which for the Parallel the pins will be 1,14,2,3,4,5,6,7,8,9. For 1,14 you will need to use them together for a additional axis. Setup will be (ex.mach3) step in (2) / direction pin (3). continued for other pins, 4,5 6,7 etc.
    Now for the USB it has the label on the board right next to the terminal blocks, x-axis/etc.

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    I have theNema 24, 425 Oz stepper motors kit what are my Ports and Pins?

  • WHAT MOTORS DOES THE BLACK TOOTH USE?
  • WHAT MOTORS DOES THE BLACK TOOTH USE?
  • how do I determine the steps per inch for the motors?

    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

    Additional Information:


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

    Additional Information:

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    how do I determine the steps per inch for the motors?