MACH3 CNC SOFTWARE STEPPER MOTOR CHANGING DIRECTION DRIVER

50Khz step rate is 1875rpm with the stepper driver set at 8 microstepping. This is a good replacement for the parallel port using 45Khz kernel speed MACH3 setting. It does work well for step frequencies under 50Khz. This is the Mach3mill.xml file I used to configure and test this controller.Д«SMCE04U-PP 4 axis controller works but due to the rough motor motion at higher step frequencies, this isnвЂ™t a very good controller for high step rates. Place this file in the MACH3 plugin folder.

MACH3 requires the rnrmotion.dll plugin driver to work. There is no 3.3 volt screw terminal connector. There is a 3.3 volt on board regulator for the STM32 microcontroller use only. The +5V terminal is the same as computer USB +5 and caution should be taken if you use this terminal to power external devices. The two GND terminals do connect to the computer USB ground. This keeps the optoisolators separated from the computer USB ground. The two GND, ACM and DCM ground terminals are isolated from each other. I connected a Agilent rotary encoder and was able to jog the stepper motor with it. This requires a quadrature rotary encoder to work.

MACH3 CNC SOFTWARE STEPPER MOTOR CHANGING DIRECTION MANUAL

The 10 pin black connector is for the manual pulse generator. Many diode laser controllers are 5 volt PWM. If your spindle requires a 5 volt PWM, you can apply 5 volts to the 10V terminal instead. The output signal is driven by a transistor which gives a cleaner looking square wave. This has better linearity than using one of the four output pins as PWM. For this to work, a 10 volt power supply must be connected to the 10V and GND terminals. The voltage output pins are between AVI and ACM ground screw terminals. There is a seperate available 10 volt PWM that can be used to control spindle speed. The PWM can also be configured as active low or active high. The output ports are Open Drain/Collector type, a pull up resistor may be required. Below are the oscilloscope images of 3k rpm, 12k rpm and 23k rpm spindle output speeds. The optocouplers have been tested and worked fine with a supply voltage up 24 volts.

A minimum of 5.5 volts is required to activate the optocouplers. This requires a separate power supply connected to screw terminals labeled 24V and DCM ground. The I/O ports have Eе…ѓ57N optocouplers for safety. This can be limit switches, ESTOP, PWM, touch probe etc. These input and output ports can be configured as needed for the various functions that MACH3 supports. There are also four input and four output ports. There is no ENABLE output on this controller board

MACH3 CNC SOFTWARE STEPPER MOTOR CHANGING DIRECTION DRIVERS

Since the board uses a line driver for the step and direction outputs, the connection to stepper drivers is simple. The step and direction signals can be configured as active low or active high in MACH3 ports and pins setup page. This step pulse width is long enough to work with almost every stepper driver available. When the plugin driver is set at 100Khz, the step pulse width is 5 microseconds. I verified this with both short and extra long motion moves. The correct number of step pulses was generated for each commanded motion distance. I used a logic analyzer to capture and count the step pulses. The step and directions signals are buffered with a 74HC541 line driver. The controller has four step and direction axis output ports вЂ“ X, Y, Z and A.

Slave axis configuration has been tested, the same step pulse was generated on both the X and A axis outputs simultaneously. Step frequencies below 50Khz are better and motor motion is smoother. These pauses can cause rough motor motion. However at higher step frequencies, there are pauses in the step pulse train.

MACH3 CNC SOFTWARE STEPPER MOTOR CHANGING DIRECTION PC

Using a microcontroller to generate step pulses is usually more reliable than a PC parallel port.

Have 0-10V output port, you can use mach3 software to control the spindle motor speed (PWM mode and relay mode).The controller uses a STM32F103 microcontroller to generate the step pulses up to 100Khz.

Need to use external 12-24V DC power supply when using Outputs, to isolate USB and external port, and to make the system more stable.

Support for connecting electronic handwheel.

Maximum step-pulse frequency is 100KHz,which is suitable for the servo or stepping motor.

Supports 4-axis linkage, you can connect four stepper motor drives or servo drives.

If you buy this item together with stepper motor kit, you are entitled to an online support of our experts.

MACH3 CNC SOFTWARE STEPPER MOTOR CHANGING DIRECTION HOW TO

The item comes with user manual, detailing how to control the USB Controller Card with Mach3 and how to connect USB Controller card to stepper motors, handwheel, spindle, z-probe etc. The interference signal will not be introduced because of the introduction of the external strong current equipment. This type of the USB CNC Controller Card is of strong anti-interference ability, the frequency converter interface is isolated from the computer and the main control circuit.

Mach3 cnc software stepper motor changing direction