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  • Me 2H Microstep Driver (12008) STEM STREAM Electronic Modules Motor DriverMe 2H Microstep Driver (12008) STEM STREAM Electronic Modules Motor Driver
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Country of Origin China
Description
  • Makeblock Me 2H Microstep Driver
  • 2-phase hybrid stepper motor driver
  • Adopts the power supply of DC 12~36V
  • Suitable for driving the 2-phase hybrid stepper motor with voltage of 24~36V & current less than 2.0A
  • Uses the full digital current loop to implement microstepping control
  • Used in engraving machine, CNC machine tools, packaging machinery, transmission equipment, and other high resolution devices
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Video
  • 01. User Guide of Makeblock Stepper Motor
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Description

Overview

Me 2H Microstep Driver is a kind of 2-phase hybrid stepper motor driver, and adopts the power supply of DC 12~36V. It is suitable for driving the 2-phase hybrid stepper motor with voltage of 24~36V and current less than 2.0A. This driver uses the full digital current loop to implement microstepping control, so the motor features small torque ripple, low speed and smooth running, low vibration and noise. When running at high speed, its output torque is relatively high, and its positioning accuracy is high. It can be used in engraving machine, CNC machine tools, packaging machinery, transmission equipment, and other high resolution devices.


Technical specifications
    Input voltage: 12~36V DC
    Input current: less than 2 A
    Output current: 0.4~2.83 A
    Power consumption: 40 W
    Internal fuse: 6 A
    Humidity: dew and water drop are not allowed
    Dimension: 96 x 56 x 35mm (L x W x H)

Functional characteristics
    Average current control, 2-phase sinusoidal current drive output
    8 grades of microstepping and semi-flow function
    8 grades of output phase current settings
    Large torque at high speed
    High star-up rotary speed
    Offline function
    Photoelectric isolation signal input/output
    Over-voltage, under-voltage, over-current, and inter-phase short circuit protection function

Pin definition
    PUL: Input a pulse signal
    +5V: Common anode for signal input
    DIR: Input a direction signal
    ENBL: Input an offline enable signal
    A+: A+ stepper motor winding
    A-: A- stepper motor winding
    B+:B+ tepper motor winding
    B-: B- stepper motor winding
    DC+: anode of power supply for stepper motor
    DC-: cathode of power supply for stepper motor

Principle analysis
Set the number of steps per round for the motor
The driver can set the number of steps per round as 200, 400, 800, 1600, 3200, 6400, 12800, 25600 steps for the motor. Users can set the number of steps for the driver (Pulse/rev) by using the SW5, SW6, and SW7 of DIP switch on the front panel of driver. See following table:

Selecting the control mode

The SW4 of DIP switch can be set as follows:

    OFF – semi-flow function
    ON – no semi-flow function

The semi-flow function refers to when no-stepping pulse exists over 500ms, the output current of driver automatically reduces to 70% of its rated output current to prevent the motor overheat.

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For all products are related to proper recycling of regulated electrical equipment. A product set out in this receipt is regulated electrical equipment under the Product Eco-responsibility Ordinance (Cap. 603). The Ordinance imposes a recycling levy on the product as follows: 

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