MD5042 Analog Microstep driver 50V/4.2A

Microstep driver 50V/4.2A

54.90 € Without Taxes 54.9 EUR 54.90 €

54.90 €

65.88 € 65.88 € with taxes

  • Brand
  • Max. Voltage
  • Max. current
  • Resolution setting

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Product Documents

Manuel MD5042

Internal Reference: MD5042

MD5042 Analog Microstep driver


  • Patented Technology
  • Low cost
  • High torque, even at high speed
  • Input voltage 20-48VDC , Peak current 4.2A max (3A RMS)
  • 3-state current control technology
  • Automatic idle-current reduction (configurable)  
  • For use with 2 or 4 phases motors (unipolar or bipolar)
  • Opto-isolated input signals
  • Pulse input frequency up to 400 KHz
  • 15 selectable micro-step resolutions of 400-25,000 via DIP switches
  • 8 selectable output current settings of 1A to 4.2A via DIP switches
  • Configurable mode: PULSE/DIRECTION or CW/CCW
  • Short circuit, over voltage and under voltage protection
  • Contained dimension (118x75.5x33mm)
  • Pluggable connectors


The MD5042 is a high performance microstepping driver using the most modern technologies. It can be used to drive 2-phase or 4-phase hybrid stepper motors (bipolar or unipolar). Thanks to an advanced technique of constant current management, it is possible to make the best use of the characteristics of your motors. The 3-state current control technology allows precise control of the current in the motor windings with low ripple and therefore less heating.


Utilisable avec une large gamme de moteurs pas à pas Nema 17 et 23, et pour différents types d'application tel que des tables XY, des machines de marquage, de découpe laser, de gravure ou des machines de placement. Particulièrement recommandé pour des applications nécessitant de faibles vibrations, des vitesses élevées et de la précision.

Electrical specifications







Output current



4.2 (3A RMS)


Voltage (DC)





Current logic signals





Input signal frequency





Insulation resistance




Mechanical specifications (Unit: mm, 1 inch=2.54 mm)

Description of connectors

P1 Command connector

Pin Function



Pulse inputs: In PULSE/DIRECTION mode, each rising edge on this input causes a step forward. Depending on the application of the signal to the PUL+ or PUL- input, the input will be active from 4 to 5V or from 0 to 0.5V. In CW/CCW mode, the input is used to advance one step in the CW direction. The minimum pulse duration is 1.5µs. For use with control signals greater than 5V, an additional series resistor is required.


DIR+ (+5V)

DIR input: In PULSE/DIR mode, this input is used to select the direction of rotation. In CW/CCW mode (mode configuration by jumper J3 in the case), the input is used to advance one step in the CCW direction. To ensure quality movements, a change of direction must be followed by a delay of at least 5µs before sending pulses.


ENA+ (+5V)

Enable input: This input is used to activate / deactivate the motor supply. At + 5V, the power is activated. At 0V, the power is deactivated. If this input is not connected, power is activated.


Note:  drivers are set to PULSE/DIRECTION mode by default.

P2 power connector

Pin Fonction



Ground DC


Motor power DC, +20VDC to +50VDC.

Phase A

Motor coil A (fil A+ et A-)

Phase B

Motor coil B (fil B+ et B-)

Microstep resolution selection :

Microstep resolution selection is selected by DIP Switches 5, 6, 7, and 8 as follow:

Microstep usteps/rev.( 1.8°/rev) SW5 SW6 SW7 SW8
2 400 OFF ON ON ON
4 800 ON OFF ON ON
8 1600 OFF OFF ON ON
16 3200 ON ON OFF ON
32 6400 OFF ON OFF ON
64 12800 ON OFF OFF ON
128 25600 OFF OFF OFF ON
5 1000 ON ON ON OFF
10 2000 OFF ON ON OFF
20 4000 ON OFF ON OFF
25 5000 OFF OFF ON OFF
40 8000 ON ON OFF OFF
50 10000 OFF ON OFF OFF
100 20000 ON OFF OFF OFF
125 25000 OFF OFF OFF OFF

Current setting

Peak Current (A) RMS (A) SW1 SW2 SW3
1.0 0.71 ON ON ON
1.46 1.04 OFF ON ON
1.91 1.36 ON OFF ON
2.37 1.69 OFF OFF ON
2.84 2.03 ON ON OFF
3.31 2.36 OFF ON OFF
3.76 2.69 ON OFF OFF
4.20 3.00 OFF OFF OFF

SW4 set to OFF :  current is reduced by 60% one second after motor stops.

SW4 set to ON : current is always as set.

Typical wiring:


Brand Soprolec
Max. Voltage 50 V
Max. current 4.2 A
Resolution setting DIP-switches
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