42‑57 Stepper Motor Driver Control Board Microstep Driver DC9‑42V For 42 57 Stepper Motor CNC Router Engraving Machine Robotics Motion Control Project

42‑57 Two‑Phase Stepper Motor Driver Control Board

📌 Product Overview

This is a professional two‑phase stepper motor driver board, compatible with 42 and 57 type two‑phase / four‑phase hybrid stepper motors. It supports forward‑reverse rotation control, 7‑level microstepping adjustment and 8‑level output current adjustment via onboard DIP switches. It realizes low‑vibration, low‑noise and high‑speed motor driving performance, widely used for CNC equipment, engraving machines, 3D printers and automation equipment.

📋 Electrical Parameters

表格

Item	Parameter
Input Voltage	DC 9‑40V
Recommended Power Supply	5A switching power supply
Output Current	0.5‑4.0A
Max Power Consumption	160W
Microstep Levels	1, 2/A, 2/B, 4, 8, 16, 32
Operating Temperature	-10℃ ~ +45℃
Storage Temperature	-40℃ ~ +70℃
Working Humidity	Non‑condensing, no water droplets
Working Environment	No flammable gas and conductive dust

✨ Core Features

✅ Brand‑new original stepper driver chip ✅ DIP switch adjustable output current and microstepping ✅ High‑speed optocoupler isolation for signal interface ✅ 7‑selectable micro‑step modes ✅ Automatic half‑current function for heat reduction ✅ Large‑size heat sink for high‑temperature working environment ✅ Strong anti‑high‑frequency interference capability ✅ Reverse‑connection protection for input voltage ✅ Multiple protection: over‑heat, over‑current, short‑circuit protection ✅ Offline enable function, manual rotation available when enabled

🔌 Pin Interface Description

Control Signal Interface

• ENA+, ENA‑：Motor enable offline signal
• DIR+, DIR‑：Motor rotation direction control signal
• PUL+, PUL‑：Step pulse input signal

Motor Interface

• A+, A‑：Phase‑A motor winding
• B+, B‑：Phase‑B motor winding

Power Interface

• VCC, GND：DC power input

🛠 DIP Switch Setting Instruction

Microstepping Setting (S1,S2,S3 DIP switch)

Subdivision	Pulse/Rev	S1	S2	S3
NC	NC	ON	ON	ON
1	200	ON	ON	OFF
2/A	400	ON	OFF	ON
2/B	400	OFF	ON	ON
4	800	ON	OFF	OFF
8	1600	OFF	ON	OFF
16	3200	OFF	OFF	ON
32	6400	OFF	OFF	OFF

Output Current Setting (S4,S5,S6 DIP switch)

Output Current(A)	S4	S5	S6
0.5	ON	ON	ON
1.0	ON	OFF	ON
1.5	ON	ON	OFF
2.0	ON	OFF	OFF
2.5	OFF	ON	ON
2.8	OFF	OFF	ON
3.0	OFF	ON	OFF
3.5	OFF	OFF	OFF

💡 Wiring Instructions

Two signal connection modes are supported: common‑anode and common‑cathode.

1. Common‑Anode Connection: Connect PUL, DIR, EN to control system power supply. If supply voltage＞5V, add external current‑limiting resistor to keep optocoupler driving current 8‑15mA.
2. Common‑Cathode Connection: Connect PUL‑, DIR‑, EN‑ to control system GND terminal.

Note: EN terminal can be floating. When EN signal is active, motor enters offline unlock state, motor shaft can be manually rotated for adjustment. After adjustment, disable EN signal to resume normal pulse driving.

⚠ Important Usage Notice

❗ Please power off the device before wiring. When connecting stepper motor, avoid phase‑reversal or phase‑to‑phase short‑circuit to prevent driver damage. ❗ After offline function activated, motor rotor is unlocked and free‑rotating, pulse input will be invalid. Disable offline signal, motor will respond to pulse signal and work normally. ❗ Kind reminder: If there are version differences or images have not been updated, please refer to the actual product.

📌 Application Scenarios

CNC engraving machine, 3D printer, robotic arm, automated conveyor equipment, stepper motor motion control project.