DM556 Digital Stepper Motor Driver 20-50VDC 1.4-5.6A
The DM556 is a digital, DSP‑driven two‑phase stepper driver tailored for NEMA 17–23 motors. It operates solely on 20–50 VDC (no AC support) and delivers 1.4–5.6 A peak output current (≈4.0 A RMS) via DIP‑switch configuration. Key functions include motor auto‑identification and auto‑tuning on power‑up, anti‑resonance smoothing to eliminate mid‑speed instability, soft‑start to prevent motor “kick,” and idle‑current reduction to cut heat during standstill.
Features
- Low noise, low motor speed.
- Average current control, two-phase sinusoidal current output.
- The servo microstep DSP algorithm, low noise, low vibration.
- The max. power supply voltage can be 50VDC.
- Output peak current from 1.4A to 5.6A.
- The standstill current can be set to half.
- High-speed optocoupler isolation signal input, pulse response frequency up to 200kHz.
- Strong anti-high frequency interference ability.
- Easy to set output current.
- Overvoltage, undervoltage, overcurrent, and phase-to-phase short circuit protection.
Specifications
| Parameter | Value |
|---|---|
| Model | DM556 |
| Driver Type | DSP‑controlled two‑phase hybrid stepper driver |
| Supported Models | Two‑phase NEMA 17–23 hybrid stepper motors |
| Input Voltage | 20 – 50 VDC |
| Peak Output Current | 1.4 – 5.6 A (SW1–SW4‑configurable) |
| Microstep Resolution | 400 – 25,600 steps/rev |
| Pulse Frequency | up to 200 kHz |
| Control Modes | PUL/DIR or CW/CCW (SW9‑selectable) |
| Soft‑Start | Yes |
| Anti‑Resonance | Yes |
| Idle‑Current Reduction | 50 % after ~1 s inactivity (SW10) |
| Protections | Over‑voltage, under‑voltage, over‑current, phase‑short |
| Operating Temp Range | 0 °C – 50 °C |
| Storage Temp Range | –20 °C – 65 °C |
PINOUT
Applications
- Drives NEMA 17–23 motors in CNC routers, laser engravers, and 3D printers.
- Ideal for XY tables, pick‑and‑place machines, and robotics requiring quiet, precise low‑speed motion.
- Suited for lab automation, light‑industrial equipment, and educational platforms.
Package Contents
- 1x DM556 Digital Stepper Motor Driver 20-50VDC 1.4-5.6A.
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