DM556 Digital Stepper Motor Driver 20-50VDC 1.4-5.6A

Description

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. Manual DM556 Digital Stepper Motor Driver .

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