DM860H Digital Stepper Motor Driver 18-80VAC/24-110VDC 2.4-7.2A
The DM860H is a robust DSP‑driven hybrid stepper driver optimized for two‑phase and four‑phase NEMA 23–34 motors. It accepts 18–80 VAC or 24–110 VDC, delivers 2.4–7.2 A peak output current via SW1–SW3, and offers 400–25,600 steps/rev microstepping via SW5–SW8. Key functions include auto‑tuning/self‑test, anti‑resonance smoothing to eliminate mid‑speed instability, soft‑start to prevent motor kick, and idle‑current reduction for lower heat.
Features
- Peak current 2.4–7.2 A, selectable in eight levels via SW1–SW3.
- Voltage supply 18–80 VAC or 24–110 VDC without additional wiring modes.
- Microstepping from 400 to 25,600 steps/rev via SW5–SW8.
- Auto‑tuning/self‑test for quick setup and optimal performance.
- Anti‑resonance filtering for smooth mid‑speed torque and low vibration.
- Soft‑start prevents motor “jump” at power‑on.
- Idle‑current reduction to 50 % after ~1 s inactivity.
- Opto‑isolated step/direction inputs (PUL/DIR) with fixed CW/CCW handling.
- Comprehensive protections: over‑voltage, under‑voltage, over‑current, and motor‑open/short.
Specifications
| Parameter | Value |
|---|---|
| Model | DM860H |
| Driver Type | DSP‑controlled two‑phase hybrid stepper driver |
| Supported Models | NEMA 23–34 hybrid stepper motors |
| Input Voltage | 18–80 VAC / 24–110 VDC |
| Peak Output Current | 2.4–7.2 A |
| Microstep Resolution | 400–25,600 steps/rev |
| Pulse Frequency | Up to 200 kHz |
| Control Modes | Fixed PUL/DIR step & direction |
| Soft‑Start | Yes |
| Anti‑Resonance | Yes |
| Idle‑Current Reduction | 50 % after ~1 s inactivity |
| Protections | Over‑voltage, under‑voltage, over‑current, motor‑open/short |
| Operating Temp Range | 0 °C – 50 °C |
| Storage Temp Range | –20 °C – 80 °C |
PINOUT
Applications
- Drives NEMA 23–34 motors in CNC routers, laser cutters, and electromechanical actuators.
- Ideal for pick‑and‑place machines, XY tables, and robotics requiring smooth torque.
- Suited for automation, packaging, and precision instrumentation.
Package Contents
- 1x DM860H Digital Stepper Motor Driver 18-80VAC/24-110VDC 2.4-7.2A
