DM860H Digital Stepper Motor Driver – 7.2A 18–80VAC/24–110VDC, 2_Phase DSP_Controlled Driver

Overview:

The DM860H is a high-performance digital stepper motor driver powered by DSP technology, designed for 2-phase hybrid stepper motors. Supporting frame sizes 57mm, 60mm, and 86mm with peak current up to 7.2A, it optimizes quiet, smooth operation with minimal vibration. It integrates motor-specific control algorithms and advanced protection features (overheat, overcurrent, overvoltage) to ensure reliable performance. The driver allows flexible configuration of 128 microstepping levels and current settings, making it suitable for precision motion control applications.

Key Features:

Wide Voltage Range: 18–80VAC or 24–110VDC input for versatile power supply setups

Adjustable Output Current: 2.00A to 6.00A average (2.40A to 7.20A peak) via 8-level DIP switch control (SW1–SW3)

Microstepping Options: Up to 128 subdivisions (400 to 25600 pulses/rev) configurable via SW5–SW8

DSP Control Algorithm: Delivers smooth, low-noise motion with minimal vibration

Signal Compatibility: 5–24VDC for PUL, DIR, and ENA input signals, with pulse width >1.2μs

Built-in Protections: Overvoltage, overcurrent, and thermal fault detection for drive stability

Cooling: Natural cooling or forced air cooling supported

Durable Design: Suitable for industrial automation equipment requiring high reliability

Applications:

Ideal for 3D printers, laser processing equipment, engraving machines, medical instruments, measurement devices, electronics manufacturing equipment, and textile machinery. It is the preferred choice for applications demanding low vibration, low noise, and cost-effective performance.

Wiring Interface:

PUL+ / PUL-: Pulse input signal (rising edge effective by default, pulse width >1.2μs)

DIR+ / DIR-: Direction control signal (level-triggered, requires >5μs setup before pulses)

ENA+ / ENA-: Enable signal (low level disables motor output, can be left floating if unused)

AC+ / AC-: Power input (18–80VAC or 24–110VDC)

A+ / A-, B+ / B-: Stepper motor phase windings (4/6/8-wire compatible)

DIP Switch Settings:

Current (SW1–SW3): 8-level adjustment from 2.00A (2.40A peak) to 6.00A (7.20A peak)

Standby Mode (SW4): ON for full current, OFF for half current

Microstepping (SW5–SW8): 15 levels including 2, 4, 8, 16, 32, 64, 128, 5, 10, 20, 25, 40, 50, 100, 125 steps/rev

Environmental & Physical Specs:

Operating Temperature: 0°C – 50°C

Humidity: 40–90% RH (non-condensing)

Weight: 0.55kg

Cooling: Natural convection or external fan

Avoid dust, oil, corrosive gases, high humidity, and strong vibration

Storage Temperature: -20°C – 65°C