DM860H DM860 2-Phase Stepper Motor Driver 7.2A NEMA34
DM860H DM860 2-Phase Stepper Motor Driver 7.2A NEMA34
Details
DM860H / DM860 Digital 2-Phase Stepper Motor Driver
The DM860H / DM860 Stepper Motor Driver is a professional-grade, two-phase hybrid digital microstep driver built for precision automation. Whether you're running a CNC router, engraving machine, marking machine, or plotting system, this driver delivers smooth, quiet, and accurate motor control across a broad range of voltage inputs and current settings.
Available in two variants: DM860 (without fan) and DM860H (with cooling fan) — choose the model that best suits your installation environment and heat management needs.
Key Features
- Versatile Microstep Subdivisions: Supports 2/4/8/16/32/64/128/5/10/20/25/40/50/100/125 subdivisions — up to 25,600 steps/rev across 15 adjustable levels for ultra-smooth motion and precise positioning.
- Wide Voltage Compatibility: Operates on both DC (24–110V) and AC (18–80V) power supplies, making it easy to integrate into diverse automation setups.
- High Output Current Range: Adjustable output current from 2.0A to 7.2A, with a maximum pulse frequency of 200 KHz for fast, reliable performance.
- Single-Ended Pulse/Direction Signal Input: Compatible with a wide range of motion controllers; supports universal external signal range of 3.3–24V without series resistors — plug and play simplicity.
- Built-In Protection: Overheat, overcurrent, and undervoltage lockout protection keep the driver and connected motors safe. Reverse connection protection on the input voltage adds an extra layer of reliability.
- Optocoupler-Isolated Signal Input: Provides strong anti-interference capability for stable performance in demanding industrial and workshop environments.
- Efficient Heat Dissipation: Large-volume heat sink design (DM860) and active cooling fan (DM860H) ensure consistent long-term operation without thermal throttling.
- Compatible with NEMA 34 Stepper Motors: Also supports NEMA 23 (57mm) and NEMA 34 (86mm) four-wire, six-wire, and eight-wire two-phase hybrid stepper motors rated 7.2A and below.
Specifications
| Parameter | Value |
|---|---|
| Input Voltage (DC) | 24V – 110V DC |
| Input Voltage (AC) | 18V – 80V AC |
| Output Current | 2.0A – 7.2A |
| Max Pulse Frequency | 200 KHz |
| Microstep Resolution | Up to 25,600 steps/rev (15 levels) |
| Motor Phases | 2-Phase Hybrid Stepper |
| Compatible Motors | NEMA 23 (57mm), NEMA 34 (86mm) |
| Signal Input Range | 3.3V – 24V |
| Colour | Black |
| Dimensions | 150 × 95 × 50 mm (5.91 × 3.74 × 1.97 in) |
| Country of Origin | Made in China |
What's in the Box
- DM860: 1× DM860 Stepper Motor Driver (without cooling fan)
- DM860H: 1× DM860H Stepper Motor Driver (with cooling fan)
Typical Applications
Ideal for use in CNC machine tools, engraving machines, laser marking machines, cutting machines, plotters, phototypesetting equipment, and automated handling devices. Particularly effective where low noise, high subdivision, and high-current drive performance are required.
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Frequently Asked Questions
Q: What is the difference between the DM860 and DM860H stepper motor drivers?
A: The DM860 is the base model stepper motor driver and comes without a cooling fan, relying on its large-volume heat sink for thermal management. The DM860H is the enhanced version and includes an active cooling fan, making it better suited for high-duty-cycle or high-current applications where additional heat dissipation is important. Both models share the same electrical specifications and microstep capabilities.
Q: Which stepper motors are compatible with the DM860H / DM860 driver?
A: This driver is compatible with two-phase hybrid stepper motors (four-wire, six-wire, or eight-wire configurations) rated at 7.2A or below, including NEMA 23 (57mm) and NEMA 34 (86mm) frame motors. It is specifically noted as well-suited for Nema34 stepper motors used in CNC, engraving, and automation equipment.
Q: Can the DM860H driver work with both AC and DC power supplies?
A: Yes. The DM860H / DM860 stepper driver supports a wide input voltage range: DC 24V–110V and AC 18V–80V. Built-in reverse connection protection and undervoltage lockout ensure safe operation across these power supply configurations.
Q: Does this driver require external resistors for signal input wiring?
A: No. The DM860H / DM860 driver supports a universal external signal input range of 3.3V to 24V without the need for series resistors, simplifying wiring and integration with most motion controllers and PLCs.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.
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