The CMU DMA860H Stepper Motor Driver is a high-performance CNC microstepping drive designed for demanding motion-control applications. Built on pure-sinusoidal current control technology, the DMA860H delivers exceptionally smooth motor operation, reduced noise, and lower heat generation compared to conventional stepper drivers. Its intelligent self-adjustment technology automatically optimizes current control parameters to match different motors, ensuring stable and efficient performance across a wide speed range.
This driver is ideal for 2-phase and 4-phase hybrid stepper motors, making it a reliable choice for CNC machines, engraving systems, laser cutters, robotic platforms, and other precision automation equipment.
Product Overview
The DMA860H offers excellent high-speed performance with precise microstepping control of up to 51,200 steps per revolution. It supports both PUL/DIR and CW/CCW control modes and features optically isolated, TTL-compatible inputs for improved noise immunity in industrial environments. With robust protection mechanisms and automatic idle-current reduction, this driver ensures safe, efficient, and long-term operation.
Key Features
- Pure-Sinusoidal Current Control Technology for ultra-smooth motor motion
- Self-Adjustment Technology automatically matches different stepper motors
- High Output Current: Up to 7.2A
- Wide Supply Voltage: Up to 80VAC or 110VDC
- Excellent High-Speed Performance with low vibration and noise
- High Pulse Input Frequency: Up to 300 kHz
- 16 Selectable Microstep Resolutions (decimal and binary), up to 51,200 steps/rev
- TTL-Compatible & Optically Isolated Inputs for reliable signal transmission
- Automatic Idle-Current Reduction to minimize motor heating
- Multiple Protection Functions:
Short-voltage
Over-voltage
Over-current
Short-circuit protection - Supports 2-Phase and 4-Phase Stepper Motors
- Control Modes: PUL/DIR and CW/CCW
Specifications
- Model: DMA860H (MA860H Microstepping Drive)
- Input Voltage: Up to 80VAC or 110VDC
- Output Current: Up to 7.2A
- Pulse Input Frequency: Up to 300 kHz
- Microstepping: 16 selectable resolutions, up to 51,200 steps/rev
- Motor Compatibility: 2-phase and 4-phase hybrid stepper motors
- Operating Temperature: Up to 70 C
- Idle Current Reduction: Automatic
Power & Motor Terminal Assignments
Power & Motor Connections
- +Vdc: Power supply (20-30VDC, including voltage fluctuation and EMF)
- GND: Power ground
- A+: Motor Phase A+
- A-: Motor Phase A-
- B+: Motor Phase B+
- B-: Motor Phase B-
Pulse & Direction Inputs
- PUL+: Pulse positive input
- PUL-: Pulse negative input
- DIR+: Direction positive input
- DIR-: Direction negative input
- ENA+: Enable positive input
- ENA-: Enable negative input
Typical Applications
- CNC milling and engraving machines
- Laser cutting and marking systems
- Industrial automation equipment
- Robotics and motion-control systems
- High-precision positioning platforms
The CMU DMA860H Stepper Motor Driver combines power, precision, and reliability in a cost-effective solution, making it an excellent choice for both professional CNC installations and advanced DIY motion-control projects.
What's in the box
1 x CMU STEPPER MOTOR DRIVER DMA860H - CNC Microstepping Stepper Drive 7.2A
