Leadshine 3DM683 3-Phase Stepper Motor Driver – 20–60V DC

LASER PARTS | MOTION CONTROL

Leadshine 3DM683 3-Phase Stepper Motor Driver

The Leadshine 3DM683 is a fully digital three-phase stepper motor driver designed for compatible CO2 laser engraving and cutting machines, CNC equipment, and industrial motion-control systems.

Operating on 20–60V DC, the 3DM683 uses digital signal processing (DSP) technology to provide controlled, repeatable motor movement. Its anti-resonance technology helps reduce vibration and improve motor performance, particularly at lower operating speeds.

Adjustable motor current, selectable microstepping resolutions, and automatic motor parameter setup allow the driver to be configured for a range of compatible three-phase stepper motors. Additional settings can be adjusted through Leadshine's supported ProTuner software and RS232 connection.

Key Features

• Three-Phase Motor Control: Designed for compatible three-phase stepper motors with three or six motor leads.
• DSP-Based Technology: Digital control provides smooth, accurate motor positioning.
• Anti-Resonance Control: Helps reduce vibration and mid-range resonance during motor operation.
• Adjustable Motor Current: Seven fixed DIP switch selections from 3.2A to 8.3A peak, plus software-adjustable current from 0.5A to 8.3A.
• Microstepping Control: Fifteen fixed pulse resolutions with additional software-programmable settings.
• Automatic Motor Setup: Supports motor self-test and automatic parameter configuration.
• Multiple Control Modes: Supports Pulse/Direction and CW/CCW operation.
• Low-Noise Operation: Advanced motor-control algorithms help reduce vibration and operating noise.
• Standstill Current Control: Supports reduced motor current when the motor is stopped to limit heating.
• RS232 Configuration: Additional settings can be adjusted using compatible Leadshine ProTuner software and connection equipment.
• Built-In Protection: Provides overcurrent, overvoltage, and motor-phase error protection.

Technical Specifications

Manufacturer	Leadshine
Model	3DM683
Rabbit Laser Part Number	SMD-3DM683
Driver Type	Digital 3-Phase Stepper Motor Driver
Input Voltage	20–60V DC
Programmable Peak Current	0.5–8.3A
Maximum RMS Current	5.9A
Fixed Current Settings	7 via DIP Switches
Fixed Pulse Resolutions	400–25,600 Pulses/Revolution
Software Pulse Resolution	200–102,400 Pulses/Revolution
Fixed Resolution Settings	15 via DIP Switches
Maximum Pulse Frequency	200kHz
Control Modes	Pulse/Direction, CW/CCW
Control Signal Inputs	PUL+, PUL-, DIR+, DIR-, ENA+, ENA-
Input Isolation	Optically Isolated, TTL Compatible
Motor Connections	U, V, W
Power Connections	+VDC, GND
Motor Compatibility	3-Phase, 3- or 6-Lead Motors
Configuration Interface	RS232 / Leadshine ProTuner
DIP Switches	SW1–SW8
Protection	Overcurrent, Overvoltage, Motor Phase Error
Cooling	Natural or Forced-Air Cooling
Dimensions	118 × 75.5 × 34mm
Approximate Net Weight	270g

Motor Current Settings

The 3DM683 provides seven fixed motor-current settings through DIP switches SW1, SW2, and SW3. An additional default position enables software-controlled current adjustment.

Peak	RMS	SW1	SW2	SW3
Software	Default	OFF	OFF	OFF
3.2A	2.3A	ON	OFF	OFF
4.0A	2.9A	OFF	ON	OFF
4.9A	3.5A	ON	ON	OFF
5.7A	4.1A	OFF	OFF	ON
6.4A	4.6A	ON	OFF	ON
7.3A	5.2A	OFF	ON	ON
8.3A	5.9A	ON	ON	ON

SW4 Standstill Current: OFF selects half current; ON selects full current, according to the switch label on the driver.

Select the motor-current setting based on the connected motor's electrical ratings and wiring arrangement. Excessive current may cause overheating, while insufficient current can result in missed steps or poor motor performance.

Microstepping Configuration

DIP switches SW5 through SW8 provide fifteen fixed pulse-resolution selections and one software-controlled configuration.

Fixed resolutions include 400, 800, 1,000, 1,600, 2,000, 3,200, 4,000, 5,000, 6,400, 8,000, 10,000, 12,800, 20,000, 25,000, and 25,600 pulses per revolution for the specified 1.2-degree motor configuration.

With compatible Leadshine ProTuner software and connection equipment, additional resolutions can be configured between 200 and 102,400 pulses per revolution.

Use the configuration chart printed on the driver when selecting DIP switch positions. Motor step angle and controller settings must be considered when calculating machine movement.

Compatibility

The Leadshine 3DM683 is intended for compatible three-phase stepper motor systems used in laser engraving and cutting machines, CNC equipment, X-Y motion stages, and other industrial motion-control applications.

Before ordering, compare the existing driver's model, input voltage, motor-current requirements, control-signal configuration, motor connections, DIP switch settings, and mounting dimensions.

Important: The 3DM683 is a three-phase motor driver and is not a direct replacement for a two-phase bipolar driver. Similar model names or matching connectors do not guarantee compatibility.

Installation & Setup

• Disconnect machine power and allow stored electrical energy to discharge before servicing.
• Photograph and label the original driver connections and DIP switch positions before removal.
• Verify the DC power supply voltage and polarity before connecting the replacement driver.
• Connect the compatible three-phase motor to the U, V, and W terminals according to its wiring documentation.
• Confirm the pulse, direction, and enable signal connections with the machine controller.
• Set motor current and microstepping resolution to match the motor and controller.
• Mount the driver securely with adequate ventilation around its heatsink.
• Never connect or disconnect motor wiring while the driver is powered.
• Test motor operation and axis movement at reduced speed before returning the machine to normal operation.

Troubleshooting

Common motion-control problems include an axis that fails to move, motor vibration without rotation, missed steps, inconsistent positioning, excessive motor heating, or an illuminated fault indicator.

These symptoms do not always indicate a failed driver. Incorrect settings, wiring faults, power-supply issues, mechanical binding, or an incompatible motor can cause similar problems.

Before replacing the driver, inspect the existing wiring, motor connections, power supply, and configuration settings.