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Leadshine DM542 Digital Stepper Motor Driver 20–50 VDC 4.2 A – DM542
Leadshine DM542 digital stepper driver for NEMA 17–34 motors, 20–50 VDC, 1.0–4.2 A peak, up to 25,600 steps/rev, with anti-resonance and 200 kHz isolated inputs.
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| Brand | Leadshine |
|---|---|
| Series | DM fully digital stepper drives |
| Product Type | 2-phase digital stepper motor driver |
| Model | DM542 |
| Part No | DM542 |
| Supply Voltage | 20–50 VDC (typical 36 VDC) |
| Output Current | 1.0–4.2 A peak (3.0 A RMS max.) |
| Current Settings | 8 selectable peak currents: 1.00 / 1.46 / 1.91 / 2.37 / 2.84 / 3.31 / 3.76 / 4.20 A (SW1–SW3) |
| Idle Current | Automatic idle-current reduction (SW4) |
| Microstep Resolution | 15 selectable settings, 400–25,600 steps/rev for 1.8° motor (SW5–SW8) |
| Pulse Input Frequency | 0–200 kHz |
| Min. Pulse Width | 2.5 µs |
| Input Signal Voltage | 5–24 VDC, optically isolated |
| Logic Signal Current | 7–16 mA (10 mA typical) |
| Control Mode | PUL/DIR or CW/CCW |
| Isolation Resistance | 500 MΩ |
| Protection | Over-voltage (> 52 VDC) and over-current, with red LED fault indication |
| Suitable Motors | 2-phase and 4-phase hybrid stepper motors, NEMA 17 to 34 |
| Cooling | Natural or forced air cooling |
| Ambient Temperature | 0 to 50 °C |
| Max. Operating Temperature | 70 °C |
| Humidity | 40–90% RH |
| Vibration | 5.9 m/s² max. |
| Storage Temperature | -20 to 65 °C |
| Weight | Approx. 300 g |
Product Overview
The Leadshine DM542 is a fully digital 2-phase stepper motor driver designed for medium-size hybrid stepper motors from NEMA 17 to NEMA 34. It runs from a 20–50 VDC supply and delivers 1.0 to 4.2 A peak (up to 3.0 A RMS) output current, selectable in 8 steps by DIP switch, with 15 microstep resolutions from 400 to 25,600 steps per revolution.
Its advanced digital control with anti-resonance, motor auto-identification, multi-stepping and soft-start gives smoother motion, higher torque at mid-range speeds and lower motor heating and noise than conventional analog drives. Optically isolated step/direction (or CW/CCW) inputs accept 5–24 V signals at up to 200 kHz, and built-in over-voltage and over-current protection keep the drive and motor safe in CNC and automation machines.
Key Features
- 20–50 VDC supply, 1.0–4.2 A peak output current
- 8 selectable current settings via DIP switch
- 15 microstep settings, up to 25,600 steps/rev
- Anti-resonance for smooth, quiet motion
- Motor auto-identification and parameter auto-configuration
- Optically isolated PUL/DIR or CW/CCW inputs up to 200 kHz
- Automatic idle-current reduction and soft-start
- Over-voltage and over-current protection
Applications
- CNC routers and engraving machines
- X-Y tables and positioning stages
- Laser cutting and marking machines
- Labeling machines
- Pick-and-place devices
- Packaging machines
- 3D printers and DIY CNC builds
- Medical and laboratory automation
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