4~20 mA current-adjustable stepper motor driver
current stepper motor driver4~20 mA Current-Adjustable Stepper Motor Driver
Product Introduction
4~20 mA current-adjustable stepping motor driver is a compact and versatile solution designed for precise speed control via analog current signal. It features miniature size, wide voltage input, and seamless integration with NEMA17 and NEMA23 stepper motors.
The driver accepts 4~20 mA analog current input corresponding to 0~300 RPM speed output (default setting for peristaltic pumps), making it ideal for applications requiring adjustable speed control without complex digital communication.
Product Advantages
- Miniature Size: Ultra-compact 42.2mm × 42.2mm × 14.5mm design saves installation space.
- Wide Voltage Input: DC 12~40VDC input range, recommended working voltage 24VDC.
- High Output Current: Continuous output current 1.4A max, peak current 2.0A.
- Flexible Integration: Integrated design, mountable with NEMA17 and NEMA23 stepper motors.
- Smooth Operation: Low vibration, low noise, stable operation, low motor heating.
- Adjustable Speed: 4~20 mA current corresponding to 0~300 RPM speed range (customizable on request).
Electrical Characteristics
| Parameter | Minimum Value | Typical Value | Maximum Value | Unit |
|---|---|---|---|---|
| Supply Voltage (DC) | 12 | 24 | 40 | VDC |
| Control Signal Input Current | 4 | 10 | 20 | mA |

Product Images


Pin Definition
| Pin No. | Name | Description |
|---|---|---|
| 1 | 24V | Supply voltage: 12-40VDC, Recommend DC24V |
| 2 | GND | Supply Voltage Ground: GND/0V |
| 3 | VCC | Reserved; H/L Speed Option or other Customized requirement |
| 4 | DIR | The rotation direction of the motor, CW/CCW |
| 5 | STP | The positive pole of the speed-regulating current |
| 6 | ENA | Enable the Stepper Motor |
| 7 | DEBUG | Debug port |
Wiring Diagram

Debug Cable & Software


Demo Video
Customized Working Speed Range 0-300RPM for peristaltic pumps requirement. Adjusting current: 4~20mA corresponding to Speed: 0~300RPM:
Integrated Stepper Motor Assembly
When this NEMA17 Sized Driver assembled with NEMA23 motor via a flange, an Integrated Stepper Motor is formed:

Downloads & Support
- User Manual: Current Stepper Motor Driver User Manual

- Debug Software: Debugging Software Download
More Information on detail, please feel free to contact me 
- Availability: In Stock
- Model: 420MA
- Brand: Adampower
