Open-loop Stepper Driver (3 Phase)

3-Phase Open-Loop Stepper Drivers for Industrial Motion

Runcin 3-phase open-loop stepper drivers provide smooth control for medium- and high-power automation equipment. The category includes three digital models for different motor frames, supply voltages and pulse requirements. Therefore, machine builders can select a suitable driver for compact equipment or larger industrial systems.

Three-phase control can deliver smoother rotation and strong torque at higher speeds. In addition, DSP-based algorithms help reduce vibration and operating noise. Motor parameter auto-tuning also simplifies commissioning by matching the driver to compatible motors.

Low-Voltage Control for Small and Medium Equipment

The R3D2380 three-phase stepper driver accepts DC 20–50V input and delivers up to 8A peak current. It supports 57 and 86 frame three-phase motors. Moreover, engineers can select subdivisions from 200 to 10000 pulses per revolution, while the pulse response reaches 200kHz.

The driver uses pulse-and-direction control and includes automatic motor parameter tuning. It also provides overcurrent and overvoltage protection. As a result, it offers a practical solution for small and medium machines.

High-Voltage Drivers for Larger Stepper Motors

The R3D3470 open-loop stepper driver supports AC 110–280V input and up to 7A peak current. Its subdivision range reaches 60000 pulses per revolution, while the pulse response reaches 1MHz. Therefore, it suits larger motors and high-speed command systems.

The R3D4270 digital driver offers the same voltage and current class. Its 32-bit DSP design and selectable pulse input modes help improve control reliability in demanding environments.

These drivers suit CNC equipment, cutting machines, engraving systems and automated production lines. Before selecting a model, compare motor current, frame size, supply voltage and pulse frequency. Also confirm the required subdivision and protection functions.

Browse the complete 3-phase open-loop stepper driver range. You can also compare the main stepper drive series, 3-phase closed-loop drivers and 2-phase open-loop drivers.

Choose Runcin three-phase drivers for smooth motion, flexible configuration and dependable OEM integration.