7A 3-Phase Stepper Drive with Pulse/Dir Control

7A 3-Phase Stepper Drive for Open-Loop Motion

The 7A 3-Phase Stepper Drive 3DM3722 is rated for up to 7.0 A of output current from an 80-230 VAC supply. It is designed to drive 3-phase stepper motors in open-loop systems where a controller issues step and direction signals. Lyenwsin supplies this drive for CNC machines, packaging equipment, and industrial automation.

Control Interface

The drive accepts standard Pulse/Dir and CW/CCW pulse modes, so it integrates directly with CNC controllers and PLC pulse outputs. Because operation is open-loop, no encoder feedback or tuning loop is required, which shortens commissioning on multi-axis machines.

Protection and Smoothing

Integrated overcurrent, overvoltage, and undervoltage protection guard the drive and motor against supply and wiring faults. The output stage is tuned for low noise and vibration, producing smooth stepper motion that reduces mechanical stress on the axis.

Key Specifications

• Output current: max 7.0 A
• Supply voltage: 80-230 VAC
• Control modes: Pulse/Dir, CW/CCW pulse
• Protection: overcurrent, overvoltage, undervoltage
• Operation: open-loop, low noise and vibration

Target Applications

It is suited to industrial automation, packaging machinery, compact CNC equipment, robotics, automated handling mechanisms, textile machinery, printing machinery, and food processing. The wide AC supply range supports both 110 V and 220 V line regions without extra hardware.

System Selection

Match the drive to a 3-phase stepper motor whose per-phase current falls within the 7.0 A capacity. Confirm the motor winding voltage constant suits the available AC line so the drive can supply adequate current at the target speed. Lyenwsin can recommend compatible 3-phase stepper motors for your axis.

Distributor Support

Lyenwsin keeps the 3DM3722 in stock with matched 3-phase motors and provides torque-speed data, wiring guidance, and configuration support so the drive can be deployed quickly on CNC and automation axes. Our team also assists with selecting the correct motor for the available AC line voltage.