Stepper motor driver DP3C

Overview
The DP3C series closed-loop bus type stepper driver complies with the CiA402 standard and supports up to 32 axes. Using EtherCAT bus communication, the master–slave cycle can reach 1 ms for a 32-axis system. Closed-loop control with encoder feedback eliminates step loss and the updated control algorithm improves dynamic performance, thermal behaviour and high-speed stability. Typical applications include electronics, laser equipment, robotic arms and photovoltaic tracking systems.

Key features

• Closed-loop control using encoder feedback to compensate position deviation and eliminate step loss.
• New-generation control algorithms for smoother motion and reduced temperature rise.
• EtherCAT bus with advanced control to increase torque and improve high-speed motor performance (up to 2000 rpm, application dependent).
• Supports COE protocol and complies with CiA402; compatible with standard EtherCAT masters and up to 32 axes.
• Fast communication: master–slave cycle up to 1 ms for 32 axes.
• Simplified wiring: replaces pulse/direction lines with a network cable; integrates power and encoder lines to reduce cabling and maintenance.
• High reliability and noise immunity: low bus load and point‑to‑point physical layer reduce interference and increase system robustness.
• Rich I/O: 7 inputs and 7 outputs supporting probe, alarm, position output, positive/negative limits, origin input and brake output.

Applications

• Multi-axis control systems
• Robotic arms and automation equipment
• Photovoltaic tracking and solar equipment
• Electronics manufacturing and laser processing machines

Technical specifications

• Standard compliance: CiA402
• Protocol support: COE (over EtherCAT)
• Maximum axes supported: 32 axes
• Master–slave communication cycle: up to 1 ms (for 32 axes)
• Control: closed-loop with encoder feedback to eliminate step loss
• Maximum motor speed performance: up to 2000 rpm (depending on motor and application)
• Inputs/Outputs: 7 signal inputs and 7 signal outputs (probe, alarm, position, limits, origin, brake, etc.)
• Communication interface: EtherCAT bus (simplified wiring, improved anti-interference)