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MC4Unt EtherCAT Master Motion Controller
EtherCAT Master Motion Controller with up to 8 Integrated Servo Drives

The MC4Unt Control Module is a modular, configurable control system consisting of a motion controller, power supply, and drives. It is designed to meet the needs of OEMs with demanding multi-axis motion control applications. Its unique multi-processor architecture leverages powerful profile generation and servo control algorithms to maximize motion system performance. At the same time, its universal servo drive technology allows the system designer to control almost any type of motor or stage. As an EtherCAT master, it controls any ACS products within the SPiiPlus Platform and 3rd party EtherCAT products.

Key Specs and Capabilities

Key Specifications

  • Controller Axes: 2, 4, 8, 16, 32, or 64
  • Host PC/PLC/PAC Communication: TCP/IP, Ethernet/IP, Modbus, RS-232
  • Max EtherCAT Cycle Rate: 5kHz
  • Drive Axes: Up to 8
  • Drive Supply Input: 85-400 Vac (range depends on supply module selected)
  • Bus Voltage: 24-320 Vdc (value depends on supply module selected)
  • Max Current Output Per Axis: 45/90 A up to 4 axes, 20/40 A up to 8 axes (22-inch enclosure)
  • Encoder Channels: Max 8 any combination (8 AqB, 8 SinCos, 4 Absolute)
  • Enclosure Widths: 9, 11, 19, or 22 inches
  • Functional Safety Options: STO
  • Proprietary ACS Feature Options: ServoBoost, NanoPWM, NetworkBoost, MotionBoost, Flexible Configuration


Key Capabilities

  • Controller Application Development
  • Host Application Development
  • Motion Profile Generation
  • Servo Control and Drive Technology
  • Motion-to-Process Synchronization
  • PLC and PAC Integration
  • Machine Safety and Uptime

Technical Resources


MC4Unt Controllers Datasheet

MC4U LDM Datasheet

MC4U PWM Datasheet

MC4U PS Datasheet


MC4U UL Certificate of Conformity

MC4U CE Certificates of Conformity

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CAD Files

MC4U 9 inch 3D STEP Model

MC4U 11 inch 3D STEP Model

MC4U 19 inch 3D STEP Model

MC4U 22 inch 3D STEP Model


MC4Unt Installation Guide

LDM3U Installation Guide

Software Downloads

SPiiPlus ADK Suite