Digitax HD M751 Base

Base drive for configuration flexibility

Digitax HD M751 Base

Base servo drive for configuration flexibility

Digitax HD M751 Base servo drive offers configuration flexibility with two option slots for functionality extension and customization.

With built-in RS485 communications, Digitax M751 also features an on-board Advanced Motion Controller for distributed 1.5 axis motion control.

  • Features
    Maximum performance
    • 300% peak current performance pulse-duty overload
    • Optimized control loops for high dynamic performance
      • 62.5 μs current loop
      • 250 μs position and speed loop
    • Up to 16 kHz switching frequency
    • Supports a wide range of feedback technologies including Quadrature, SinCos (including absolute), SSI, BiSS, EnDat (up to 4 Mb with EnDat 2.2) and resolvers
    • Maximum performance package with high torque density, low inertia Unimotor hd servo motors
    • Analog and pulse/direction control for centralised motion
    • Advanced 1.5 axes Motion Controller, key features include:
      • Real-time tasks
      • 250 μs cycle time
      • Motion profile generator
      • Electronic gearbox
      • Interpolated CAM
      • 2Homing functions
      • High speed position freeze

    Minimum size
    • 40 mm drive width and option bracket adds 22 mm, providing a highly competitive maximum drive width of 62 mm
    • Reduce cabinet height by directly stacking rows of drives. Patented Ultraflow™ technology expels heat directly outside of the cabinet through the rear of the drive (drive heat dissipation can also be achieved via vents on the top of the drive, as standard).
    • Fits into cabinets just 200 mm deep

    Easy installation and setup
    • DIN rail alignment
    • Kits for easy multi-axis installation
    • Single motor cable and electronic motor name plate for fast set up
    • Seamless motor-drive pairing with Unimotor hd servo motors
    • Easy access pluggable connectors
    • Rapid commissioning with the Unidrive M Connect PC tool and SD cards
    • Machine Control Studio provides a flexible and intuitive environment for programming automation and motion control features
      • Programmable with IEC61131 standard languages

    • Two option slots for functionality extension and customization (see available option modules)
    • Built-in RS485 communications

    Safety on-board
    • Improved productivity with machine safety
      - Integrated dual Safe Torque Off
      - Meets SIL3 (Safety Integrity Level 3) and PLe (Performance Level e)
  • Options

    Option Modules

    System Integration Modules - Feedback
    SI-Encoder Feedback System Integration Module


    Quadrature encoder input interface module.

    SI-Universal Encoder Feedback System Integration Modules

    SI-Universal Encoder

    Encoder input and output interface supporting Quadrature, SinCos, EnDat and SSI encoders.

    System Integration Modules - Communications
    Connects Unidrive, Commander, Digitax and the Pump Drive families to all POWERLINK networks. SI-POWERLINK serves applications ranging from simple open-loop systems through to those demanding precise motion control. The protocol is based upon standard Ethernet and provides a solution for real-time Industrial Ethernet to satisfy the requirements of industrial automation and process control.

    SI-Profibus Communication System Integration Modules


    SI-PROFIBUS interface module enables follower connectivity. It is possible to use multiple SI-PROFIBUS modules or a combination of SI-PROFIBUS and other option module types to add additional functionality such as extended I/O, gateway functionality or additional PLC features.

    SI-Devicenet Communications System Integration Module


    SI-DeviceNet enables follower connectivity. It is possible to use multiple SI-DeviceNet modules to provide additional functionality.

    SI-CANopen Communication System Integration Module


    Digitax HD's SI-CANopen interface module supports various profiles, offering optimum flexibility.

    SI-Ethernet Communication System Integration Module


    SI-Ethernet can be used to provide high speed drive access, global connectivity and integration with IT network technologies. 

    SI-EtherCAT Communications System Integration Module


    SI-EtherCAT allows Digitax HD servo drive to connect and interface with EtherCAT networks.

    SI-Profinet Communications System Integration Module 


    SI-PROFINET allows Digitax HD to communicate and interface with PROFINET PLCs and networks.



    Interbus interface modules.

    System Integration Modules - Applications

    MCi210 System Integration Module with a dual port Ethernet


    Extended advanced machine control, provides MCi200 functionality with additional ports and simultaneous connectivity to 2 separate Ethernet networks.

    MCi200 system integration module


    Second processor, providing advanced customization using industry standard IEC61131-3 programming languages.

    SI-Apps Compact System Integration Modules

    SI-Apps Compact

    Compatible module allows legacy SyPTPro application programs to be re-complied for HD.

    System Integration Modules - Additional I/O

    SI-IO System Integration Module


    Extended I/O interface module to increase the number of I/O points on a drive. Provides additional: 4 x Digital I/O, 3 x Analog inputs (default)/Digital inputs, 1 x Analog output (default)/Digital input, 2 x Relays.


    KI Compact Display Option module for servo drive

    KI-Compact Display

    The display (fitted on M753 & M750, optional on M751) ensures access to drive diagnostics even in the absence of network connectivity. Includes 2 rotary switches for hardware setting of the node address for faster commissioning of the motion network.


    KI-Compact 485 Adaptor

    This allows the drive to communicate via RS485. This is commonly used for programming if the drive has no keypad.


    Remote Keypad RTC

    The keypad is remote mountable, allowing flexible mounting on the outside of a panel (meets IP54/NEMA 12). Three line plain text, multi-language LCD keypad for rapid set-up and helpful diagnostics. Battery operated real-time clock allows accurate time stamping of events, aiding diagnostics.

    Drive interface units - Communications
    control techniques usb cable

    CT USB Communications Cable

    The USB Communications cable allows the drive to connect to a PC for use with our PC tools*.

    digitax m75c capshare servo

    Digitax M75C CapShare

    Capacitor module (200 V and 400 V) with thermal protection to increase maximum energy storage capacity, and optimise energy efficient usage.


    For the complete list of accessories, please see the Digitax HD brochure.

    * Also requires KI-Compact-485 adaptor.

  • Software

    Commissioning and monitoring software


    Connect - Commissioning tool
    Based on Control Techniques’ 25 years' experience, Connect is our latest drive configuration tool for commissioning, optimizing and monitoring drive/system performance.

     Automation and motion programming software

    Machine-Control-Studio Machine Control Studio - Programming tool
    Control Techniques' Machine Control Studio provides a flexible and intuitive environment for programming Digitax HD’s new automation and motion control features.
  • Downloads
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