Digitax HD M754 MCi
Servo AC Drive
1.5 A – 16 A with 48 A peak
200 V 400 V | 0.25 kW - 7.5 kW
  • Overview
  • Options
  • Downloads

Servo drive and controller in one

A powerful MCi second processor onboard the Digitax M754 servo drive brings a whole host of machine design opportunities.

The onboard MCi processor executes comprehensive programs that can control multiple drives and motors simultaneously across real-time networks.

Onboard Ethernet using RTMoE (Real Time Motion over Ethernet) provides synchronisation and communication between drives using the Precision Time Protocol (PTP) as defined by IEEE1588 V2.

Simple integration with external components such as Remote I/O, HMIs and PLCs can be achieved with Modbus TCP/IP on the integrated 2-port standard Ethernet switch.


One servo system for ALL your automation needs



Integrated machine controller

Run on-board application programs up to four times faster than a standard PLC.
Control multiple drives across the network for perfectly synchronised multi-axis machine performance.   

Machine Control Studio

Machine Control Studio (MCS) is a flexible and intuitive environment for programming automation and motion control. Fully IEC 61131-3 compliant, it supports Function Block Diagram (FBD), Structured Function Chart (SFC), LadderDiagram (LD), Instruction List (IL), Continuous Function Chart (CFC) and Structured Text (ST) with intuitive IntelliSense functionality.   

Modbus TCP/IP master

Simple integration with external components such as Remote I/O, HMIs and PLCs can be achieved with Modbus TCP/IP on the integrated 2-port standard Ethernet switch. 



Maximum performance

  • 300% peak current performance pulse-duty overload
  • Optimised control loops for high dynamic performance
    • 62.5 μs current loop
    • 250 μs position and speed loop
  • Up to 16 kHz switching frequency (default ratings specified at 8 kHz)
  • Supports a wide range of feedback technologies including EnDat 2.2, Hiperface SinCos, Incremental Quadrature, SinCos, BiSS-C, SSI, Resolvers and others
  • Maximum performance package with high torque density, low inertia Unimotor hd servo motors

RTMoE (Real-Time Motion over Ethernet) for high-speed synchronised communication between drives

  • Distributed clocks to synchronise position, speed and current loops across drives
  • Precision Time Protocol as defined by IEEE1588 V2
  • High speed network synchronisation of less than 1 μs jitter (typically <200 ns)

Powerful MCi second processor for decentralised motion applications

  • Runs application programs up to four time faster than a standard PLC
  • Integrates with the onboard AMC (Advanced Motion Controller) to carry out motion functions at the drive’s 250 μs cycle time
  • Can coordinate multiple drives over the Ethernet network, providing perfectly synchronised multi-axis machine performance
  • Programs are fast and easy to develop thanks to the user-friendly Machine Control Studio software which uses industry standard IEC61131-3 programming languages


Minimum size

  • 40 mm drive width – 25 drives (up to 16A each) can fit in just 1 meter of cabinet space  
  • Bring space reduction to the same level with complete standalone capability, removing the need for an external controller
  • 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 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 Ethernet ports with an internal switch
  • Built-in RS485 communications
  • Extends connectivity with 3 x digital inputs, 1 x digital output and 1 x digital I/O
  • Modbus TCP/IP master (up to 5 nodes)
  • Full onboard programmability

Safety on-board

  • Reduced downtime with machine safety
    - Integrated dual safe torque off
    - Meets SIL3 (Safety Integrity Level 3) and PLe (Performance Level e)


Functional Safety

All Digitax HD drives have integrated dual Safe Torque Off (STO) inputs, certified to SIL3 / PLe, providing an elegant and reliable safety solution. 
The addition of an MiS250 safety option extends the built-in STO with the ability to safely monitor and/or restrict the scope of motion. 
Safety functions include: STO, SBC, SOS, SS1, SS2, SLS, SSM, SLA, SDI, SLP & SES
For maximum flexibility in the safety system architecture, the modules support both wired and network safety connections: CIP-Safety on EtherNet/IP and Safety over EtherCAT (FSoE).
To find out more, visit our Functional Safety page.



  Connect - intuitive commissioning software
Connect is our latest drive configuration tool for commissioning, optimising and monitoring drive/system performance.
machine-control-studio-icon  Machine Control Studio - programming tool
Control Techniques' Machine Control Studio provides a flexible and intuitive environment for programming new automation and motion control features.



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.

ORDER CODE: 82400000019600

KI Compact Display Option module for servo drive
KI-Compact Display
The display (fitted on M753, 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. 

ORDER CODE: 82700000020400

KI-Compact 485 Adaptor
This allows the drive to communicate via RS485. This is commonly used for programming if a keypad or KI-Compact Display is not ordered with the drive.

ORDER CODE: 82700000020300

Integration Products

Remote I/O
Industrial control applications typically use a PLC system to manage the process; using I/O to provide an interface to switches, relays and sensors attached to the machine.

RTMoE & MODBUS TCP Network Adapter ORDER CODE - IO210-BC

EtherCAT Network Adapter ORDER CODE - IO211-BC

System Integration Modules - Feedback

Quadrature encoder input interface module.

ORDER CODE: 82400000018100

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

ORDER CODE: 82400000018300

System Integration Modules - Communications

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.

ORDER CODE: 82400000017500


SI-POWERLINK serves applications ranging from simple open-loop systems through to those demanding precise motion control.

ORDER CODE: 82400000021600

SI-Devicenet Communications System Integration Module

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

ORDER CODE: 82400000017700

SI-CANopen Communication System Integration Module

SI-CANopen interface module supports various profiles, offering optimum flexibility.

ORDER CODE: 82400000017600

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. 

ORDER CODE: 82400000017900

SI-EtherCAT Communications System Integration Module

SI-EtherCAT allows the drive to connect and interface with EtherCAT networks.

ORDER CODE: 82400000018000

SI-Profinet Communications System Integration Module  SI-PROFINET
SI-PROFINET allows the drive to communicate and interface with PROFINET PLCs and networks.

ORDER CODE: 82500000018200



SI-INTERBUS 2MBb               

SI-INTERBUS for easy integration to the Interbus fieldbus in applications that use or drives

ORDER CODE: 82400000021220

ORDER CODE: 82400000021230

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 Analogue inputs (default)/Digital inputs, 1 x Analogue output (default)/Digital input, 2 x Relays.

ORDER CODE: 82400000017800

SI-I/O 24 plus
The SI-I/O 24 Plus option module provides a plug in high density I/O expansion solution for Unidrive and Digitax HD. Features include:
16 x Digital Inputs (8 high speed), 8 x Digital Outputs and an Incremental Encoder Input (AB Servo).
A High Density DIN rail mounted screw terminal breakout board and cable is available to provide easy connection to the module.

System Integration Modules - Applications

SI-Apps Compact
Compatible module allows SyPTPro application programs to be re-complied for HD.

ORDER CODE: 82400000020700

MCi200 system integration module
Second processor, providing advanced customization using industry standard IEC61131-3 programming languages.

ORDER CODE: 82400000017000

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.

ORDER CODE: 82400000016700

PTi210 PowerTools Integration Module
PTi210 allows setup of complex servo motion control applications within minutes

ORDER CODE: 82400000021400

System Integration Modules - Safety



MiS250 safety option extends the built-in STO with motion safety capability and enables decentralised flexibility with the option of safety over ethernet connectivity.

To find out more, visit our Functional Safety page.

ORDER CODE: 82400000021100

Optional Accessories

RS485 USB Communication Cable
USB to EIA485 Communications Converter Cable
The USB comms cable allows the drive to connect to a PC for use with our PC tools*.

ORDER CODE: 4500-0096

                 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.

* Also requires KI-Compact-485 adaptor


Case Studies



Product Catalogue

Technical Documents and Software


White Papers