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
  • Specifications
  • 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 synchronization 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.



Maximum performance

  • 300% peak current performance pulse-duty overload
  • Optimized control loops for high dynamic performance
  • Up to 16 kHz switching frequency (default ratings specified at 8 kHz)
  • 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
  • Faster throughput due to position loop @ 250 μs and use of Real Time Motion over Ethernet (RTMoE)
  • Single drive with MCi210 can control multiple axes using RTMoE
  • Synchronized peer-to-peer communication over Ethernet
  • MCi modules execute comprehensive programs that can control multiple drives and motors simultaneously across real-time networks
  • Performance is optimized by having a motion controller embedded in each networked drive
  • Protocol as defined by IEEE1588 V2High speed network synchronisation of less than 1 μs jitter
  • Parallel interface with drive processor provides faster data exchange

Minimum size

  • 1.6 in (40 mm) drive width and option bracket adds 0.86 in (22 mm), providing a highly competitive maximum drive width of 2.44 in (62 mm)
  • MCi210 Machine Control module for 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 8 in (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 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)
  • Machine control over two segregated Ethernet networks enables greater flexibility in machine design

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 Safetyfunctional-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.
Learn More
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.
Learn More

Approval & Listings


USA and Canada (cUL Listed). UL File number: E171230


European Union (all applicable directives and regulations LVD, EMD, RoHS, REACH, Energy related products)


United Kingdom (all applicable regulations)


Australia and New Zealand (Responsible Supplier Registration No. E6934)


Russian Customs Union. All Digitax HD models

South Korea
Certificate Nos:


Functional Safety

Safe Torque Off function.

TÜV Rheinland Type Examination Certificates:
01/205/5270.02/17 (Unidrive-M and derivative products)
01/205/5409.02/21 (SI-Safety  option module)
01/205/5720.00/19 (MiS210, MiS250 option modules)

The safety function "Safe Torque Off" can be used in applications up to Cat 4. PL e according to EN ISO 13849-1, SIL 3 according to EN 61800-5-2/ EN 62061/ IEC 61508, and in lift applications according to EN 81-1 and EN81-2.

UL Functional Safety

Unidrive-M all products
File E171230     Vol. 11  Sec. 1 Issued:  2015-01-22
Compliance with specific requirements of NFPA 79 

Functional Safety
for Elevators

TÜV Nord certificates:
44 799 17002402 (Frequency converters with Safe Torque Off function for lift drives)


Quality system: ISO 9001 (Certificate Nos. FM 739405)
Environmental management system: ISO 14001 (Certificate No. EMS 739789)
Occupational health and safety: ISO 45001 (Certificate No. 5430)

China RoHS

Chinese Order No. 32, 2016; Administrative Measures for the Restriction of Hazardous Substances in Electrical and Electronic Equipment (China RoHS 2),

EPA TSCA regulations

All Commander and Uni-M products
U.S. Environmental Protection Agency (“EPA”) recently promulgated regulations under the Toxic Substances Control Act (“TSCA”)

IHM, Basel convention,

MEPC 68/21 / Add.1, Annex 17, Resolution MEPC.269(68) 2015 Guidelines for the development of the inventory of hazardous materials.

Responsible Minerals Initiative (RMI)

CMRT compliance


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.
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.
KI-Compact 485 Adaptor
This allows the drive to communicate via RS485. This is commonly used for programming if the drive has no keypad.


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

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

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

MCi200 system integration module 

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

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.


System Integration Modules - Additional I/O

 SI-IO System Integration Modules

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.


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*.

* Also requires KI-Compact-485 adaptor.


Case Studies



Product Catalog

Technical Documents, Software and Drawings


White Papers