Unidrive M Modular

Flexible and reliable high-power solutions

​Unidrive M High Power Modular Drives

125 hp – 4,200 hp (90 kW – 2.8 MW)

200 V | 400 V | 575 V | 690 V

Unidrive M’s modular drive offering provides a flexible method of building compact, reliable high-power solutions.

Paralleled together, Unidrive M can control asynchronous and permanent magnet motors in systems up to 2.8 MW (4,200 hp).

  • Features

    Minimize downtime for critical operations

    • Unidrive M high power modules have exceptional build quality based on over 40 years' of drive knowledge, expertise and development
    • Nidec Automation Centers are situated in all global regions to provide local design consultation and rapid specialist technical support

    Reliability assured

    • Every Unidrive M high power module has been thoroughly tested in environmental chambers that cycle a wide range of load and thermal conditions
    • PCBs have conformal coating to further increase resilience to harsh environmental conditions
    • Trip avoidance features take intelligent action instead of interrupting critical processes
    • Protection alarms safeguard the wider system
    • Intelligent variable speed fans ensure operating temperature stays within limits
    • Wide supply voltage tolerance keeps drive operation smooth in areas where supplies are variable

    Create flexible systems easily

    • The modular approach to building high power systems provides machine builders with flexibility while keeping complexity low
    • Modules with integrated rectifiers and/or line chokes can be easily paralleled
    • Separate inverter and rectifier modules (D, RECT..A and RECT..T) can be paralleled into common DC bus and regenerative configurations

    Flexible and easy system design

    • Unidrive M high power modules are designed to fit in standard 600 mm deep x 400 mm wide (23.6 x 15.7 in) cubicles
    • 6,12,18 and 24 pulse input and Active Front End configurations are easy to achieve
    • Integrated cooling fan power supply means no additional power supplies are required
    • Output current ratings have been increased to use fewer modules per system
    • A common control interface ensures a consistent programming method and feature set across the whole Unidrive M range

    Make compact, easily maintainable systems

    • Overall system size and footprint is kept to a minimum
    • Manageable small and light modules are maintained and replaced rapidly and easily

    Reduce spares inventory

    Unidrive M’s modular approach gives customers the opportunity to standardize their solutions in order to keep spares holding to a minimum as different systems can be serviced using one common spare. Large volumes of standard product modules are stocked at local distribution hubs in convenient locations around the world meaning that rapid delivery is always available to all customers.

    Upgrade Unidrive SP modular systems painlessly

    Migration of Unidrive SP modular systems to Unidrive M is fast and easy:

    • Parameter porting tools such as Unidrive M Connect and Smartcard are available
    • SyptPro can recompile SM-Applications programs for SI-Applications, and can connect to existing CTNet networks
    • Identical width and depth dimensions, along with retrofit kits, mean that Unidrive M modules can easily fit into SP modular locations using existing fittings

    Environmental safety and electrical conformance

    • UL listed
    • Electromagnetic immunity complies with EN 61800-3 and EN 61000-6-2
    • Electromagnetic emissions comply with EN 61800-3:
      • Onboard EMC filter, category C3
      • Optional external EMC filter, category C2 depending on power rating
      • Compliance with EN 61000-3-12 with external line reactor

    Create high performance solutions

    • Switching frequencies of up to 16 kHz in systems up to 160 kW (250 hp) and 8 kHz in systems up to 250 kW (400 hp) allow Unidrive M to provide precision torque
    • Highly accurate thermal model ensures:
      • High overload capability – 150% Heavy Duty
      • Impressive low derating requirement in applications that demand high torque at low speeds. Power device temperature is intelligently managed meaning smaller lower priced systems can be specified and product life is extended
    • Dynamic Active Front End configurations provide:
      • Precision torque linearity across quadrants
      • Corrective power factor operation (lagging, unity or leading) for high quality power
      • Harmonic mitigation
  • Specifications
    Key data
    • Heavy Duty rating: 125 hp – 4,200 hp (90 kW – 2.8 MW)
    • Supply phases: 3 phase

    Standard features


    • Onboard PLC
    • Advanced Motion Controller (applicable to M700, M701 & M702)

    Onboard comms:

    • M700 & M702 – Ethernet
    • M600 & M701 – RS485


    • M700 & M702 – 2 x Encoder inputs
    • M700, M701 & M702 – 1 x Simulated encoder output

    Machine safety:

    • M600, M700 & M701 – 1 x Safe Torque Off (STO) terminal
    • M702 – 2 x STO terminals
    • SIL3/PLe compliant


    • No keypad as standard

    Option slots:

    • 3

    Parameter cloning via:

    • PC tools
    • Smartcard
    • SD card



    100 V (100 V - 120 V ± 10%)


    200 V (200 V - 240 V ± 10%)

    400 V (380 V - 480 V ± 10%)

    575 V (500 V - 575 V ± 10%)

    690 V (500 V - 690 V ± 10%)



    Open-loop vector or V/Hz induction motor control

    Open-loop Rotor Flux Control for induction motors (RFC-A)

    Open-loop permanent magnet motor control (RFC-S)

    Closed-loop Rotor Flux Control for induction motors (RFC-A)

    Closed-loop permanent magnet motor control (RFC-S)

    Active Front End (AFE) power quality convertor









    1108 x 310 x 290 43.62 x 12.21 x 11.4
    9E | 9T 1069 x 310 x 290 42.1 x 12.2 x 11.4

    10E | 10T

    1069 x 310 x 290 42.1 x 12.2 x 11.4

    11E | 11T

    1242x 310 x 312 48.9 x 12.2 x 12.3


    773 x 310 x 290 30.4 x 12.2 x 11.4


    773 x 310 x 290 30.4 x 12.2 x 11.4


    863 x 310 x 312 34 x 12.2 x 12.3


    6 pulse

    355 x 310 x 290

    6 pulse

    15.8 x 12.2 x 11.4

    11A | 11T

    6 pulse

    415 x 310 x 290

    12 pulse

    415 x 310 x 290

    6 pulse

    16.3 x 12.2 x 11.4

    12 pulse

    16.3 x 12.2 x 11.4


    Dimensions include mounting brackets.

  • Options
     CI Keypad LCD

    Remote keypad

    All the features of the CI-Keypad LCD, but remote mountable. This allows flexible mounting on the outside of a panel and meets IP66 (NEMA 4)

    KI keypad


    Plain text, multi-language LCD keypad with up to 4 lines of text for in depth parameter and data descriptions, for enhanced user experience

    KI keypad RTC

    KI-Keypad RTC

    All the features of the KI-Keypad, but with battery operated realtime clock. This allows accurate time stamping of events, aiding diagnostics.

    System Integration Modules - Feedback
    SI Encoder


    Quadrature encoder input interface module.

    SI Universal encoder

    SI-Universal Encoder

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

    System Integration Modules - Communications 
    SI Profibus interface module


    PROFIBUS interface module

    Si Devicenet


    DeviceNet interface module

    SI Canopen


    CANopen interface module supporting various profiles, including several drive profiles



    Ethernet module that supports EtherNet/IP and Modbus TCP/IP



    PROFINET RT interface module


    EtherCAT interface module

    System Integration Modules - Applications


    Second processor module, which allows SyPTPro application programs to be re-compiled for Unidrive M700.


    Second processor, providing advanced machine control using Machine Control Studio.


    Adds to the MCi200 with a dual port Ethernet interface directly on the processor and additional I/O

    System Integration Modules - Additional I/O
    SI I/O


    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

    System Integration Modules - Safety


    An intelligent, programmable module to meet the IEC 61800-5-2/ISO 13849-1 functional safety standard up to SIL3/PLe.

    Drive Interface Units - Backup


    Smartcard memory device to backup and copy parameter sets and basic PLC programs.

    SD Card Adaptor

    Allows an SD card to be inserted into the Smartcard slot, for parameter backup cloning and application programs.

    Drive interface units - Communications

    KI-485 Adaptor

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

    CT-USB Comms cable

    The USB Comms cable allows the drive to connect to a PC for use with Unidrive M's PC tools.

  • Software
    Commissioning and monitoring software

    Unidrive M Connect - Commissioning tool

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

    Automation and motion programming software

    Machine Control Studio - Programming Tool

    Control Techniques Machine Control Studio provides a flexible and intuitive environment for programming Unidrive M’s new automation and motion control features

  • Downloads
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