Unidrive HS70
Unidrive HS70 AC Drives
0 - 3,000 Hz Open-Loop | 0 - 1,250 Hz Closed-Loop
1.0 - 4,200 hp (0.75 kW – 2.8 MW) Normal Duty
1.5 hp – 4,200 hp (1.0 kW – 2.8 MW) Heavy Duty
208 - 240 V | 380 - 480 V
  • Overview
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Control Techniques’ Unidrive HS70 series high-speed variable frequency AC/Servo drives deliver enhanced control of high speed motors. Additionally, machine throughput is maximized through enhanced single axis control and multi-axis network synchronization. Onboard real-time Ethernet (IEEE 1588 V2), onboard Advanced Motion Controller, and high speed I/O for position capture enables machine builders to create more sophisticated and flexible machines.

The onboard Ethernet is also compatible with EtherNet/IP, Modbus TCP, and Real-Time Motion over Ethernet (RTMoE) for network flexibility.

To meet the needs of any application Unidrive M700 series is available in three variants:

  • Unidrive HS70: Onboard Ethernet and single STO input
  • Unidrive HS71: Onboard RS485 to upgrade from Unidrive SP, single STO input
  • Unidrive HS72: Onboard Ethernet, dual STO inputs



Maximize throughput with superior motor control

  • High bandwidth motor control algorithm for open and closed loop induction, synchronous permanent magnet, and servo motors with up to 3,000 Hz current-loop bandwidth and 250 Hz speed loop bandwidth for smooth, efficient motor control
  • Flexible speed and position feedback interface supports a wide range of feedback technologies from robust resolvers to high resolution encoders

Optimize system performance with onboard Advanced Motor Controller

  • Unidrive HS70 series incorporates an Advanced Motion Controller capable of controlling 1.5 axes. The motion functions are carried out 'on the drive' so that system performance is maximized

Design flexible centralized and decentralized control systems

  • MCi modules can be added to execute larger programs for advanced system control capability and can operate as network control masters
  • Onboard PLC for logic programs reduce or eliminate the need for external controllers
  • Machine Control Studiois an industry standard IEC61131-3 programming environment for efficient system design and configuration used to program the onboard PLC and the co-processor MCi module
    • Complete IEC 61131-3 programming environment Structured text (ST), function block (FBD), sequential function chart (SFC), ladder diagram (LD), instruction list (IL), and continuous function chart (CFC)
  • Three System Integration module slots are available to fit additional fieldbus, Ethernet, position feedback, machine control, and expanded I/O options.

Unidrive HS70 and Unidrive HS72 onboard communications

  • Integrated dual port Ethernet switch provides simple connectivity using standard connections
  • Onboard real-time Ethernet (IEEE 1588 V2) uses RTMoE (Real Time Motion over Ethernet) to provide fast communication and accurate axis synchronization
  • Onboard Ethernet supports EtherNet/IP and Modbus TCP communications

Unidrive HS71 onboard communications

  • Integrated dual port RS485 provides Modbus RTU connectivity using standard connections

Conform to safety standards, maximize uptime and reduce costs by integrating directly with safety systems

  • Unidrive HS70 and Unidrive HS71 has an integrated Safe Torque Off (STO) input and can accommodate an SI-Safety module for safe motion functions; Unidrive HS72 variant has dual Safe Torque Off (2x STO)



  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

Key data

Single drive Heavy Duty ratings:

  • 230 V: 1.0 hp to 50 hp (0.75 kW to 37 kW)
  • 460 V: 1.0 hp to 125 hp (0.75 kW to 75 kW)

Single drive Normal Duty ratings:

  • 230 V: 1.5 hp to 60 hp (1.1 kW to 45 kW)
  • 460 V: 1.0 hp to 150 hp (0.75 kW to 90 kW)

Modular drive ratings:

  • 125 hp to 4,200 hp (1.0 kW to 2.8 MW)

Control connections: Variant dependent

  • Unidrive HS70 and Unidrive HS71 models: 3 x Analog inputs, 3 x Digital inputs, 2 x Analog outputs, 3x Digital I/O, 1 STO, 1 x Relay
  • Unidrive HS72 model: 3 x Digital inputs, 3 x Digital output, 2 x STO, 1 x Relay

Feedback: 2 x Encoder inputs, 1 x simulated encoder output

Intelligence: Onboard PLC and Advanced Motion Controller (AMC)

Onboard communications: Variant dependent

  • Unidrive HS70 and Unidrive HS70 models: Ethernet (EtherNet/IP, Modbus TCP, RTMoE)
  • Unidrive HS71 model: RS485 (Modbus RTU)

Machine Safety: Variant dependent, SIL3/PLe compliant

  • Unidrive HS70 and Unidrive HS71 models: Single Safe Torque Off terminal
  • Unidrive HS72 model: Dual Safe Torque Off terminals

Keypad: No keypad (standard)

  • KI-KEYPAD-LCD: Plain-text, multi-language LCD keypad for in-depth parameter and data descriptions for enhanced user experience
  • KI-KEYPAD-RTC: All the features of KI-Keypad-LCD, plus a battery operated real-time clock which allows accurate time stamping of events, aiding diagnostics
  • REMOTE-KEYPAD: Remote mountable, plain-text, multi-language LCD keypad allows flexible mounting outside of a panel and meets IP66 (NEMA 4)
  • REMOTE-KEYPAD-RTC: The keypad is remote mountable, enabling 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.

System Integration options slots: 3

Parameter cloning: PC tools, SMARTCARD, and 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


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 Unidrive-M models

Functional Safety

Safe Torque Off function.
TÜV Rheinland Type Examination Certificates (includes HS70, HS71 and HS72):
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 Unidrive-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

Weights & Dimensions










382 x 83 x 200 15.0 x 3.3 x 7.9 4.5 Max 9.9 Max


391 x 124 x 200 15.4 x 4.9 x 7.9 6.5 14.3


391 x 143 x 200

15.4 x 5.6 x 7.6




391 x 210 x 227 15.4 x 8.3 x 8.9 14 30.9


557 x 270 x 280 21.9 x 10.6 x 11.0 28 61.7


803 x 310 x 290 31.6 x 12.2 x 11.4 52 114.6

All dimensions include mounting brackets











1108 x 310 x 290 43.62 x 12.21 x 11.4 66.5 146.6

9E | 9T

1069 x 310 x 290 42.1 x 12.2 x 11.4 46 | 60 101.4 | 132.3

10E | 10T

1069 x 310 x 290

42.1 x 12.2 x 11.4

46 | 60

101.4 | 132.3 

11E | 11T

1242x 310 x 312 48.9 x 12.2 x 12.3 63 | 65 138.9 | 143.3



773 x 310 x 290 30.4 x 12.2 x 11.4 34 75


773 x 310 x 290 30.4 x 12.2 x 11.4 34 75


863 x 310 x 312 34 x 12.2 x 12.3 42 92.6



6 pulse

355 x 310 x 290

6 pulse

15.8 x 12.2 x 11.4

12 26.5

11A | 11T

6 pulse


12 pulse


6 pulse


12 pulse


21 | 23 46.3 | 50.7

All dimensions include mounting brackets

Drive variants

 Unidrive HS70 Advanced Motion Controller

Unidrive HS71 – Onboard Modbus RTU

Unidrive HS71 has dual RS485 ports for onboard Modbus RTU communications.

 vfd with Advanced Motion Controller

Unidrive HS72 – Onboard Ethernet, Dual Safe Torque Off

Unidrive HS72 has dual STO inputs for applications that require onboard Ethernet and enhanced safety to comply with SIL3 or PLe.


Control Techniques Remote Keypad
Remote keypad

Remote mountable, three line, plain text, multi-language LCD keypad for rapid setup and helpful diagnostics maximizes machine up-time. This allows flexible mounting on the outside of a panel and meets IP66 (NEMA 4); requires RS485 connection.


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



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 

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


System integration modules - feedback

Quadrature encoder input interface module

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

PROFIBUS interface module

SI-Devicenet Communications System Integration Module

DeviceNet interface module

SI-CANopen Communication System Integration Module

CANopen interface module

SI-Ethernet Communication System Integration Module

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

SI-EtherCAT Communications System Integration Module 

EtherCAT interface module

SI-Profinet Communications System Integration Module   SI-PROFINET
PROFINET interface module

System integration modules - applications

SI-Application System Integration Module

SI-Applications Plus
Compatible module which allows existing SyPTPro application programs to be re-compiled for M700

MCi200 system integration module

Second processor, providing advanced machine control using Machine Control Studio

MCi210 System Integration Module with a dual port Ethernet

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

System integration modules - additional 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



MiS210 safety option for Unidrive 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.

Drive interface units - back-up

The optional Smartcard memory device can be used to back-up parameter sets, as well as copying them from one drive to another
  SD Card Adaptor
Conversion device that allows an SD card to be inserted into the Smartcard slot, for parameter 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*

* Also requires an adaptor.


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