Commander SK - General Purpose AC Drive

Compact, easy to use AC drive for a wide range of applications

Commander SK

0.25 kW - 132 kW (0.33 hp - 200 hp)

100V / 200V / 400V / 575V / 690V

Commander SK is easy to use and offers great value. The drive modules are compact and offer excellent motor control.

With onboard intelligence, I/O, Ethernet and fieldbus communications options, Commander SK allows you to do far more than you would expect from a standard open loop drive.

  • Features

    A simple drive to solve the widest range of applications

    Commander SK simplifies the installation and configuration of the drive, saving time, yet has the performance and depth of functions required to solve more complex applications than other drives in its class. Key features include:

    Easy to maintain

    Optional Smartstick allows drive settings to be stored, backed-up and easily re-loaded


    Option modules for Fieldbus and Ethernet connectivity, real-time-clock and additional I/O


    Minimize inventory through single or three phase operation with 200V drives and dual fan/pump and machinery duty ratings on higher power modules

    Feature packed

    On-board serial port with Modbus RTU for connecting to other automation equipment or PC tools for access to advanced features


    Programmable logic control with the optional Logicstick memory

    High Performance

    Open loop vector control

  • Specifications

    Key specifications

    • Automatic no-spin autotune for rapid performance optimization
    • 8 preset speeds available for greater application flexibility
    • Keypad access to all parameters – basic and advanced menus
    • Open loop vector control. Speed or Torque control
    • Speed reference input: 0-10V, 0-20mA, 4-20mA (-10V to +10V SM-I/O Lite option)
    • Switching frequency from 3kHz up to 18kHz - quiet motor operation
    • Output frequency from 0 to 1500 Hz
    • Linear and S type acceleration and deceleration ramps
    • Modbus RTU RS485 via RJ45 connector as standard
    • DC injection braking as standard
    • Dynamic braking transistor as standard
    • Energy savings with dynamic motor flux V/Hz
    • Fan and pump energy optimization with quadratic motor flux V/Hz
    • Advanced standard software features, such as timers,thresholds, maths blocks, logic operators, PID controller and kW/h meter

    Inputs and outputs

    Standard Inputs and Outputs I/O Default Function Rating Quantity



    Digital Inputs

    Enable / Reset

    Run Forwards

    Run Reverse

    Local Remote Speed Reference








     Digital Outputs Zero Speed 24V  1
     Relay Outputs

    Drive Healthy

    Normally open contact  1
     Analog Input 1

    Local Speed Reference

    0 - 10V

     Analog Input 2

    Remote Speed Reference

    0-20mA or 4-20mA

     Analog Output Motor Speed 0 - 10V

     * I/O functions shown are default European settings, other functions are configurable. I/O can be expanded through option modules.


    Environmental safety and electrical conformance

    • IP20 (NEMA 1)
    • Conduit kits available for wall mounting
    • Ambient temperature -10°C to 40°C
    • Electromagnetic Immunity complies with EN61800-3, EN61000-6-1 and EN61000-6-2
    • Humidity 95% maximum (non-condensing)
    • Electromagnetic Emissions complies with EN61800-3 (second environment) as standard. Complies with EN61000-6-3 (residential) and EN61000-6-4 (industrial) generic standards with optional footprint EMC filter


    Dimensions, weight and ratings

    For more information please refer to the product documentation

  • Options

    Automation options

    Adds the memory required to allow the Commander SK to execute a ladder logic PLC program

    Keypads and parameter storage

    SK-Keypad Remote
    The SK-Keypad Remote is a panel mounting LED display to IP65 and/or NEMA 12

    Upload drive parameters to the SmartStick for storage or for easy set-up of identical drives

    Communication option modules

    CANopen interface supports various profiles including several drive profiles

    SM-DeviceNET option module

    Follower option module, for high performance servo applications

    Supports Ethernet/IP and Modbus TCP/IP and can generate emails. Provides high speed drive access, global connectivity and integration with IT network technologies

    Interbus interface option module

    LonWorks interface for building automation applications

    Follower option module

    PROFINET is an Ethernet based industrial network protocol adapting Ethernet hardware and protocols

    Input and Output option modules

    SM IO 24 V Protected
    Overvoltage protected I/O module

    SM-IO 120 V
    Module that provides digital I/O rated to 120Vac

    SM-IO 32
    Extended digital I/O, adding 32 digital high speed bi-directional I/O points to the drive

    SM-IO Lite
    Extended I/O interface with reduced functionality

    NAMUR standard I/O interface with high speed I/O

    SM-IO Plus
    Extended I/O interface to increase the number of I/O points on a drive

    SM-IO Timer
    Extended I/O option module with real time clock
  • Software

    Control Techniques Windows-based software packages connect using Ethernet, CTNet, Serial or USB connections. Ethernet communications allow the drives to be accessed remotely, anywhere in the world.

    Commissioning and monitoring software

    CTSoft - Drive configuration tool for Control Techniques drives
    CTSoft is a drive configuration tool for commissioning, optimizing and monitoring Control Techniques drives

    CTScope - Real-time software oscilloscope
    CTScope is a real-time full featured software oscilloscope for viewing and analyzing changing values within the drive

    Automation and motion programming software

    SyPTLite - Fast user program editor for Control Techniques drives
    SYPTLite is a ladder diagram editor allowing users to develop simple programs for Control Techniques drives and option modules

    Analysis software

    CT Energy Savings Estimator - Energy optimizing software
    Il nostro software di calcolo del risparmio energetico consente di analizzare l'utilizzo di energia per varie applicazioni e di calcolare il risparmio sui costi ottenuto con i convertitori a velocità variabile

    CT Harmonic Calculator - Analysis of drive system harmonics
    CT Harmonic Calculator is a supply harmonics calculator that will help you to economically meet the required standards for your installation

    Connectivity software

    CTOPCServer - OPC compliant server
    CTOPCServer is an OPC compliant server for interfacing your own PC software with Control Techniques drives
  • Downloads
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