PLEASE NOTE: Effective 2019, we no longer supply Control Techniques variable frequency drives and components. We have drives from several other manufacturers which can meet or exceed the performance characteristics of the Control Techniques line. Simply complete the form below, or contact us with the model of your current or obsolete Control Techniques drive and we’ll be glad to identify a suitable replacement.

Also, the Fincor and Saftronics lines of AC variable frequency drives, DC variable speed drives, and reduced voltage starters were once owned by Emerson but have been obsolete for several years. However, we have many years’ experience working with these drives and can quickly identify replacements capable of exceeding the quality and performance of these older drive technologies. For a suitable replacement, fill out the form below or contact us with your drive or application requirements, and we’ll handle it from there!

Commander SK

Go to Control Techniques, Solutions Through Innovation

Simplicity with Function


Obsolete Drive Replacement RFQ -

If you need a replacement for an existing obsolete drive, complete the following form and we will send you a quote for a suitable replacement.

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Commander SK has been designed as a simple, compact, cost effective AC motor speed controller that delivers performance with simplicity and ease of use. With all the parameters you need for 90% of applications printed on the front of the drive, Commander SK ensures installation and commissioning are straight forward. However, for more demanding applications, Commander SK can deliver benchmark functionality at no added cost to the base drive itself. Plug-in options, dynamic performance, PLC functionality and other benchmark features ensure that in more complex applications Commander SK can deliver more than the average general purpose drive – giving you lower cost solutions and better productivity in your motor control applications.

  • 0.3 to 3hp (.25 to 2.2kW), 1Ø 200-240VAC
  • 1.5 to 3hp (1.1 to 2.2kW), 3Ø 200-240VAC
  • 0.5 to 5hp (0.37 to 4kW), 3Ø 380-480VAC
  • Easy to set-up – all the parameters you need (90% of typical applications) are printed on the front
  • Easy installation – choose between simple panel mounting and DIN-rail mounting (up to 2hp)
  • Simple connections – easy access terminals with clear marking
  • Simple start-up – easy push button set-up no need for complex programming
  • Communications – modbus RTU standard, available field bus options are Profibus-DP, INTERBUS, DeviceNet, CANopen, Ethernet
  • PLC Functionality- LogicStick and IEC61131-3 ladder and function block programming
  • Wide range of 110 – extra 110 options available including Real Time Clock
  • Performance – inherits the torque linearity and speed torque performance from the high performance Unidrive SP


Typical Application, Accurate Pump Control

Typical Application, Material Payoff Performance

Typical Application, Fan Energy Savings

Typical Application, Multiple Motors, Open Loop V/Hz

Typical Application, Extruder Reliability

Typical Application, Smooth Conveyor Acceleration

Typical Application, Mixer, Simple and Easy

Information provided by Control Techniques, a world leader in the design, production and marketing of electronic drives for the control of electric motors.