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 SX

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NEMA 4X Washdown Drive

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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This module enables the drive system designer to solve more complex applications by providing additional inputs and outputs that the Commander SX can access locally. These connections on 12-pin and 3-pin removable terminal strips are programmable using SXSoft or the drive’s keypad. Their assignments are stored within the drive’s memory.

  • Analog Inputs
  • 2 Analog Outputs
  • 3 Digital Inputs
  • 3 Digital I/O
  • 2 Relay contacts 115VAC, 2 amp resistive

Motor Feedback

Control Techniques Commander SX PX-Encoder Module.PX-ENCODER

The PX-Encoder module provides an encoder feedback option for closed loop vector control. The module supports differential quadrature type encoders with terminals for A.A\B,B\ up to 140 kHz operation. The Module also provides encoder power, up to 300mA at 5V or 200mA at 15V.

Description Order Code
I/O Expansion PX-I/O Plus
Encoder Feedback PX Encoder



The Commander SX has a standard Modbus RTU/RS485 communications RJ45 connector. In addition, SM fieldbus option modules can be inserted to control and monitor a Commander SX on field bus networks. The standard Modbus-RTU port can be used for drive configuration using SXSoft.

Control Techniques Commander SX FieldBus Network Communication Modules

Description Order Code
DeviceNet SM-DeviceNet
CANopen SM-CANopen
MODBUS Standard

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