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Drives & Motion

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Variable frequency drives, servo drives, and motion controllers regulate motor speed, torque, and positioning across the full range of industrial processes. PLC Direct supplies drives and motion hardware from leading automation manufacturers as surplus sealed, refurbished, and used, supporting replacement and maintenance of installed variable frequency drive and motion control systems across manufacturing, process, and infrastructure environments. 

Where Are Drives & Motion Used in Industrial Environments? 

Drives and motion control hardware are installed wherever electric motors require precise speed, torque, or position regulation across continuous and discrete industrial processes. Variable frequency drives, servo drives, and motion controllers are present across nearly every sector of industrial operations. 

Facilities and operations that depend on drives and motion control hardware include: 

  • Manufacturing and assembly plants running conveyor systems, machine tools, and multi-axis production equipment requiring coordinated servo drive control. 

  • Water and wastewater treatment facilities using industrial VFDs for pump and fan energy optimization across distributed, often unattended sites. 

  • Mining and mineral processing operations controlling crushers, conveyors, and slurry pumps with variable frequency drives sized for high-load continuous duty. 

  • Food and beverage processing lines where precise variable speed drive control governs filling, mixing, and packaging equipment. 

  • Oil and gas and petrochemical plants running compressor and pump drives in process-critical applications where hardware availability directly affects production continuity. 

When a drive fails or reaches the end of its service, sourcing a compatible replacement quickly is essential to restoring normal operations. 

Which Brands of Drives & Motion Does PLC Direct Stock?  

PLC Direct stocks variable frequency drives, servo drives, and motion control hardware from major industrial automation manufacturers. 

  • Siemens SINAMICS and SIMOTION: The SINAMICS drive family covers AC drives, DC, and servo drive applications, including the SINAMICS S120 multi-axis system, with SIMOTION motion controllers for complex coordinated motion requirements. 

  • Schneider Electric Altivar VFDs: The Altivar 61 covers pump and fan applications and the Altivar 71 covers high-power machine variable frequency drive requirements, available across multiple power ratings. 

  • ABB ACS Series VFDs: The ACS310 and ACS355 industrial VFD families cover HVAC and general-purpose inverter drive applications with integrated safety functions. 

  • Yaskawa GA/V1000/A1000 Series and Sigma Servo Systems: The GA800, GA500, V1000, and A1000 variable frequency drive series are available alongside Sigma-7 servo drives and SERVOPACKs for motion control applications. 

All drives and motion components are available as surplus sealed, refurbished, and used, depending on current inventory. 

What Should You Know Before Ordering Drives & Motion? 

Hardware condition options: PLC Direct supplies variable frequency drives and motion control hardware as surplus sealed, refurbished, and used. Surplus sealed units are factory-sealed stock; refurbished units have been tested and restored to operational condition; Used hardware has been previously installed and carries the same 1-year PLC Direct warranty as all other condition grades.   

Compatibility and part identification: Drive part numbers encode critical parameters, including input voltage, output power rating, frame size, and communication interface, all of which must match the installed motor and control system. For servo drives and motion controllers, encoder interface type and axis configuration are additional compatibility factors; confirm the installed system specification before ordering a replacement unit. 

Warranty: All drives and motion hardware purchased from PLC Direct carry a standard 1-year warranty covering defects and functionality, applicable to surplus sealed, refurbished, and used products. 

PLC Direct supplies drives and motion hardware for replacement and maintenance purposes and does not provide system design, programming, or integration services.

Frequently Asked Questions

PLC Direct carries variable frequency drives, servo drives, and motion controllers from manufacturers, including Siemens, Schneider Electric, ABB, and Yaskawa. Hardware is available as surplus sealed, refurbished, and used across a range of power ratings and communication configurations.
A variable frequency drive controls the speed and torque of AC induction motors by varying output frequency and voltage, and is used in applications such as pumps, fans, and conveyors. A servo drive operates in a closed-loop system with a servo motor and encoder to deliver precise speed, torque, and position control, and is used in applications requiring accurate positioning or synchronized motion.
The replacement industrial VFD must match the installed motor's power rating, supply voltage, and output current requirements, as well as any communication protocol used by the control system. The original part number on the installed drive is the most reliable starting point; the nameplate data on the motor provides a secondary reference for power and voltage specification.
Yes. Surplus sealed variable frequency drives are factory-sealed units that have not been placed in service; refurbished drives have been tested and restored to operational condition. Both are routinely used in production replacement and maintenance applications, and all hardware carries a 1-year PLC Direct warranty covering defects and functionality.
Protocol support varies by drive family and model. Commonly supported protocols across the drives and motion collection include PROFIBUS, PROFINET, EtherNet/IP, Modbus TCP/IP, and CANopen. Protocol capability is encoded in the part number for most drive families. Confirm the specific model's communication options before ordering.

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