Joliet Technologies Variable Speed Drives…

We have the experience and know how to provide you with the best drive for your application. Joliet Technologies can evaluate your current equipment and recommend either a Retro-Fit or System Replacement. Feel free to contact us with any drive questions you may have.

We also offer a wide variety of off the shelf standard drives and standard drive packages (listed above). We can also provide you with spare and replacement parts to keep your equipment running at peak performance. Call us today and let us know what you need.

For all purchases, contact us at: Toll Free (866) 492-9888,
Phone (815) 725-9696, Fax (815) 725-9393 or E-mail

AC Drives


Yaskawa AC Drives

  • GA800 Drive
  • A1000 Drive
  • U1000 Industrial MATRIX Drive
  • V1000 Drive

AuCom Soft Starters


GE Motors


Emerson – (Control Techniques & Saftronics)




DC Drives



  • ABB DCE 400 plus (.pdf)
    Obsolete – No Longer Available
    the complete DC Drive for regenerative or non-regenerative operation (20 to 260A DC, 230/380/400/415/460/500V AC, 3-Phase)
  • ABB DCS 400 Digital DC Converter (20 to 1000A DC)
  • ABB DCS 500 Digital DC Drive (25 to 5150A) 220…1000V, 3-phase, Regenerative / Nonregenerative
  • ABB DCS500B (.pdf) Digital DC Drive (25 to 5150A) 220 to 1000V, 3-phase, Regenerative / Non-regenerative



Custom Electric Control Panel Shop

Joliet Technologies shop is a 10,000 square foot, highly efficient facility. Designed to integrate sales, engineering, assembly and testing of custom electrical control panels. We pride ourselves on providing fully engineered, custom control panels, for all areas of industrial and commercial use.

UL 508A Certified Panel ShopIndustrial Control Panels & Industrial Control Panels Certified for Canada

Spare Parts & Replacement Parts

We can supply most Manufacturers for the following:

  • SCR Fuses
  • Control Fuses
  • SCR (Silicon Controlled Rectifier) Pucks/Modules
  • Diode Modules
  • Printed Circuit Boards
  • Fans/Filters
  • Circuit Breakers
  • Molded Case Switches
  • Disconnect Switches
  • Meters
  • AC/DC Contactors
  • AC Starters
  • Relays
  • Tach/Encoders
  • Pilot Devices
  • Transformers
  • Line Reactors
Need to run a 230V, 3Ph motor with 230V, 1Ph input?
Joliet Technologies is pleased to announce that we have the solution to run most 230V, 3Ph motors with only 230V, 1Ph input!
For more info, contact us.


Joliet Technologies is the preferred Dynapar Integrator for the Chicagoland area.

Innovation, Customization, Delivery

Dynapar encompasses the broadest line of trusted brands in motion feedback control, including Dynapar encoders and Hengstler brand incremental encoders and absolute rotary encoders, Northstar heavy-duty magneto-resistive and Heavy-Duty optical encoders and high-performance Harowe brand resolvers. Only Dynapar feedback solutions offer these world-class rotary feedback brands from one Global Supplier with 3 day delivery on most models for customer peace of mind.

 50 ADC & 90 ADC Field Regulators!!!

Joliet Technologies announces a new line of stand alone analog field regulators with ratings of 50 Amps DC and 90 Amps DC. Units are current regulated with use of internal CTs and accept a 0-10vdc input. Unit also features field economy, and field fault circuitry.
Common Uses: Units are great for replacing Siemens 3rd generation field regulated supplies, and can be used as spares. Will accommodate all traction motors (including GE 752* Traction Motors) with high field amps. Designed to be user friendly and installation is a snap with the compact dimensions.
50 Amp DC Field Regulator units . . . Call for Pricing (Limited Availability)
90 Amp DC Field Regulator units . . . Call for Pricing (Limited Availability)

“As always Joliet Technologies offers great pricing and engineering consultation”

*GE 752 is a registered trademark of General Electric Company.

Call Joliet Technologies TODAY
Call Us Toll Free! 1.866.492.9888