As of March 26, 2010 Joliet Technologies is no longer representing the Avtron line of products.

We do however represent the Dynapar line of Rotary Feedback Products.

Avtron – Adjustable Speed Drives and Drive Systems

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

Adjustable Speed Drives and Drive Systems

DC Drive and System Retrofits

“CHUNK-A-TIZE” (SM) is a servicemark of Avtron Mfg., Inc.

DC Drive Retrofits

For two decades, Avtron has specialized in modernizing old/outdated drive systems by adding digital regulating modules. ADDvantage-32 modules, used on Avtron’s DC drives, have been configured for retrofit applications. They provide the best performance with low installation cost and downtime.

Better Control

Process performance improves because existing drives can be speed regulated to �0.001%. Each drive can be configured as a speed, tension, current regulator, or as a center driven winder/reel. Coordination and progressive draw are included and the Avtron regulators can interface with a wide variety of programmable controllers. Some benefits of a retrofit include:

  • Eliminates failure-prone or obsolete electronics
  • Eliminates pots and jumpers
  • Adds modern diagnostics
  • Compatible with nearly all drives
  • Can be installed one section at a time

“CHUNK-A-TIZE” Your Drive Upgrade

The lost downtime resulting from a normal drive system installation often exceeds the cost of the system. Avtron’s retrofit techniques, coupled with distributed intelligence, eliminate installation downtime. No large and expensive “master director” or DCS is required. Regulators can be installed one at a time, and interfaced to each other as additional ones are added. Drives can be modernized during normal scheduled outages, without additional downtime. Much less funding is needed by doing a large project in this cost effective manner. Our engineers can develop a plan to phase in (“CHUNK-A-TIZE” (SM)) your section by section modernization.

“CHUNK-A-TIZE” (SM) is a servicemark of Avtron Mfg., Inc.

AFM – Advanced Firing Modules

AFM--Advanced Firing Module Installation
Drive modified with AFM.

Avtron Advanced Firing Modules are used when it is desired to replace existing regulating electronics. The customer retains existing motors, isolation transformers, field wiring, bus bars, and SCR (Silicon Controlled Rectifier) power modules, thus facilitating modernization at a fraction of the installed cost of new drives.Each AFM is typically provided on a panel, together with pulse transformers to fire the existing SCRs. This is usually pre-wired to enable the most rapid installation, minimizing downtime.The AFM can be used with most 3 phase, full wave, SCR power bridges. All speed, tension, position and current loops and the SCR firing circuits are replaced by digital hardware and software-based equipment.
Any size power bridge can be fired, even those with parallel SCRs. This type of retrofit is most cost effective on high power bridges where the cost of SCRs, contactors, fuses, etc., is significant or on applications where it is advantageous to retain the existing cabinetry and power wiring to reduce downtime and installation costs.

ACM – Advanced Control Module

The ACM module is designed to provide digital outer loop control for existing DC or AC power converters. By providing a simple analog interface to the speed or current loop of existing equipment, the ACM eliminates modules that are old or obsolete and coordinates the section with the overall control system. Simplicity of the interface makes the ACM useable with almost any type of power converter, and provides the benefits of digital setpoints, feedback, and diagnostics.

The ACM provides full digital coordination at a low cost. It can be installed one section at a time to cure problems with specific sections. It includes most ADDvantage-32 diagnostics, such as the 4-channel signal analyzer.

AMG – Advanced Motor Generator Set Controller

The AMG can be used on virtually any motor or generator field. It includes a 3 phase, full wave, regenerative SCR (Silicon Controlled Rectifier) power bridge to supply field current. Armature current, field current, speed, position, tension, and winder loops are closed digitally. Field forcing and field flux control algorithms are included to provide the best possible dynamic response in demanding high speed applications.

The AMG is most cost effective on large horsepower MG sets where regulation improvement is desired, performance improvements like progressive draw are needed, or electronics are simply worn out.

Call Joliet Technologies TODAY 

If you have any questions concerning Avtron’s Adjustable Speed Drives and Drive Systems or related products, please contact us by:
Phone (815) 725-9696,
Toll Free (866) 492-9888,
Fax (815) 725-9393 or

On-Line Quotation Form

On-Line: Digital Drive Price Quotation Form

Joliet Technologies is an OEM that custom packages, integrates and engineers AC Variable Frequency Drives (VFD), DC Variable Speed Drives (VSD) and AC Drive Controllers. Our drive systems integrate top of the line manufacturers, like ABB, Emerson (Control Techniques & Saftronics / Fincor), Siemens and WEG to name a few. Our added value custom drive packages are built to your specifications for your application. We specialize in large horsepower drive systems (500Hp and above). Call us at (815) 725-9696 or fax us at (815) 725-9393 or e-mail us or fill out an RFQ with your requirements. Serving the greater Chicagoland area and the World.