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 – Tachs, Tachometers, Encoders, Rotary Pulse Generators

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

Tachs, Tachometers, Encoders, Rotary Pulse Generators 

Heavy, Mill-Duty Encoders

Dependability Under Extreme Conditions

For over 25 years, Avtron has manufactured Heavy, Mill-Duty (HMD) encoders for drive feedback in severe environments for the continuous-process industries. Our rugged designs coupled with robust, sealed electronics will provide many years of trouble free service when properly installed in their intended applications.

The World’s First HMD Encoders with Smart Electronics

Continuous-Process industries strive to maintain production and minimize unscheduled shutdowns. Outages caused by encoder failures have been a headache to many production and maintenance managers. Avtron solved this problem with the introduction of the M285, M485, and M685 SMARTachTM line of HMD encoders. These units incorporate the latest in sensor technology with Adaptive Electronics that maintain signal quality for the life of the sensor and Fault Check circuitry to warn maintenance personnel of an impending sensor failure long before a failure occurs. An open collector Alarm output is available to signal a PLC or alarm panel and let operators know so maintenance can be scheduled at the next planned outage. Time spent troubleshooting the cause of an unscheduled outage is also eliminated. Replaceable sensors are part of the package and take about one minute to swap out, thus eliminating the time it takes to swap out the entire encoder.

QUADTachTM, THIN-LINETM, and SMARTachTM are trademarks of Avtron Manufacturing, Inc.


Tach Instruction Sheets can be found on the Avtron website.
The links below will open a new browser window of the Tach section on the Avtron site.

M285

M285
View the M285 Brochure or Instruction Sheet.

The Avtron Model M285 SMARTach is a high performance modular rotary pulse generator, designed for use as a feedback device for AC and DC drive control systems. It relies on the same field proven principles as Avtron’s well known SLAPTach (TM) pulse generator, but provides greater resolution, up to 1200 PPR. Additionally, as a result of five years field research, the M285 incorporates features that make it mechanically and electrically more reliable than any other pulse generator available today.
Solid Shaft Encoder and Hollow Shaft EncoderCheck the availability of this model. Visit Tachometers Availability for more information. Slide Show demoView Slide Show –> on Setting Air Gap on M285 Sensors

SLAPTachTM is a trademark of Avtron Manufacturing, Inc.


M285 QUADTachTM

M285 Quad Tach
View the M285 Instruction Sheet.

SB2917 outline drawing for M285 QUADTACH
View enlarged view of SB2917 outline drawing.

The newly released Avtron M285 QUADTach is a high performance modular rotary pulse generator, designed to provide speed feedback to AC and DC drive control systems.The M285 QUADTach is available with up to four (4) field replaceable sensor assemblies, which eliminates the need to gang together 2 or more encoders to obtain multiple outputs. This allows the user greater application flexibility and can reduce downtime by allowing an unused sensor to act as a spare. This unit is otherwise functionally identical to the M285 SMARTach.The M285 QUADTach line driver outputs can be had with 240, 256, 300, 480, 512, 600, 960, 1024, or 1200 pulses per revolution with various connector options such as the MS Style, Industrial Style, and Right Angle Style Connectors with mating plugs.

Sensors are available with 5vDC, 12-15vDC, or 24vDC line drivers.

QUADTachTM is a trademark of Avtron Manufacturing, Inc.


Built-in Diagnostic Indicator

SMARTach with Diagnostic Indicator
SMARTach with Diagnostic Indicator. Click here to view the Brochure.

Avtron has developed a Built-in Diagnostic Indicator for use on the SMARTach product line. This new product feature provides a visual confirmation of proper Encoder operation without having to interrupt the process. One look tells it all.

M193B

M193B
View M193B Instruction Sheet.

The M193B is the latest version of the original Avtron SLAPTach (TM) that was introduced in 1984. The reliable modular design has made it one of our most popular models. The M193B can be used in applications that previously used older style Avtron SLAPTachs, like the M180, M182, M190, M192A, M193A and others.

SLAPTachTM is a trademark of Avtron Manufacturing, Inc.


M585

M585
View M585 Instruction Sheet.

The M585 SHAFTach (TM) is the original shaft mounted pulse generator developed by Avtron in 1990. Since then, it has been used in hundreds of applications where mounting problems prevented the use of conventional designs. The M585 eliminated the need for adapter flanges and couplings that are expensive and can contribute to mechanical problems, especially on larger motors.

SHAFTachTM is a trademark of Avtron Manufacturing, Inc.


M785

M727A, M737A, M738, and M785
M727A, M737A, M738, and M785 pulse generators represented in photo.
View M785 Instruction Sheet.

The Avtron Model M785 pulse generator is a zero-speed rotary transducer, allowing operation down to zero RPM. The M785 generates a specific number of pulses for each rotation of its shaft. When coupled to a machine, its output is directly proportional to process travel (pulse count) or speed (pulse rate).

M727A

M727A, M737A, M738, and M785
M727A, M737A, M738, and M785 pulse generators represented in photo.
View M727A Instruction Sheet.

The M727A zero-speed rotary encoder is made for heavy mill-duty environments. This unit can either be NEMA 56C foot or face mounted with single or dual outputs for AC and DC drive control, speed feedback, or instrumentation systems. The M727A can also be purchased with a second shaft extension for multiple machine hook-ups.Capable of withstanding wide temperature ranges, the M727A is available with a single phase 30, 60, 90, 120, 180, 240, or 360 pulses per revolution with MS Style connectors and mating plugs for each output. The M727A is totally enclosed in a rugged and sealed cast housing.

M737A

M727A, M737A, M738, and M785
M727A, M737A, M738, and M785 pulse generators represented in photo.
View M737A Instruction Sheet.

The M737A is a zero-speed rotary encoder. This unit can either be NEMA 56C foot or face mounted with single or dual outputs on AC and DC drive control and instrumentation systems. The M737A can be provided with a second shaft extension for multiple machine hook-ups. The M737A is totally enclosed in a rugged and sealed cast aluminum housing, which is capable of withstanding harsh and wet industrial environments.This unit is equipped with a two phase 240 pulses per revolution and has either an MS connector or conduit connection for each output. The outputs are short circuit protected to common.

M738

M727A, M737A, M738, and M785
M727A, M737A, M738, and M785 pulse generators represented in photo.
View M738 Instruction Sheet.

The M738 is a zero-speed rotary encoder. This unit can either be foot or face mounted with single or dual outputs for AC and DC drive control, speed feedback, or instrumentation systems. The M738 can be provided with a second shaft extension for multiple machine hook-ups. The M738 is totally enclosed in a rugged and sealed cast aluminum housing, capable of withstanding harsh and wet industrial conditions.This unit is equipped with quadrature 240 pulse per revolution. The M738 connections can be MS Style, Terminal Block Style, or �” Conduit. Outputs are short circuit protected to common. It can be wired for single ended or differential applications without modifications.

Call Joliet Technologies TODAY 

If you have any questions concerning Avtron’s Tachs, Encoders, and Pulse Generators, please contact us by:
Phone (815) 725-9696,
Toll Free (866) 492-9888,
Fax (815) 725-9393 or
E-mail info@joliettech.com


Joliet Technologies custom packages, integrates and engineers AC Variable Frequency Drives (VFD), DC Variable Speed Drives (VSD) and AC Drive Controllers using top of the line manufacturers, like ABB, Emerson-Control Techniques, Siemens and Saftronics (Fincor). Our 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.