Dynapar - Rotary Feedback products. Innovation, Customization, Delivery.

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.

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

SLIM Tach® SL56 Rotary EncoderSLIM Tach® SL56 Rotary Encoder

Quick Specs…

  • Thin, compact, and only 0.75 inch thick
  • Mounts to 4.5 inch 56 C-Face motors
  • Rugged, reliable magnetoresistive sensor technology
  • Easy installation with no brackets or couplings
  • Hard, anodized aluminum construction
  • Single or dual sensor outputs available

Overview / Design Principle:

This reliable encoder may be configured with one or two electrically independent and totally isolated outputs. A high temperature version is available to meet operational needs up to 120° C. It also comes in a wide variety of shaft sizes, cover choices, and connector options.

The durable SLIM Tach® SL56 operates with unequalled resistance to grease, oil, salt water, dirt, fibers, and dust. Its hardened, encapsulated electronics make it immune to contamination, heavy machine vibration, and accidental impact, decreasing downtime. Hard, anodized aluminum of aircraft quality makes the SL56 the toughest, yet lightest, C-Face encoder available. A high power line driver comes standard and guarantees clean, crisp signals over long cable lengths, minimizing the need for signal repeaters.

Each version of the SLIM Tach® SL56 is easy to mount, requiring no bearings, adapter plates, or flexible couplings. Because the SL56 occupies only 0.75 inch of the motor shaft length, a brake, pulley, gear box, or coupling can also be placed on the shaft. The sandwich version provides double CFace mounting for applications which need the encoder between the motor and another device.

There are no bearings to fail or requirements for flexible couplings because its magnetized drum assembly is attached directly to the shaft. The mill duty latching connectors are are easy to wire with no need to field solder or to struggle with a crimp pin.

Features and Benefits:

  • Thru-shaft-shaft versions are standard; double C face sandwich version is also available
  • 64, 128, 256, 512, 1024, or 2048 pulses per revolution (PPR) with optional index pulse
  • 5-24VDC operation, bi-directional quadrature signals with high power, differential line driver outputs


The bearingless, heavy duty, NorthStar SLIM Tach® SL56 mounts directly to 4.5 inch 56 C face motors. With resolutions up to 2048 PPR, it is only 0.75 inch thick and ideal for tight machine configurations.


Standard Operating Characteristics

Code: Incremental
Pulses per Revolution: 60-2048
Phasing Sense: A leads B for Counter-Clockwise rotation (CCW) viewing encoder-mounted end
Quadrature Phasing: 90° ± 22°
Symmetry: 180° ± 54°
Index: 270° gated to falling B edge
Number of Output Modules: Single or Dual Redundant


Input Voltage Requirement: 5-15 or 5-26 Volts DC
Current Requirement: With Electrical Option L or H: 45 mA typical per sensor module plus line driver load
With Electrical Option V or 5: 65 mA typical per sensor module plus line driver load
Output Signals: With Elec Option L or H: 5-15 V Line Driver, 150mA
With Elec Option V: 5-26 V Line Driver, 100mA
With Elec Option 5: 5V Line Driver, 150mA
Frequency Response: 0 – 120kHz Data & Index
Electrical Immunity: 2kV ESD, Reverse Polarity, Short Circuit
Connector: 10 pin industrial duty latching, sealed NEMA 4 &12, IP65; MS connector or pig-tail


Shaft Speed: 5,000 RPM
Mounting Configuration: 4.5” 56C face mount for NEMA MG1 standards
Housing Material: Cast Aluminum
Acceleration Rate: 12,000 rpm/sec max
Shaft Length Required: 0.7” min
Allowable Shaft End-Play: ± 0.045”
Allowable Shaft Runout: 0.002” TIR


Operating Temperature Range: Standard: -40°C to +90°C
Extended: -40°C to +120°C
Storage Temperature Range: -40°C to +120°C
Humidity: to 98% RH (non-condensing)
Shock (Sensor Module): 1 meter drop test, 30 G’s Min
Vibration: 18 G’s @ 5-2000 Hz spectrum

Available Specifications:

Related Products & Resources:

For additional information or to receive a full-line catalog, contact your Dynapar representative at 1.800.873.8731 or visit their web site at: www.dynapar.com
Headquarters:1675 Delany Road • Gurnee, IL 60031-1282 • USA
Phone: 1.847.662.2666
Fax: 1.847.662.6633
Email: custserv@dynapar.com or dynapar.techsupport@dynapar.com
© 2009 Dynapar Corp. Printed in U.S.A. • Feedback Quick Reference Guide P/N# N-FLB130 (11/09) 5M

Call Joliet Technologies TODAY 

If you have any questions concerning Dynapar products, feel free to contact us:
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.