Absolute Encoder is designed for extreme environments.
Press Release Summary:
By using magnet to generate electronic signal, Acuro(TM) XR offers optimal resistance to shock and vibration. Oversized bearings enable mechanical life of up to 109 revolutions under simultaneous axial and radial shaft loads of 200 N, and labyrinth seals around 10 or 12 mm shaft and housing protect against liquid ingress to IP69k. Communication options include synchronous serial interface or bi-directional synchronous serial interface, CAN Open industrial bus, and analog output.
Original Press Release:
Dynapar Introduces Absolute Encoder for Extreme Environments
Gurnee, IL - February 15th, 2008--Dynapar announces the introduction of the compact Acuro(TM) XR absolute encoder. The new encoder incorporates three important design elements that make it ideal for harsh applications. First, unlike traditional absolute encoders that utilize optical technology, the new encoder utilizes magnetic technology. Second, it uses considerably oversized bearings to handle high axial and radial shaft loads. Third, it is tightly sealed around the shaft and housing to resist liquid ingress.
Rugged Construction
Using a magnet instead of light to generate the electronic signal increases the encoder's resistance to shock, vibration, and moisture tremendously; so much so that this absolute encoder can now be used in applications previously unsuitable for sensitive optical units. Ball bearing design and installation are significant factors in affecting the useable life of an encoder, so the bearings used in the Acuro XR were selected for operation at maximum loading to achieve three times the useful life of conventional designs. The result is a mechanical life of up to 109 revolutions under simultaneous axial and radial loads of 200N.
Extreme environmental conditions usually mean a considerable amount of moisture is present. Therefore, the new absolute encoder uses special labyrinth seals around the shaft to meet stringent IP69k ratings. In addition to being submersible, the protection rating of the encoder means it is compatible for use in hygienic food and beverage processing. For extremely caustic environments, the encoder is available with a stainless steel housing to resist corrosion. For those applications not requiring this high level of protection, a standard wash down IP67 version is also available.
Compact Dimensions
With an installed height of only 32mm, the new encoder is the most compact size in its class. This means saving valuable space when machine dimensions are critical. Although mounting height is considerably reduced, the mounting face is kept to an industry-standard 58mm diameter to be backward-compatible with existing designs in the field. The choice of a 10mm or 12mm shaft size is standard.
Multiple Communication Options Makes Integration Easy
Customers wanting to upgrade from existing fragile optical encoders (which typically use glass discs) will benefit from the numerous communication options available on the Acuro XR encoder. A Synchronous Serial Interface (SSI) or BiSS (Bi-Directional Synchronous Serial) interface is available for high-speed data transmission and reduced wire count. The prolific CAN Open industrial bus is also available, a popular choice for many industrial automation applications. In addition, customers wanting to convert from potentiometers or transducers will appreciate the analog output option, available in voltage (0-10V) or current (4-20mA) format.
Incremental Versus Absolute Encoders
Incremental encoders measure motion as a stream of electrical pulses counted from a home starting position. If there is strong electrical noise or other problem, operators must drive the machine to a home position. Absolute encoders use a different technology by encoding a unique position for each increment of shaft rotation. Because every position is expressed as a unique digital "word", absolute encoders never need re-homing and are resistant to noise. The introduction of an absolute encoder in many applications can improve efficiency, throughput, and reduce waste and downtime.
Price and Availability
The Acuro XR magnetic absolute encoder is built to order and available for the general market. Dynapar will market the encoder under its Hengstler brand name, and list pricing starts around $600. For custom OEM applications and volume pricing, contact a Dynapar representative at 800-873-8731 or visit the web at dynapar.com/AcuroXR for technical information.
About Dynapar
Dynapar is a world-leading manufacturer of optical and magnetic encoders and resolvers with more than 50 years of experience in engineering and manufacturing rotary feedback devices. Dynapar was founded in Gurnee, Illinois in 1955 and has been expanded through the acquisitions to include Dynapar(TM) Hengstler(TM), NorthStar(TM), Harowe(TM), and Encoder Technology brand product lines. Dynapar is now uniquely a provider of technologies spanning optical, magnetic, and resolver based feedback.
Pioneering the first true vector-duty hollow-shaft encoder launched Dynapar's strong presence in several industries, including steel, paper, elevator, oil and gas, wind energy, medical, material handling, and industrial servo manufacturers. From small kit encoders to large mill-duty tachometers, Dynapar has the industry covered.
Dynapar customers rely on expertise and support provided from the U.S. sales and manufacturing location in Gurnee, Illinois: Phone +1 800.873.8731 or +1 847.662.2666; FAX +1 847.662.6633; Website: www.dynapar.com. In addition, Dynapar supports global customers with local sales and production locations in Germany, Japan, China, and Brazil.
