New Extreme Encoder from Leine & Linde

Strängnäs, Sweden – The new Extreme 1000 series from Leine & Linde offers encoders for severe environments. Available in North America through HEIDENHAIN Corporation, the measurement and function range on this Leine & Linde encoder is especially designed to meet the exceptional requirements of the steel, crane and mining machinery industries. In such applications, the encoder is exposed to extreme mechanical stress, vibrations and shock, as well as dusty environments with high temperatures.

With its sturdy bearings and enclosure, the Leine & Linde 1000 series encoder achieves extraordinary durability in all applications with similar demands. The enclosure, rated IP67, easily protects the encoder’s internal components from dust and liquids. Stainless steel housing is available as a special option.

Different incremental and absolute versions of the 1000 series are available, and a combination of the various encoder types can even be integrated in the same 1000 series product. For the first time ever, absolute pulse encoders with the PROFIBUS interface can now be used in extremely tough industrial environments by using this 1000 Series from Leine & Linde. The absolute variants are also available with interfaces such as SSI, EnDat, CANopen, DeviceNet™ or with a parallel output with resolutions up to 25 bit.

Leine & Linde
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LEINE & LINDE Uses Early Warning System in Encoder Series

Strängnäs, Sweden – In order to avoid false diagnoses, costly downtime and prevent sudden failures of rotary encoders in modern machinery, LEINE & LINDE offers a unique integrated early warning system called ADS™ (”Advanced Diagnostic System”) in its 800 Series of rotary encoders. These specially equipped encoders are gaining attention and are of particular interest to those in production plants in the milling industries (for example: wind mills, paper mills, steel mills, oil mills and mining).

Today’s production plants use rotary encoders that are often subjected to high mechanical streses in the form of shock and vibrations as well as high temperatures. It is a fact that the cost of machinery downtime in manufacturing is often all out of proportion to the expense of a simple defective component. And since rotary encoders are key parts of modern machinery and plant control units, it makes sense to equip them with a diagnostic system which continously monitors the internal functionality, therefore providing a basis for initiating maintenance measures in good time. The LEINE & LINDE 800 Series Encoders with ADS™ has often been known to quickly and clearly detect worn-out ball bearings due to poor installation, dust contamination, moisture issues and overheating, to name a few.

Specifically, this LEINE & LINDE automatic self-diagnosis system works by internally monitoring the completeness of the rotary encoder pulses and the correct pulse sequence. Even a single counter difference is registered by the system and reported. This error is relayed as a flashing LED on the rear of the encoder housing. The time of the fault and the corresponding error code are stored in the LEINE & LINDE 800 Series rotary encoder so that the user has the opportunity to read out and analyse the error code via an RS-32 interface once the encoder has been removed. A report can also be displayed directly at the machine if additional wiring is added to an overriding system control.

Leine & Linde
www.leinelinde.com

Stainless Steel Encoders from Leine & Linde

Strängnäs, Sweden – In consideration of machines and equipment used in harsh environments, Leine & Linde now offer stainless steel versions of all their measurement fieldbus encoders with shaft. Available interfaces are PROFIBUS, PROFINET, DeviceNet™ and CANopen.

Conventional rotary encoders are not suitable for harsh environments where corrosive agents are found. This is the case in many industries in which the encoders are exposed to an atmosphere of moisture and chemicals. Such environments will result in corrosion of the encoders’ mechanical parts and may cause loss in operation.

Leine & Linde
www.leinelinde.com

Leine & Linde Offers Robust Encoder with DeviceNet™

Strängnäs, Sweden – Leine & Linde is now introducing the availability of DeviceNet™ in the Leine & Linde 600 series, the highly robust ø 58 mm fieldbus encoder series. This support for fieldbus interfaces extends the range of applications for this already useful absolute rotary encoder.

This Leine & Linde series supports 13-bit singleturn or 25-bit multiturn with screw terminal or miniature M12 connection. Mechanically, various shafted- and hollow-shafted versions are available. The DeviceNet™ encoder supports encoder profile revision 2 and the functionality has been fully tested in compliance with the ODVA conformance test.

Overall, fieldbus technology is rapidly gaining acceptance and integration into automation applications worldwide. Based on network topology, system requirements and performance, various types of fieldbus systems are available, all developed and supported by individual standardization organizations. The key principle of fieldbus technology is to enhance device functionality, achieve communication transparency, simplify and standardize installations, as well as limiting the installation and maintenance costs. Sensors, like encoders, with support for various fieldbus interfaces have been available for several years and are increasingly gaining in acceptance and installed market share.

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