Product Announcement from Leine & Linde AB

Leine & Linde Uses Early Warning System in Encoder-Image

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.

For more information on these encoders, Leine & Linde can be accessed directly via the web site at www.leinelinde.com. The North American contact for Leine & Linde product is Tom Wyatt (at 847-884-3713 or twyatt@heidenhain.com) in the HEIDENHAIN offices at 333 E. State Parkway, Schaumburg, IL 60173.

Leine & Linde is based in Sweden with North American distribution through HEIDENHAIN Corporation in Schaumburg, IL, USA. Leine & Linde is well known worldwide for offering high quality, heavy duty encoders of the incremental, absolute and bus types, and are noted for their product robustness designed to cope with the harshest of environments, such as those with high vibration, dirt and cold temperatures. These heavy, severe duty encoders are suited for drive and measurement applications and are often found in industries such as pulp and paper, forest and wood processing, agriculture, aggregate and mining equipment.

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