Bearingless encoder for feedback in dynamic motion systems and heavy-duty applications

Bearingless encoder for feedback in dynamic motion systems and heavy-duty applications von Lika Electronic

Von: Lika Electronic  04.03.2013
Keywords: Meß und Regeltechnik, Automatisierung, Elektromechanische Komponenten und Geräte

SMRI from Lika Electronic is the miniature reliable solution suitable for installation in highly dynamic and demanding rotary motion systems. It ensures safe, fast operation even in harsh and dirty environments. SMRI is the bearingless incremental encoder specifically tailored to meet the high speed requirements of rotary motion systems in advanced applications. In addition, the robust space-saving construction and encapsulated electronics guarantee high IP67 protection and make it suitable for motor feedback in harsh environments and heavy-duty applications such as torque motors and synchronous generators in direct drive wind turbines and even for direct installation in large diameter shafts up to 380 mm (15”). Thanks to the implemented cutting edge technology it can be further installed for accurate position detection in rotary applications up to 25,000 RPM such as in machine tool spindle motors. The bearingless design along with the dependable magnetic scanning increases benefits in comparison with high-priced optical devices. SMRI is contactless, wear-free and immune to dirt and contaminants, thus it offers virtually maintenance-free enduring service even in most demanding conditions and under moisture, vibrations and significant mechanical stresses. In addition, the magnetic system affords large mounting tolerances and enables a gap between the sensor head and the magnetic scale up to 2 mm (0.079”); this allows for unparalleled ease of installation compared with optical sensors and dependable operation even though alignment and parallelism are coarse. Furthermore SMRI features a very compact and small profile and is designed to save space and ease integration thanks to the minimum sensing head foot-print and shallow ring (20-mm depth only). So it can be installed directly in a wide variety of motor shafts and even when the space is highly constricted. SMRI generates square wave output digital signals (ABI, /ABI) with Push-Pull and Line Driver output circuits. Typical resolution is 3600 PPR (with MRI114, MRI141, MRI284 magnetic rings), further custom resolutions are available on request. As an additional advantage, it can be equipped with built-in sensor to provide the “R” reference signal once per revolution of the magnetic ring. Furthrmore it is fitted with integral LEDs to give diagnostic information (activity and status/error) and ease at commissioning.

Keywords: Achssteuerungen, Automatisierung, Drehgeber, Electronic, Elektromechanische Komponenten und Geräte, Encoder, Encoder Incremental, Magnetische Messsysteme, Meß und Regeltechnik, Messsysteme, Motion Control, Prozesstechnik, Regelungstechnik, Sensoren, Sensortechnik, Spindelpositionierung, Winkelschrittgeber, Winkelsensoren,

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