Sensor for Industrial Servo Control
March 2008
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R-Series SSI encoder position sensors feature faster data processing and more-accurate sensing for servo control applications in automation, providing a high-performance sensor in a durable industrial package. The new design is based on the supplier’s Temposonics magnetostrictive sensing technology and provides the same absolute serial encoder interface that is widely used in computer numerically controlled (CNC) and motion controls in factory automation applications. The R-Series SSI sensor is ideal for use in machine tool and metals production, including die-casting, punching and stamping, plastics injection and blow molding, and motion simulation and entertainment platforms, particularly those that utilize electromechanical actuation such as linear motors. The SSI output of the new R-Series sensor product is faster, with an optional data update rate of 250 μseconds synchronized with an external control clock, regardless of stroke, with as few as 16 μseconds between measurement data clock cycles. The supplier’s proprietary synchronization technology ensures accurate position output while minimizing inherent system-related delays to produce smooth, precise velocity loop control. The supplier provided two additional output options for the SSI sensor—one that measures the difference between two position magnets and one that measures sensor speed.

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