Magnetic Ring Encoder
- Wednesday, 01 December 2010
ASM Sensors (Elmhurst, IL) offers the PMIR7 series POSIROT® incremental en coder magnet rings in three sizes for different shaft sizes. They yield up to 184,320 pulses per revolution in conjunction with the quadrature encoder read head. The encoder system consists of a magnetoresistive read head, PMIS4, and a dual-channel magnetic ring. The sensor head is enclosed in a metal housing and generates A, B, Z output pulses for quadrature detection with reference mark. The rings come in three sizes that can be press-fitted onto 27, 35, or 50-mm shaft diameters. The metal housing provides protection against EMC interference and thermal overload. The ring sizes offer decade, binary, or degree division that produce up to 102,400, 131,072, or 184,320 pulses per revolution, respectively. The available outputs are HTL, TTL, and TTL24V with a maximum output frequency of 480 kHz.
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