Redesigned Linear Encoder Program

July 27, 2006
SCHAUMBURG, IL - (July 2006) – HEIDENHAIN Corporation announces updates and enhancements to its well known, high quality linear encoder program. The mechanics and electronics of HEIDENHAIN’s LC Series absolute linear encoders have been fundamentally redesigned from the ground up to better meet today’s measurement requirements in machine tools, and now includes two interfaces -- HEIDENHAIN’s EnDat 2.2 and FANUC 02. HEIDENHAIN’s new encoders are the LC 183 and 483 series with EnDat interface and LC 193 and 493 with FANUC interface. These encoders offer more electrical advantages than ever before, including making purely serial axis-control possible. The resolution of the absolute position value is 5 nm for encoders with an accuracy grade of ±3 µm, and 10 nm for encoders with an accuracy grade ±5 µm with the EnDat versions. Also regardless of the measuring length, the data word length is 32 bits and with a clock frequency of 8 MHz, the formation of the position value and transfer takes approximately 20 µs. Both output formats also incorporate the single-field scanning technique insuring optimum signal quality, high traversing speed and contamination resistance. Maximum cable runs have also increased with the new interfaces. The lower cost EnDat connection technology and common cable assemblies (LC 1XX / 4XX) further reduce costs and decreases inventory requirements. Encoder diagnostics take place via additional information in the serial protocol. Along with the new interfaces, changes to mounting methods have been made with these HEIDENHAIN absolute linear encoders in order to simplify their installation in a wide variety of applications. Encoders of the 400 series can now utilize a universal mounting spar when required which allows for a cable outlet to the left or right. Available accessories also include clamps as an alternative that are mounted at fixed intervals along the measuring length to provide additional support. Encoders of the 100 series have a left and right cable outlet directly on the scanning unit. The unused socket connector is protected by a cap.