motor feedback systemSick Stegmann introduced the TTK70 Motor Feedback System, an absolute, non-contact linear measuring system that offers measuring lengths up to 4,000 mm, resolution of <1 µm and system accuracy of <10 µm, at operating speeds up to 10 m/s. The result is precise and highly reliable absolute position determination for linear motors in a diverse range of applications. The TTK70 motor feedback system is rated for operation in temperatures ranging from -30°C to +85°C. It carries the CE mark and is RoHS compliant. The TTK70 consists of a read head and a magnetic tape featuring a magnetic code that forms the measuring scale – 10 mm wide, and up to 4,000 mm long. The code consists of an incremental and an absolute track (twin-track tape). Absolute position values are calculated by the read head first detecting the absolute starting position during start-up of the linear motor. All further positions of the drive are determined via the incremental position on the magnetic track, i.e. sine/cosine signals. The values are transmitted via the HIPERFACE interface to the evaluation electronics of the linear drive – a market-standard method of communication that, for the first time ever via the TTK70, is now available for linear measuring systems. The result is an interface standard for all common servo drives, that covers all applications, with only one signal type.

Sick Stegmann, Inc.