LEINE & LINDE introduces new high-current HTL encoders for functionally safe rugged drive applications

To meet market demands for heavy equipment designed with functionally safe solutions inside, Leine & Linde introduces the new FSI 800 series rotary encoders, particularly useful in rugged motor drive applications.

Well known for their robustness and reliability, these new Leine & Linde FSI 800 rotary encoders come complete with HCHTL (high-current HTL) signals which makes them suitable for high-disturbance environments, and are certified for use in SIL2/PLd applications / functionally safe machine environments. Long cable lengths are provided.

Up until now, most industries have had no other choice than to use 1 Vpp encoders for any kind of safe application where redundancy is required and met in a single unit. But the 1 Vpp signal is not suitable for all installations, especially not for those with a need for long cables or those that are subjected to electromagnetic disturbance, which is often the case in heavy industry. Thus, a focus on providing a single incremental HCHTL encoder was taken. The Leine & Linde FSI 800 the solution takes up less space, needs less cabling and lives up to high performance and robustness requirements. It is within these heavy industry-type settings that this certified HCHTL encoder excels.

The FSI 800 series is highlighted by a hollow shaft encoder called the FSI 862, which has been developed for certification in accordance with EN ISO 13849-1, EN 61800-5-2, IEC 61508 and IEC 62061, thus, allowing the encoder to be used in Functional Safety applications up to risk level SIL2 and PLd, Category 3. As a guarantee for safe installation, the hollow shaft encoder model is equipped with a keyway, to be matched with a shaft with a key. By this slip-free solution, the encoder is mechanically secured to the shaft, and will always detect even the smallest movements with certainty.

Leine & Linde is based in Sweden with exclusive North American distribution through HEIDENHAIN CORPORATION in Schaumburg, IL.