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Achieve functional safety SIL2 and PLd category 3 in accordance with EN ISO 13849-1 with the FSI 800 series from Leine Linde. These functionally safe heavy duty incremental encoders are made with a slip-free shaft or hollow-shaft construction.
The square wave signals are monitored internally in the FSI 800 series encoders. If faults are detected, the encoder signals will enter safe state, or indicate faults via the status output. Thanks to the integrated safety solution, a second encoder or sensor for redundancy will no longer be needed for a functionally safe installation. This will save space and reduce the need for cables, which even further decreases the system’s vulnerability to environmental factors, disturbances, wear and tear.
The FSI 800 series fulfills the mechanical fault exclusion requirement due to the slip-free solution for the shaft installation. The FSI 862 hollow shaft encoder contains a guiding pin which requires a matching adapter shaft to be mounted. The FSI 850 shaft encoder has a key nut on to the shaft ensuring safe mounting in couplings with keyway.
Up until now, the only single encoder solution available on the market has been using a 1Vpp signal, which is not appropriate in these harsh environments, due to its weak signal of 5 Vdc. Therefore, the solution is the FSI 800 series with HCHTL signals for 9-30 Vdc, which also meets the demand for long cables (over 300 metres). This is perfectly designed for critical applications such as those in the steel and the paper industry, where production runs for 24 hours per day, seven days a week, protected in accordance with the requirements for SIL2/PLd, category 3, machinery directive in related C-standard.
Leine Linde FSI 800 系列获得功能安全 SIL2 和 Pld 类别三，符合 EN ISO 13849-1。这些功能安全重型增强式编码器都包含防滑主轴或空心轴结构。
FSI 800 系列编码器的方波信号能进行内部监控。如果发现故障，编码器信号会进入安全状态或通过状态输出提示故障。采用一体化安全解决方案，不再需要为冗余信号准备额外的编码器或传感器以进行功能安全安装。在节省空间、减少电缆使用的同时，进一步降低了环境因素、干扰和磨损对系统的损害。
FSI 800 系列采用主轴防滑方案，以满足机械故障排除要求。FSI 862 空心轴编码器包含一个引导针，它需要和一个匹配的主轴一起才能安装。FSI 850 主轴编码器在主轴上拥有一个键，它能通过键槽确保和适配轴的安全安装。
到目前为止，市场上仅有的安全单编码器解决方案 使用的是 1 Vpp 信号，由于 5 Vdc 电源较弱，因此并不适用于恶劣环境。因此，其解决方案是使用 9-30 Vdc 的 HCHTL 信号的 FSI 800 系列 ，在长距离（超过 300 米）情况下也能满足需求。这是为关键应用（例如炼钢和造纸厂，这些工厂需要一周 7 天，每天 24 小时的生产）完美设计的，符合 SIL2/PLd，类别三的全部要求和相关 C-标准中的设备规范，并受其保护。
