Safety switching system with several modules for making dangerous machinery has eleven plug-in modules connected together in three groups, having connections to muting sensors

摘要

A row of modules (1-11) have connections with muting sensors and other sensors on machinery. Signal sources are connected together in a logical fashion. Modules no. 4 and 8 are muting modules, and are connected to subsequent groups of modules using logical networks. The modules plug into identical sockets.