DANSK DS/EN 954-1 PDF

This European Standard provides safety requirements and guidance on the principles for the design of the safety-related parts of control systems. For these parts it specifies categories and describes the characteristics of their safety functions. This includes programmable systems for all machinery and for related protective devices. It applies to all safety-related parts of control systems, regardless of the type of energy used e.g. electrical, hydraulic, pneumatic, mechanical.