Safety of machinery – Safety-related parts of control systems – Part 1: General principles for design
This part of ISO 13849 provides safety requirements and guidance on the principles for the design and integration of safety- related parts of control systems (SRP/CS), including the desig n of software. For these parts of SRP/CS, it specifies characteristics that include the performance level required for carry ing out safety functions. It applies to SRP/CS, regardless of the type of technology and energy used (electrical, hydraulic, pneumatic, mechanical, etc.), for all kinds of machinery.