anx_I__cpt_1__cpt_1__cpt_2__cpt_11__cpt_1
2.11.1. Safety accessories shall: be so designed and constructed as to be reliable and suitable for their intended duty and take into account the maintenance and testing requirements of the devices, where applicable, be independent of other functions, unless their safety function cannot be affected by such other functions, comply with appropriate design principles in order to obtain suitable and reliable protection. These principles include, in particular, fail-safe modes, redundancy, diversity and self-diagnosis.
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Source: EUR-Lex (Cellar) · retrieved 2026-11-02 · Text as adopted (Official Journal); later amendments are not incorporated in this text.