Functional Safety 2014

TÜV SÜD Product Service

Objectives

To allocate the safety functions, contained in the specification for the overall safety requirements

(both the safety functions requirements and the safety integrity requirements), to the designated

E/E/PE safety related systems and other risk reduction measures; To allocate a safety integrity

level to each safety function to be carried out by an E/E/PE safety-related system.

IEC 61508

Part 1 Clauses

7.6.1

7.6.2

IEC 62061

Clause 5

5.2.1.3 – Specifications

for each SRCF shall

comprise the functional

requirement (5.2.3)and

the safety integrity

requirement (5.2.4)

ISO 13849

Clause 4

4.2.2 – For each safety

function the

characteristics and the

required performance

level shall be specified

Overall safety requirements allocation