Reliability, Availability And Safety Of Electronic Control Systems - Siemens SIMATIC S5-115F User Manual

9

Reliability, Availability and Safety of Electronic Control Systems

9.1 Reliability of Electronic Control Systems
9.1.1 Failure Characteristics of Electronic Devices . . . . . . . . . . . . . . . . . . . . . 9 - 2
9.1.2 Reliability of SIMATIC S5 Programmable Controllers and
Components
9.1.3 Failure Distribution
9.2 Availability of Electronic Control Systems
9.2.1 Overview
9.2.2 Availability of the S5-115F Programmable Controller
9.3 Safety of Electronic Control Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 5
9.3.1 Safe Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.3.2 Safe Binary Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 6
EWA 4NEB 811 6148-02
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 3
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. . . . . . . . . . . . . . . . . . . . . . . . 9 - 1
. . . . . . . . . . . . . . . . . . . . . . 9 - 3
. . . . . . . . . . . . 9 - 4
9 - 2
9 - 3
9 - 5