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ManualsBrandsRockwell Automation ManualsEquipmentAADvance Controller PFH avg and PFD avg Data

Document: 553847

(ICSTT-RM449_EN_P) Issue 04:

1-1

The information in this document has been compiled as part of the AADvance IEC

61508 certification, the failure modes and Failure Mode Effect and Diagnostic Analysis

(FMEDA) of each module having been inspected by TUV Rheinland.

The tables below provide PFD

avg

data for AADvance modules used in applications with

an 8 or 24 hour MTTR and with 6 months, 1 year, 5 years or 10 years Manual Test

Interval (MTI). If the AADvance system is to be used in an application with any other

MTTR or MTI, use the data from the next column with a higher MTTR or MTI than

that of the application.

If a de-energize to action system is configured to provide a shutdown on the first fault,

the MTTR has a negligible effect, hence, the tables in the PFD Data can be used for any

MTTR.

In This Chapter

In This ChapterIn This Chapter

In This Chapter

Failure Rates ......................................................................................................... 1-1

PFD Data - 8 Hour MTTR ................................................................................ 1-2

PFD Data - 24 Hour MTTR ............................................................................. 1-4

PFH Data............................................................................................................... 1-6

Safe Failure Fraction (SFF) and Hardware Fault Tolerance (HFT) .......... 1-8

System Configurations ....................................................................................... 1-9

Failure Rates

Failure RatesFailure Rates

Failure Rates

The following failure rates apply to the AADvance modules:

Table 1:

Table 1: Table 1:

Table 1: AADvance Module Failure Rates

AADvance Module Failure RatesAADvance Module Failure Rates

AADvance Module Failure Rates

Module Module Description

MTBF

Years

FPMHλ

λλ

T9110 Processor module 95 1.19

T9401 Digital input module, 24Vdc, 8 channel, isolated 93 1.22

T9402 Digital input module, 24Vdc, 16 channel, isolated 50 2.28

T9431 Analogue input module, 8 channel, isolated 93 1.22

T9432 Analogue input module, 16 channel, isolated 50 2.28

T9451 Digital output module, 24Vdc, 8 channel, isolated,

commoned

95 1.19

T9481 Analogue output module, 3 channel, isolated 110 1.04

T9482 Analogue output module, 8 channel, isolated 47 2.39

Chapter

Chapter Chapter

Chapter

Introduction

IntroductionIntroduction

Introduction