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Energize-to-action 1-year proof test interval – Rockwell Automation 1715-OF8I Redundant I/O System User Manual User Manual

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298

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014

Appendix E

PFD and PFH Calculations for a SIL 2 System

Energize-to-action 1-year Proof Test Interval

Table 71 - Energize-to-action 1-year Proof Test Interval

MTTR 24 Hours

PTI 1.0 Years

Simplex Configuration

Duplex Configuration

Ca

t N

o.

Se

rie

s

Firm

w

are

Ve

rs

io

n

Des

cr

ip

tio

n

MT

BF

λs

λdu

λdd

SF

F

tce'

HFT

PFH

e

PFDe

ST

R

β

βd

tce'

tg

e'

HFT

PFH

e

PFDe

Ar

ch

ST

R

1715-
AENTR

A

2.001 EtherNet

adapter

dual

module

841,9

73

7.07E-

07

1.67E-

08

4.89E-

07

93

.55%

N/A

N/A

N/A

N/A

N/A

1.0

%

1.0

%

1.59E+

02

1.14E+

02

1

5.07E-

09

8.55E-

07

1oo2D

7.07E-

08

1715-
IB16D

A

2.001 16-

channel

digital

input

module

3,5

35,79

1

1.88

E-

07

1.02

E-

09

1.44

E-

07

99

.30%

5.47

E+

01

0

1.11

E-

09

8.35

E-

06

3.33

E-

07

1.0

%

0.5

%

3.75

E+

01

3.30

E+

01

1

8.22

E-

10

4.60

E-

07

1oo2

D

1.88

E-

09

1715-
IF16

A

2.001 16-

channel

analog

input

module

3,53

5,791

1.88

E-07

1.02

E-09

1.44

E-07

99.3

0%

5.47

E+01

0

1.11

E-09

8.35

E-06

3.33

E-07

1.0%

0.5%

3.75

E+01

3.30

E+01

1

8.22

E-10

4.60

E-07

1oo2D

1.88

E-09

1715-
OB8DE

A

2.001 16-

channel

digital

output

module

9,677,0

85

1.22E-

07

8.63E-

09

3.53E-

07

97

.61%

1.29E+

02

0

8.63E-

09

4.65E-

05

4.74E-

07

1.0

%

1.0

%

1.29E+

02

9.37E+

01

1

3.65E-

09

4.68E-

07

1oo2

1.22E-

09

1715-

OF8I

A

2.001 16-

channel

analog

output

module

5,44

6,17

9

3.56

E-07

3.32

E-08

4.71

E-07

93

.42%

3.12

E+0

2

0

3.36

E-08

1.60

E-04

8.27

E-07

1.0%

0.5%

3.12

E+0

2

2.16

E+0

2

1

3.24

E-09

4.21

E-06

1oo2

3.56

E-09