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Functional Safety KFD2-SR2-Ex*.W(.LB)

Operation

20

20

-0

5

19

Figure 5.1 Proof test set-up for KFD2-SR2-Ex1.W

Figure 5.2 Proof test set-up for KFD2-SR2-Ex1.W.LB

Multimeter

(mA)

Zone 0, 1, 2

Div. 1, 2

Zone 2

Div. 2

KFD2-SR2-Ex1.W

Multimeter

(mA)

Multimeter

(mA)

240 

:

/2.5 W

24 V DC

2+

3-

1+

7
8
9

I supply

14+

15-

R

LB

24 V DC

Power

supply

Supply

R

SC

Multimeter

(mA)

Zone 0, 1, 2

Div. 1, 2

Zone 2

Div. 2

KFD2-SR2-Ex1.W.LB

Multimeter

(mA)

R

LB

Multimeter

(mA)

240 

:

/2.5 W

24 V DC

Multimeter

(mA)

240 

:

/2.5 W

24 V DC

2+

3-

1+

7
8
9

10
11
12

14+

15-

I supply

24 V DC

Power

supply

Supply

R

SC

Содержание KFD2-SR2-Ex Series

Страница 1: ...ISO9001 2 Functional Safety Switch Amplifier KFD2 SR2 Ex W LB Manual...

Страница 2: ...ion as well as the supplementary clause Expanded reservation of proprietorship Worldwide Pepperl Fuchs Group Lilienthalstr 200 68307 Mannheim Germany Phone 49 621 776 0 E mail info de pepperl fuchs co...

Страница 3: ...Function 8 2 3 Interfaces 9 2 4 Marking 9 2 5 Standards and Directives for Functional Safety 9 3 Planning 10 3 1 System Structure 10 3 2 Assumptions 11 3 3 Safety Function and Safe State 12 3 4 Charac...

Страница 4: ...Functional Safety KFD2 SR2 Ex W LB Contents 4 2020 05...

Страница 5: ...ting Dismounting Disposal The documentation consists of the following parts Present document Instruction manual Manual Datasheet Additionally the following parts may belong to the documentation if app...

Страница 6: ...nd understood the instruction manual and the further documentation Intended Use The device is only approved for appropriate and intended use Ignoring these instructions will void any warranty and abso...

Страница 7: ...re displayed in descending order as follows Informative Symbols Action This symbol indicates a paragraph with instructions You are prompted to perform an action or a sequence of actions Danger This sy...

Страница 8: ...om NAMUR sensors or dry contacts from the hazardous area to the non hazardous area The proximity sensor or switch controls a change over relay contact for the load in the non explosion hazardous area...

Страница 9: ...Directives for Functional Safety Device specific standards and directives System specific standards and directives Note For corresponding connections see datasheet Pepperl Fuchs Group Lilienthalstra e...

Страница 10: ...he demand rate for this safety loop is assumed to be higher than once per year The relevant safety parameters to be verified are the PFH value Probability of dangerous Failure per Hour Fault reaction...

Страница 11: ...must be multiplied by a factor of 2 5 based on experience A similar factor must be used if frequent temperature fluctuations are expected SIL 2 application To build a SIL safety loop for the defined...

Страница 12: ...fe state is reached if the NAMUR sensor input is in the on state S2 position I output II as signal output Output II has the same switching state like output I S2 position II output II as fault indicat...

Страница 13: ...sions are supervised The line fault detection is activated if switch S3 is in position I The related safety function is defined as the outputs are de energized safe state if there is a line fault dete...

Страница 14: ...oof test In loop proof test PTC 100 90 PFDavg for T1 1 year 3 1 65 x 10 4 3 15 x 10 4 PFDavg for T1 2 years 3 3 31 x 10 4 4 64 x 10 4 PFDavg for T1 3 years 3 4 96 x 10 4 6 13 x 10 4 Fault reaction tim...

Страница 15: ...o the following conditions highly stressful environmental conditions such as constantly high temperatures temperature cycles with high temperature differences permanent repeated mechanical stress vibr...

Страница 16: ...n 5 Check the safety function to ensure the expected output behavior 4 1 Configuration Configuring the Device The device is configured via DIP switches The DIP switches for setting the safety function...

Страница 17: ...n of the respective effectiveness e g concepts according to NA106 2018 According to IEC EN 61508 2 a recurring proof test shall be undertaken to reveal potential dangerous failures that are not detect...

Страница 18: ...ge detection Test each input channel individually 4 Connect a potentiometer of 4 7 k threshold for normal operation to the input The threshold must be between 1 4 mA and 1 9 mA the hysteresis must be...

Страница 19: ...Zone 0 1 2 Div 1 2 Zone 2 Div 2 KFD2 SR2 Ex1 W Multimeter mA Multimeter mA 240 2 5 W 24 V DC 2 3 1 7 8 9 I supply 14 15 RLB 24 V DC Power supply Supply RSC Multimeter mA Zone 0 1 2 Div 1 2 Zone 2 Div...

Страница 20: ...can also use documented switching actions for verification within the framework of regular proof test intervals The calculated values correspond to the values in the Characteristic Safety Values table...

Страница 21: ...s not work Take appropriate measures to protect personnel and equipment while the safety function is not available Secure the application against accidental restart 3 Do not repair a defective device...

Страница 22: ...safety function Probability of failure of components that are in the safety loop HFT Hardware Fault Tolerance MTBF Mean Time Between Failures MTTFD Mean Time To dangerous Failure MTTR Mean Time To Re...

Страница 23: ...Functional Safety KFD2 SR2 Ex W LB Notes 2020 05 23...

Страница 24: ...Pepperl Fuchs Quality Download our latest policy here www pepperl fuchs com quality www pepperl fuchs com Pepperl Fuchs Subject to modifications Printed in Germany DOCT 6656A...

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