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Functional Safety KFD0-CS-(Ex)*.50(P), KFD0-CS-(Ex)*.51(P)

Introduction

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Introduction

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Content of this Document

This document contains information for usage of the device in functional safety-related 

applications. You need this information to use your product throughout the applicable stages 

of the product life cycle. These can include the following:

Product identification

Delivery, transport, and storage

Mounting and installation

Commissioning and operation

Maintenance and repair

Troubleshooting

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 applicable:

EU-type examination certificate

EU declaration of conformity

Attestation of conformity

Certificates

Control drawings

FMEDA report

Assessment report

Additional documents

For more information about Fuchs products with functional safety, 

see www.pepperl-fuchs.com/sil.

Note

This document does not substitute the instruction manual.

Note

For full information on the product, refer to the instruction manual and further documentation 

on the Internet at www.pepperl-fuchs.com.

Summary of Contents for KFD0-CS .50 Series

Page 1: ...ISO9001 2 Functional Safety Current Driver Repeater KFD0 CS Ex 50 P KFD0 CS Ex 51 P Manual...

Page 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...

Page 3: ...Function 8 2 2 Interfaces 9 2 3 Marking 9 2 4 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 11 3 4 Charac...

Page 4: ...Functional Safety KFD0 CS Ex 50 P KFD0 CS Ex 51 P Contents 4 2021 07...

Page 5: ...ubleshooting Dismounting Disposal The documentation consists of the following parts Present document Instruction manual Manual Datasheet Additionally the following parts may belong to the documentatio...

Page 6: ...e read and 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...

Page 7: ...sages are 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...

Page 8: ...FD0 CS 51 P This signal conditioner provides the galvanic isolation between field circuits and control circuits The device transfers DC signals of fire alarms and smoke alarms from the field side to t...

Page 9: ...ic standards and directives Note For corresponding connections see datasheet Pepperl Fuchs Group Lilienthalstra e 200 68307 Mannheim Germany Internet www pepperl fuchs com KFD0 CS 1 50 KFD0 CS 2 50 KF...

Page 10: ...n then usually the 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...

Page 11: ...le that this device uses 10 of the available budget for PFDavg PFH For a SIL 2 application operating in low demand mode the total PFDavg value of the SIF Safety Instrumented Function should be smaller...

Page 12: ...fety function Current driver Repeater s 1 1 No effect failures are not influencing the safety function and are therefore not included in SFF and in the failure rates of the safety function 57 FIT 0 FI...

Page 13: ...t It is assumed that early failures are detected to a huge percentage during the installation and therefore the assumption of a constant failure rate during the useful lifetime is valid However accord...

Page 14: ...safety instructions in the instruction manual 2 Observe the information in the manual 3 Observe the requirements for the safety loop 4 Connect the device only to devices that are suitable for this saf...

Page 15: ...ied PFDavg in accordance with the characteristic safety values provided See chapter 3 4 It is under the responsibility of the plant operator to define the type of proof test and the interval time peri...

Page 16: ...ent mA Measurement point Input current mA all devices Output voltage V 50 devices Output voltage V 51 devices 4 00 0 00 0 00 0 20 n a 4 00 1 00 10 00 0 00 0 00 0 20 9 00 1 00 10 00 1 00 35 00 4 00 4 0...

Page 17: ...mA 0 2 mA 4 Connect a a load resistor of 1 k Set the current source to 4 mA The output current must be 4 0 mA 0 2 mA 5 After the test reset the device to the original settings 6 Connect the field circ...

Page 18: ...re is a defect always replace the device with an original device Reporting Device Failure If you use the device in a safety loop according to IEC EN 61508 it is required to inform the device manufactu...

Page 19: ...part Probability of failure of components that are not in the safety loop total safety function Probability of failure of components that are in the safety loop HFT Hardware Fault Tolerance MTBF Mean...

Page 20: ...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 4073A...

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