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 Pepperl+Fuchs products with functional safety, see www.pepperl-fuchs.com/sil.
Functional Safety KFD0-SD2-Ex2.1*45 Introduction Safety Information Target Group, Personnel Responsibility for planning, assembly, commissioning, operation, maintenance, and dismounting lies with the plant operator. Only appropriately trained and qualified personnel may carry out mounting, installation, commissioning, operation, maintenance, and dismounting of the product. The personnel must have read and understood the instruction manual and the further documentation.
Functional Safety KFD0-SD2-Ex2.1*45 Introduction Symbols Used This document contains symbols for the identification of warning messages and of informative messages. Warning Messages You will find warning messages, whenever dangers may arise from your actions. It is mandatory that you observe these warning messages for your personal safety and in order to avoid property damage.
Functional Safety KFD0-SD2-Ex2.1*45 Planning Planning System Structure 3.1.1 Low Demand Mode of Operation If there are two control loops, one for the standard operation and another one for the functional safety, then usually the demand rate for the safety loop is assumed to be less than once per year.
Functional Safety KFD0-SD2-Ex2.1*45 Planning Assumptions The following assumptions have been made during the FMEDA: • Failure rate based on the Siemens standard SN 29500. • Failure rates are constant, wear is not considered. • The safety-related device is considered to be of type A device with a hardware fault tolerance of 0.
Functional Safety KFD0-SD2-Ex2.1*45 Planning Characteristic Safety Values Parameters Characteristic values Assessment type and Full assessment documentation Device type Mode of operation Low demand mode oder high demand mode Safety function Output is de-energized 135 FIT 0 FIT 0.08 FIT ...
As noted in DIN EN 61508-2:2011 note N3, appropriate measures taken by the manufacturer and plant operator can extend the useful lifetime. Our experience has shown that the useful lifetime of a Pepperl+Fuchs product can be higher if the ambient conditions support a long life time, for example if the ambient temperature is significantly below the maximum ambient temperature.
Functional Safety KFD0-SD2-Ex2.1*45 Mounting and Installation Mounting and Installation Mounting and Installing the Device Observe the safety instructions in the instruction manual. Observe the information in the manual. Observe the requirements for the safety loop. Connect the device only to devices that are suitable for this safety application. Check the safety function to ensure the expected output behavior.
Functional Safety KFD0-SD2-Ex2.1*45 Operation Operation Danger! Danger to life from missing safety function If the safety loop is put out of service, the safety function is no longer guaranteed. • Do not deactivate the device. • Do not bypass the safety function. •...
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Functional Safety KFD0-SD2-Ex2.1*45 Operation Proof Test Procedure Prepare a test set-up, see figure below. Verify the input and output values as given in table below. After the test, reset the device to the original settings. Step No. Input value Output value 18 V (high) ON/I current, depends on device version...
Report all failures in the safety function that are due to functional limitations or a loss of device function – especially in the case of possible dangerous failures. In these cases, contact your local sales partner or the Pepperl+Fuchs technical sales support (service line).
Functional Safety KFD0-SD2-Ex2.1*45 List of Abbreviations List of Abbreviations Emergency Shutdown Failure In Time in 10 Failure Mode, Effects, and Diagnostics Analysis FMEDA Probability of safe failure Probability of dangerous detected failure Probability of dangerous undetected failure Probability of failures of components in the safety loop that have ...