Related Manuals for Pepperl+Fuchs M-LB-21 Series
Summary of Contents for Pepperl+Fuchs M-LB-21 Series
- Page 1 PROCESS AUTOMATION MANUAL Functional Safety M-LB-(Ex-)2000-System Surge Protection Barriers ISO9001...
- Page 2 Functional Safety M-LB-(Ex-)2000-System With regard to the supply of products, the current issue of the following document is applicable: The General Terms of Delivery for Products and Services of the Electrical Industry, published by the Central Association of the Electrical Industry (Zentralverband Elektrotechnik und Elektroindustrie (ZVEI) e.V.) in its most recent version as well as the supplementary clause: "Expanded reservation of proprietorship"...
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Page 3: Table Of Contents
Functional Safety M-LB-(Ex-)2000-System Content Introduction ........... 4 Content of this Document. -
Page 4: Introduction
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. -
Page 5: Safety Information
Functional Safety M-LB-(Ex-)2000-System 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. -
Page 6: Symbols Used
Functional Safety M-LB-(Ex-)2000-System 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. -
Page 7: Product Description
Functional Safety M-LB-(Ex-)2000-System Product Description Product Description Function This manual describes solely the safety function and safe state of the surge protection barrier as part of the surge protection system. Danger! Danger to life from wrong usage of the device The protection of the safety loop against overvoltage is not the safety function of the surge protection barrier. -
Page 8: Interfaces
• Non-safety relevant interfaces: none Note! For corresponding connections see datasheet. Marking Pepperl+Fuchs GmbH Lilienthalstraße 200, 68307 Mannheim, Germany Internet: www.pepperl-fuchs.com Surge protection barrier M-LB-21**(.SP), M-LB-Ex-21**(.SP) Up to SIL 3 The *-marked letters of the type code are placeholders for versions of the device. -
Page 9: Planning
Functional Safety M-LB-(Ex-)2000-System 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. -
Page 10: Assumptions
Functional Safety M-LB-(Ex-)2000-System Planning Assumptions The following assumptions have been made during the FMEDA: • The device will be used under average industrial ambient conditions comparable to the classification "stationary mounted" according to MIL-HDBK-217F. Alternatively, operating stress conditions typical of an industrial field environment similar to IEC/EN 60654-1 Class C with an average temperature over a long period of time of 40 ºC may be assumed. -
Page 11: Safety Function And Safe State
Functional Safety M-LB-(Ex-)2000-System Planning Safety Function and Safe State The safety function of the surge protection barriers depends on the signal loop to which it is attached. The interference on safety relevant signals (e. g. 4 mA to 20 mA analog signal) that pass through the devices was evaluated. - Page 12 Functional Safety M-LB-(Ex-)2000-System Planning Safety Function The safety function of the surge protection barrier is to behave like a piece of copper wire, passing through the process signal without being altered. Reaction Time The reaction time is < 1 ms. Note! The fault indication output is not safety relevant.
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Page 13: Characteristic Safety Values
Functional Safety M-LB-(Ex-)2000-System Planning Characteristic Safety Values 1oo1 Structure Parameters Characteristic values Assessment type Full assessment Device type Mode of operation Low demand mode or high demand mode Safety function Pass through the signal Devices AI, AO, BI, BO, RTD 17.2 FIT 0 FIT ... -
Page 14: Useful Lifetime
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 60 °C. -
Page 15: Mounting And Installation
Functional Safety M-LB-(Ex-)2000-System Mounting and Installation Mounting and Installation Mounting and Installing the Device 1. Observe the 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 safety application. 5. -
Page 16: Operation
Functional Safety M-LB-(Ex-)2000-System 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. •... - Page 17 Functional Safety M-LB-(Ex-)2000-System Operation Leakage Current Measurement Device Step Measurement Expected result M-LB-2112(.SP) 1 V between terminals 4 and 5 Leakage current below 5 A 1 V between terminals 5 and 4 M-LB-Ex-2114(.SP) 1 V between terminals 4 and 5 Leakage current below 10 A 1 V between terminals 5 and 4 1 V between terminal 4 and ground...
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Page 18: Maintenance And Repair
Functional Safety M-LB-(Ex-)2000-System Maintenance and Repair Maintenance and Repair Danger! Danger to life from missing safety function Changes to the device or a defect of the device can lead to device malfunction. The function of the device and the safety function is no longer guaranteed. Do not repair, modify, or manipulate the device. -
Page 19: Application Examples
Functional Safety M-LB-(Ex-)2000-System Application Examples Application Examples This chapter shows how to integrate a surge protection barrier into a safety loop. Integration of a Surge Protection Barrier into a Safety Loop To define and calculate the safety relevant values for a low demand safety loop, you have to determine the following basic parameters first: 1. - Page 20 Application Examples Example 1 - Digital Input - NAMUR NE 22 Signals When using a standard isolated barrier from Pepperl+Fuchs, it is possible to implement low demand safety loops with SIL 2 with a standard NAMUR NE 22 digital input signal.
- Page 21 Functional Safety M-LB-(Ex-)2000-System Application Examples The corresponding surge protection barrier M-LB-Ex-2*** has the following performance values: 18.3 FIT total 1.1 FIT Table 7.2 The next step is to allocate the surge protection barrier to the isolated barrier by adding the total failure rates of both components.
- Page 22 Application Examples Example 2 - Digital Output – Solenoid Drivers The Pepperl+Fuchs digital output devices can be categorized into two groups – loop powered devices and bus powered devices. The calculation for both groups is identical except that values of the solenoid driver may be different.
- Page 23 Functional Safety M-LB-(Ex-)2000-System Application Examples Example 3 - Analog Inputs – 4 mA to 20 mA Signals Basic parameters: 1. Signal characteristic of the safety loop: analog 2-wire application 2. Signal direction of the safety loop as seen from the perspective of the safety-rated programmable logic controller (SPLC): input 3.
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Page 24: List Of Abbreviations
Functional Safety M-LB-(Ex-)2000-System List of Abbreviations List of Abbreviations Emergency Shutdown Failure In Time in 10 FMEDA Failure Mode, Effects, and Diagnostics Analysis 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 ... - Page 25 Functional Safety M-LB-(Ex-)2000-System Notes...
- Page 26 PROCESS AUTOMATION – PROTECTING YOUR PROCESS Worldwide Headquarters Pepperl+Fuchs GmbH 68307 Mannheim · Germany Tel. +49 621 776-0 E-mail: info@de.pepperl-fuchs.com For the Pepperl+Fuchs representative closest to you check www.pepperl-fuchs.com/contact www.pepperl-fuchs.com Subject to modifications DOCT-6304 Copyright PEPPERL+FUCHS • Printed in Germany 02/2019...