Endress+Hauser RMA422 Functional Safety Manual
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Endress+Hauser RMA422 Functional Safety Manual

Endress+Hauser RMA422 Functional Safety Manual

Process transmitter
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Functional safety manual
RMA422
Process Transmitter
Application
1 to 2-channel transmitter power supply with
intrinsically safe current inputs, limit value monitoring
with 2 change-over contacts, mathematic functions and
1 to 2 analog outputs to satisfy particular safety systems
requirements as per IEC 61508/ IEC 61511-1 (FDIS).
The measuring device fulfils the requirements
concerning
• Functional safety as per
IEC 61508/IEC 61511-1
• Explosion protection (depending on the version)
• Electromagnetic compatibility as per IEC 61326.
SD009R/09/en
Your benefits
• Use in a safety-instrumented system up to SIL 2,
independently evaluated (Functional Assessment) by
exida.com as per IEC 61508/
IEC 61511-1

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Summary of Contents for Endress+Hauser RMA422

  • Page 1 Functional safety manual RMA422 Process Transmitter Application Your benefits 1 to 2-channel transmitter power supply with • Use in a safety-instrumented system up to SIL 2, intrinsically safe current inputs, limit value monitoring independently evaluated (Functional Assessment) by with 2 change-over contacts, mathematic functions and exida.com as per IEC 61508/...

  • Page 2: Table Of Contents

    Determining the Safety Integrity Level (SIL) ....4 Safety function with RMA422 ....5 Safety function for limit temperature monitoring .

  • Page 3: Sil Declaration Of Conformity

    SIL Declaration of Conformity Functional safety of a process transmitter according to IEC 61508/IEC 61511 Endress+Hauser Wetzer GmbH+Co. KG, Obere Wank 1, 87484 Nesselwang declares as manufacturer, that the process transmitter RMA 422 is suitable for the use in a safety-instrumented system according to standard IEC 61511-1, provided the relevant safety instructions are observed.

  • Page 4: Introduction

    • Hardware Fault Tolerance (HFT) and • Safe Failure Fraction (SFF). The specific safety-related parameters for the RMA422, as a part of a safety function, are listed in the "Safety- related parameters" chapter. The following table displays the dependence of the "Safety Integrity Level" (SIL) on the "Average Probability of Failure on Demand"...

  • Page 5: Safety Function With Rma422

    – The adjustment level of the process-related parameters of the device is protected, e.g. by jumper, password (here: numeric code or key combination) – The function has a "Safety Integrity Level" (SIL) requirement less than 4. All conditions are true for the RMA422. Safety function with RMA422 Safety function for limit...

  • Page 6: Safety Function Data

    PLC. The limit values can also be monitored directly with the RMA422 by means of 2 change- over contacts.

  • Page 7: Commissioning And Iterative Tests

    Settings It is possible to set up on the RMA422. When used as part of a safety function, an analog signal or a limit relay can be used. Please refer to the following table for information on the settings which are permitted or not when using the RMA422 in a safety-related application.

  • Page 8: Safety-Related Parameters

    3,00E-03 2,50E-03 2,00E-03 1,50E-03 1,00E-03 5,00E-04 0,00E+00 Years PFDavg Fig. 4: "Average probability of dangerous failure on demand" (PFD ) depending on the maintenance interval selected for the RMA422 with analog input 4-20 mA and analog output 4-20 mA. Endress+Hauser...
  • Page 9 PFDavg Fig. 5: "Average probability of dangerous failure on demand" (PFD ) depending on the maintenance interval selected for the RMA422 with 2 analog inputs 4-20 mA and analog output 4-20 mA. 1oo1D st ru ct ure 4,50E-03 4,00E-03 3,50E-03...

  • Page 10: Repair

    PFDavg Fig. 7: "Average probability of dangerous failure on demand" (PFD ) depending on the maintenance interval selected for the RMA422 with 2 analog inputs 4-20 mA and relay. Repair Repair Note! Together with the failed, SIL-marked E+H device, having been operated in a functional safety application, the form "Declaration of Hazardous Material and De-Contamination"...

  • Page 11: Exida.com Management Summary

    RMA422 Exida.com management summary Endress+Hauser...
  • Page 12 RMA422 Endress+Hauser...

  • Page 13: Declaration Of Hazardous Material And De-Contamination

    Declaration of Hazardous Material and De-Contamination Erklärung zur Kontamination und Reinigung Please reference the Return Authorization Number (RA#), obtained from Endress+Hauser, on all paperwork and mark the RA# RA No. clearly on the outside of the box. If this procedure is not followed, it may result in the refusal of the package at our facility.
  • Page 14 Instruments International Endress+Hauser Instruments International AG Kaegenstrasse 2 4153 Reinach Switzerland Tel. +41 61 715 81 00 Fax +41 61 715 25 00 www.endress.com info@ii.endress.com SD009R/09/en/13.10 FM+SGML 6.0 ProMoDo...

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