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Safety Integrated - Functional Safety in machines and plants
Combination of a Power Contactor and a Circuit-Breaker (with undervoltage release) in safety function can be evaluated according to IEC 62061 and ISO 13849-1
Evaluation of a safety function by using SIMATIC S7 "standard output cards" switched off by the load voltage
How can I find the standard B10 values and ratio of dangerous failures (RDF) of electrical and mechanical components?
3TF5 Contactors: B10 values and ratio of dangerous failures (RDF)?
Define of Diagnostic Coverage and maximum achievable Systematic Safety Integrity for subsystem resp. SRP/CS with electromechanical components
SIRIUS 3SE5: Functional Safety - One Position Switch
Calculation of “non-electrotechnical components” permissible on the basis of IEC 62061
SIRIUS 3RA6 Reversing Starter with AS-i Mounting Module: Local Safety Shutdown at SIL 1 due to IEC 62061 / PL c due to EN ISO 13849-1:2006
SIRIUS 3RA6 with AS-i Mounting Module: Local Safety Shutdown at SIL 1 due to IEC 62061 / PL c due to EN ISO 13849-1:2006
How to understand the PFHD values in the informative annex K, table K.1 of the standard ISO 13849-1
Performance Level PL d with Category 3 (ISO 13849-1) or SIL 2 (IEC 62061) using only 1 SIRIUS Position switch with or without solenoid interlocking or only 1 SIRIUS Hinge switch is achievable
Programmable electronic control components (e.g. standard PLC or standard AS-i) and application of ISO 13849-1
Disconnecting series connected EMERGENCY-STOP commanding devices represents individual supplementary safety function by EN 62061
SILCL 1 is attainable with a subsystem consisting of an electromechanical component and a 1-channel architecture.
Attainable SIL acc. to IEC 61511 of subsystems or subsystem elements consisting of SIRIUS components with low demand mode acc. to IEC 61508
3WL - B10/B10d values and part of dangerous failures
Combination of a Power Contactor and a Circuit-Breaker (with undervoltage release) in safety function can be evaluated according to IEC 62061 and ISO 13849-1
Part number:

 

Question:
With which safety integrity according to IEC 62061 and ISO 13849-1 can a combination of a power contactor and a circuit-breaker (with undervoltage release) be assessed in a safety function?

Answer:
Max. SIL 2 according to IEC 62061 or PL d in accordance with ISO 13849-1 can be achieved in conjunction with a safety-related evaluation, for instance a fail-safe controller or a safety relay.

The attached document explains the entire issue in details.


 40349715_FAQ_functional_safety_circuit_breaker_en_2013_12.pdf (1620 KB) ( 1620 KB )

Attachments::

ZIP file including following four files:

  1. Project file for the Modulare Safety System MSS
     
  2. SET project file in german
     
  3. SET project file in english
     
  4. Informations regarding mirror contacts
     

 FAQ_40349715_2013_12.zip ( 547 KB )

Search items:

NOT-HALT NOT-AUS E-STOP EMERGENCY-STOP EMERGENCY-Shut-Down Netztrenneinrichtung spannungsfreischalten Stillsetzen shutdown im Notfall Sicherheitskategorie safety category Redundanz redundancy SET Sistema safety reliability Zuverlässigkeit Ausfallrate failure rates MTTF_d MTTFd MTBF FIT B10 Percenteage Percentage Ratio of dangerous failures faults Anteil gefahrbringender Ausfälle SIL PL KAT

 

 Entry ID:40349715   Date:2014-03-11 
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