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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
General: 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
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.
Calculation of “non-electrotechnical components” permissible on the basis of IEC 62061
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
Stopping in an emergency
3SB3 Pushbuttons and Indicator Lights: Statement regarding B10 value and RDF for a contact element
SIRIUS Safety Integrated: Emergency stop shutdown via AS-i to SIL 3 or PL e with a Modular Safety System
SIRIUS Safety Integrated: Emergency stop shutdown to SIL 3 or PL e with a Modular Safety System
SIRIUS Safety Integrated: Emergency stop shutdown to SIL 3 or PL e with a safety relay
SIRIUS Safety Integrated: Emergency stop shutdown to SIL 1 or PL c with a Modular Safety System
SIRIUS Safety Integrated: Emergency stop shutdown to SIL 1 or PL c with a safety relay
3SB Pushbuttons and Indicator Lights: Are Protective collars for EMERGENCY-STOP approved?
Disconnecting series connected EMERGENCY-STOP commanding devices represents individual supplementary safety function by EN 62061
Disconnecting series connected EMERGENCY-STOP commanding devices represents individual supplementary safety function by EN 62061
Part number:

QUESTION:

If several EMERGENCY-STOP commanding devices are electrically connected in series, does every safety-related disconnection via an EMERGENCY-STOP commanding device represent an individual supplementary safety function ?


ANSWER:

IEC 62061 – Application Explanations:

If several EMERGENCY-STOP commanding devices are electrically connected in series, every safety-related disconnection via an EMERGENCY-STOP commanding device represents an individual supplementary safety function.

 

The explanations in attached document are to address these issues.

Anymore questions?
Please consult Siemens Low Voltage Switchgear - Technical Assistance via mail adress or phone number, as shown in the header of the attached document.


IEC62061_Info_3_en.pdf ( 35 KB )


 Entry ID:35444028   Date:2009-04-21 
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