SIL 3 application, Reset trip from HMI


I just wonder if anyone has a hint about resetting trip signal from HMI.

In Siemens you have to write a 6 and then a 9 to a special function block (F_QUITES) from HMI. If this is done wrong the reset will not be activated.

I can't find any SIL FB in ABB for this purpose. I don't think resetting from NonSIL and sending the signal to SIL is acceptable.

How have you people solved this?

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Mr Control   

asked 2 months ago



Ideally, we connect the shutdown devices to a shutdown level, where we have option of resetting the trip signal (once it is normalized). There are customized library solutions from ABB, as well standard.

You can refer to SDLevel fucntion block from SupervisionBasicLib, where Reset command on faceplate can do the work when configured to the causes and effects.

REUSE library has LB module which does the similar work like SDLevel, mainly for OG field (NORSOK compliant).


answered 2 months ago


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You can make HMI operations to writable OPC Properties in SIL applications but operation must be confirmed by the operator. Have a search for "Confirmed write support"


answered 2 months ago


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