Emerson Exchange 365

SIS Problem

Hi all, 

Looking for some advice on a annunciatior problem.

Basically I have one common window on a annunciatior panel which should trigger on any 1 of 25 inputs.

If a alarm is already standing (annunciator already activated) and another input were to trip it would need to re-trigger  the annunciator and same for 3rd, 4th, 5th etc....

The problem I am having is a cause and effect matrix only allows 16 input, I have attempted the possibility of using two but writing to one parameter or DO from two effects is not possible.

Can anyone suggest ways around this or maybe another function block I could use.

Thanks

Mambo

• 27 Oct 2012 8:50 AM
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3 Replies

• Gary Law

  

  • 27 Oct 2012 5:34 PM

  This sounds almost the same proble as you posted previously "Delta V SIS - Logic Problem", which myself and others answered.

  The solution is basically the same - just extend the logic in the calc block to look at 2 CEM blocks .....

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• Roman Kostuniak

  

  • 27 Oct 2012 6:24 PM

  In reply to Gary Law:

  I don't know your logic...

  try this: effect from CEM1 is cause in CEM2.

  DO is connected to CEM2.

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• Roman Kostuniak

  

  • 29 Oct 2012 7:28 AM

  In reply to Roman Kostuniak:

  And this IS NOT "SIS Problem"

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