Emerson Exchange 365

Is there any control module parameter that indicates that alarm has been suppressed?

Hi,

We are configuring a control module, for instance standard PID: FIC101 module with HI, HIHI, LO, LOLO, Deviation, IO BAD, Simulation alarms. We would like to have a control module level parameter that can tell this FIC101 has any suppressed alarm(s) in general, whether the alarm(s) active or inactive.

OPSUP is parameter field and if we use this parameter field we have to configure for each alarm type. For example, an FIC101 module, we have to configure FIC101/HI_ALM.F_OPSUP, FIC101/HI_HI_ALM.F_OPSUP, FIC101/LO_ALM.F_OPSUP, FIC101/LO_LO_ALM.F_OPSUP. For some plants, they have custom alarms added with standard alarms. If we follow method of using OPSUP parameter field, this would increase significantly the datalink counts for one graphic.

Our goal is to place a dynamo on graphic that will have a colored box around it, whenever assigned module has any suppressed alarm(s). This will raise the awareness of operators during normal operation, without checking Suppressed Alarm graphic.

Any ideas would be much appreciated.

Thanks,

• DeltaV Operate
• alarms
• OPSUP
• suppressed alarms
• DeltaV
• graphic

Ngoc Pham

• 31 Jan 2018 7:24 PM
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1 Reply

• Matt Stoner

  

  • 31 Jan 2018 7:54 PM

  I would suggest adding and configuring a Condition Block in your modules that does all the OPSUP checking and then reference the OUT_D of this block from the graphics for your indication (use PRE_OUT_D if you don't want a tuned disable to override the indication).
  
  Since this is an "abnormal" event you should add a scan multiplier on the condition block to not run all the time to help decrease the added controller load of adding this functionality. I would suggest starting at 10x scan multiplier as most things probably execute at 5 sec or faster which means the slowest it would update is every 50 sec and fastest would be every sec and adjust to what update rates you are OK with.
  
  Also since it is a condition you could make the conditions also check if the alarm is enabled as well so you don't have an indication of suppressed alarm that isn't enabled just in case someone has done that.

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