How to clear the delay calculagraph when the alarm return to normal?

Issue

If at the end of the alarm delay time the point is in alarm, Continuum will generate the alarm notification regardless of how many times the point has RTN during the delay period. if the point go to alarm again, Continuum will generate the alarm soon.

The customer challenge us on this issue, they think the alarm delay calculagraph should be clear when the point has RTN.

 

 

 

Product Line

Andover Continuum

Environment

Continuum

Cyberstation

IP level controller

Field Controller

Cause

Need a solution to meet the customer's requirements.

Resolution

  1. Create an infinityNumeric  point to trigger the alarm
  2. Create an program to set the alarm point to on/off

For Example:

The original alarm point is Fanfault, and delay time setting in the AlarmEnrollment is 60 seconds

Create on infinitynumeric named Fan_alarm and attached a AlarmEnrollment with delay setting.

Create an program as below:

Line detecting:

Fan_alarm=off

if Fanfault is on then go to setting

Line setting

if Ts>=60 then Fan_alarm=on

if Fanfault is off then goto detecting

Line E

state=enabled

if ts>1 then go to detecting

 

More detail about AlarmDelay Operation ,pls find the article LL#12067

http://buildingskb.schneider-electric.com/view.php?AID=12067