TDC-3000/TPS Honeywell DCS History Groups

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Thread Starter

Rahul P Sharma

We have Honeywell's Total Plant Solution System for our Boiler Plant... Recently we had a complete blackout and we had to start the system from power on Stage, one by one...

Amongst other things, it's observed that the Trending display of all parameters is missing... I checked in the HM History Groups and found that the parameters Historised earlier could be seen... (For instance reconstituting a Historization Group 1 will show me all the parameters entered for historization... But the Standard Archiving feature is Marked as OFF... and it's not even a clickable link so there is no way to turn it on...!!)... After reconstituting the Historization Group, Say 1, of a particular Unit, say G3, I reloaded it (Ctrl + F12)... Still there is no trending...

Can anyone help??
au revoir
Rahul
 
History collection must be enabled on each HM in your system that is configured with history groups. Go to HM STATUS display, select the HM, touch the HIST COL target and set it to ENABLE.

When the entire LCN went down in the power outage, the system clock was reset and that disables the history collection flag on the HM to avoid corrupting and losing the history prior to the outage.

-Bill
 
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Rahul P Sharma

Thanks Bill... I could locate the Enable Target... It was disabled earlier... Hope this will sort the problem... Thanks again...

au revoir
Rahul
 
Rahul,

If you has to restart the HM, check to make sure History Collection is turned on in the System Status display of the History Module.

John Beck
Control System Specialist, Retired
 
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