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Hi Thanks for your reply @Abby ! All the best for your new position! James

Hello all, Could we know some of this followings points to be able to support : 1Type frame of Gensest ( OEM equipments name/reference) 2 Utility/Facility CONFIGURATION What you are describing in your post, is something like "load shedding" model controls system to be implemented ... They...

Abby, Thank you for your reply. Well I thinks that such situation can be avoided in the future.. What you need to do, is getting trends from ST controls systems for reviewing , and Investigate on why PLC for Bypass diverter damper did not what they were supposed to do in such situation... Do...

Hi Thanks for sharing ! Hope all is working well ! :) ;)James

David Meng, Can you share here what you did on that issue... I am pretty sure that the manual helped... James

https://www.power-eng.com/coal/gas-turbine-combined-cycle-fast-start-the-physics-behind-the-con/#gref

Hi all, Abby, Here some notes which can answer to your questions 1.According to start up curves ( Conventionnal or fast start ) , the GT load is holded for ST temp matching ... Thats what i remenber ... 2.Also there should be more precisions on that GT /ST load Controls philosophy on the...

Hello All, Abby thank you for posting these elements here as promised before! Much appreciated ! We can learn all toghether from this case ! So is the RCA related to Damper limit switch, feed back signal lost during such event and so PLC get no powered ? How about UPS or watch dog or any...

Hi Please have a read on the attached pdf file it is very important for getting a good understanding on DC brush control command systems and dead zone reduction methods: Do not hesitate to share your feedback! Regards, James

Tricon Module Status Dialog Box For each module in a Tricon controller (including the power supplies and Main Processor modules), the Module Status dialog box displays information about faults. To open the Module Status dialog box, double-click on any module in the Module Status window. Tab s...

Creating and Managing Users 11 Triconex Enhanced Diagnostic Monitor v1.0 User’s Guide Note Even if you are not changing the password, you must enter a password in the Password and Verify Password fields to confirm the other changes to the user’s information. You should enter the user’s...

Clearing Faults on All Modules This procedure explains how to clear the faults on all modules in a controller. Before clearing faults, you should identify the causes of the faults and correct them. You must have read/write access to the controller to clear faults. If you are connected in read-...

32 Chapter 2 Monitoring Controller Hardware Triconex Enhanced Diagnostic Monitor v1.0 User’s Guide Locating and Correcting External Faults This procedure explains how to locate and correct external faults on a module. Before you begin, the diagnostic PC must be connected to the network, and...

Here is some notes from OEM manuals: Understanding External Faults 31 Triconex Enhanced Diagnostic Monitor v1.0 User’s Guide Understanding External Faults An external fault is a problem with field inputs, field power supplies, terminations, wiring, or connected devices. Modules report...

Are you using Trisation ? What kind of interface bus is that tribus somethinh called like that Profibus/NET...

I have a read on the manuals and it looks like you can troubleshoot it easily... Thank you for posting schematic so we can add some notes/tips/comments Also do you see "load/fuse indicator " ...is there no light or yellow steady ... James

Did you perform a good read on "field terminations guide" manual for Triconex .... As there is most of what you need to kn ow on how AO card 3805H is connected /wired /configured with HART module interface ... Thanks for sharing if so ... Can we have a schematic on the Field wiring ..AO card...

Okay i was just also saying that your AVR may be not tuned properly to get that swings damped or at least avoid such event ... Did you get a system/grid stability studies done ? during design /engineering of the Plant.. We may need to get some trends on that event so we can offer better help...

Okay. Are you saying that the Facility is connected to a infinite grid ... No swings in the grid... doesnt means that your AVR and associated equipment is well tuned ... James

Here one post describing a case close/similar to yours at site... https://control.com/forums/threads/triconex-esd-do-output-card.32712/ Have a good read! Do you have a read on Triconex planing and installation guide... It can be kind of triac protection or Hart module interface problem... YOU...