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Y’all are speculating because we don’t know what happened BEFORE the timers and counters were found to be wrong. It’s probably likely that someone downloaded ALL to the Mark V. But we don’t know that. This is just another person who thinks that the issue they are experiencing is simple to fix...

Syed Ahmed, Please refer to your Oxfords English Dictionary for the definition of ‘doubt.’ In my opinion, it’s a very ugly word. Why would gas turbine performance be an issue when grid frequency is not normal? Gas turbines are mass flow machines. That means the more mass (of air and fuel)...

nikidi.control, So, we don't know how important emissions are at the Company/plant where you work. We don't know if the emissions monitoring equipment is maintained properly and calibrated regularly. We don't know why you are being trained in DLN tuning. It would help to know. The main causes...

nikidi.control, So, the other main concept behind DLN-I low NOx emissions combustion systems is that the majority of the air entering the combustion liner does so through the primary combustion zone. The reason for that is that when the unit is operating in Premix Steady State the majority of...

Really? Seriously? Does this information (about speed pick-ups and vibration sensors) belong in a thread about DLN books/articles? If anything, shouldn’t it be in the other thread by the original poster?

nikidi.control, Is your company primarily training you to tune DLN-I combustor-equipped gas turbines? And, if so, are they explaining why and how DLN-I combustion systems work—or are they just giving you a procedure for tuning they want you to use (to avoid using a company or contractor to...

nikidi.control, This topic has been covered before on Control.com. Previous threads can be found and reviewed using the 'Search' feature at the top of every Control.com webpage. There are multiple types of DLN, and while the process of tuning is basically the same, the actual procedures for...

Abdul majid bakti, DENET and IONET are two different network systems in the Mark V. DENET (which stands for 'Data Exchange NETwork) is how <R>, <S>, <T> & <C> (and <D>, if so equipped) all exchange data and information, commands etc. IONET (which stands for I/O NETwork) is how each core (<R>...

Abdul majid bakti, Well, ..., thanks for the feedback. I think. I don't actually completely understand what you wrote, but it seems the problem was something to do with the IONET cable (a two-wire, untwisted pair) running from the TCQC in <S> to the TCTG in Loc. 3 of <P>, and then to the TCDA...

marislevan, Yes; Droop Speed Control is a straight line, of the equation form y=mx+b (at least that's the form I learnt in grade school, where "m" is the gain and "b" is the offset. "y" is the total amount of energy flow that's required to make a certain amount of power (electrical power). The...

Absi absi, Is this ”summary trip” associated with the 16-relay output card (or 16-output relay card)? Is it some kind of "diagnostic" the HSDE DIGICON runs and alarms when there's a problem? When you say the unit trips--exactly what is happening? Does the fuel stop valve just close but the...

absi absi, Another thing you haven’t told us is what fuel the unit is burning.?.?.? When did this problem start? After a maintenance outage? After a trip from load? Is it possible there is some kind of ground in the system in some circuit connected to the 16-way output relay? Perhaps the fuel...

absi absi, ControlsGuy25 is correct; we must have more information. The starting sequence for most GE-design heavy duty gas turbines is pretty similar: purge; fire; warm-up; accelerate; load. Also, we don't know if the machine at your site is a generator drive or a mechanical (compressor?)...

mahad83, I have only ever applied for one job as a operator/technician for a plant with Mark* controls. And my 20-years of experience with the OEM was pretty sufficient for the hiring company, though I was pelted with a lot of questions about my experiences and travels, but not so much about my...

It's important to understand that replacing a TCEA card is a very precise task--in that there are hardware ("Berg") jumpers on the TCEA cards that have to be in precise positions for each of the three TCEA cards (in Locations 1,-2 & -3). It is recommended this be done when the turbine IS NOT...

!!!BIG MISTAKE!!! <S> communicates with the TCEA card in Loc. 3–NOT Loc. 1. Very sorry for any confusion!!!

jackson, You are most likely correct with your presumption that somehow the turbine control system believed one or more of the tie breakers was opened which is what caused the turbine control to switch to Isoch from Droop. Running in Droop under the conditions you cited (TNH at 100.3%--which is...

Based on the information provided by the original poster, it would appear that <S> is unable to communicate with its associated TCEA card in Loc. 1 of <P> core, usually identified as <Y>. <S> uses its IONET cable to communicate with its TCEA card AND its TCDA card in <QD1> (and <QD2> if so...

ControlsGuy25, "... sometimes during starting the gt we face a problem on antisurge . Anti surge goes to saftey protection and hp rotor speed stays on 4700 and does not accelerate to reach 5100 rpm , ... " This from the first paragraph of the original post. I agree--for someone without much...

All, Looks like some student (Atharva123) is trying to get anyone to do his homework/project for him…. Bad student. F grade. Failed integrity requirement, also. Anyone want to hire this person??? I didn’t think so. He could try out for an appearance on “The Apprentice,” Oh, wait—the star...