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RJSolo, I need to noodle this for a while. I would also be very curious to know: 1) What frame size machine(s) are you working on? 2) Which DLN combustion system do the unit(s) have (DLN-I; DLN2.6; or?)? The gas <i>control</i> valves--are they the right-angle Woodward gas control...

STLTLS, Thank you for the information. >"Please tell us if the grid frequency is as unstable as the >data you have provided previously suggests 99.7%-100.3%)?" >Reply: Grid Freq is stable what we understood from the HMI >and GCP panel Digital Frequency meter. Frequency and...

moussab, If you're talking about the HP shaft, the heaviest--and longest--part of the shaft is the axial compressor. It does get hot, and the metal gets into its elastic range due to the heat. The axial compressor through-bolts (that hold the discs together) will stretch if left in one...

metro, This is a VERY frequently asked question on control.com. Try this thread, and the one mentioned in the response: https://control.com/thread/1547968823 I'm not familiar with the mnemonic FFD. Can you explain it, please?

> was this an existing problem...or just discovered baseD on new off take requirements? Good question. From the actual nameplate of the GTs (on the inlet plenum wall on the right side of Turbine compartment) what are the ratings for the two fuels? How long since the last off-line...

STLTLS, I hope to return home on Tuesday, and I will be able to download the files and analyze them then. Please tell us if the grid frequency is as unstable as the data you have provided previously suggests 99.7%-100.3%)? Are your units synchronized to a "large" national or regional...

How old is the torque converter? When was the last time the torque converter was refurbished? Some torque converters have a strainer in the suction; if yours has one, has it been checked and cleaned recently? Some starting means systems have a "spoiler" solenoid to "control" (limit)...

zachary747, I've seen this a few times, and the best way to measure the DC voltage split is to use a voltmeter and measure it at the input terminals to the <PD> Power Distribution core--with respect to ground (earth). If the voltages with respect to ground are, indeed, fluctuating as they are...

RJSolo, EXCELLENT sleuthing!!! MORE importantly--<b>Thanks for the feedback!!!</b> AS for the difference in stroke (travel)--between what the Control Specification (I presume) lists as the valve stroke and what you are actually seeing, many times the valves actually supplied by the...

STLTLS, The best way to share files is to post them to a web-sharing or hosting site (some people have used tinypic.com; others have used dropbox.com; and still others have used onedrive.com; and I think others have Google Drive), and then copy and paste the link to the location to a reply to...

gustavo_marcelo, >Why do we select the lowest? We don't select the lowest (of multiple inputs to be the output). The MIN VALUE, or MINIMUM SELECT, block selects the lowest of multiple inputs to be the output. And that's a philosophical choice--a control philosophy. For example, the...

gustavo_marcelo, What do you mean by coordinating overspeed and over-frequency? What would coordinating overspeed and over-frequency produce, or how would it be beneficial? Do you know what the typical over-frequency setpoint is for generators in your region of the world?

Actually, in GE Frame 9E with a mechanical overspeed protection device, it's called a "bolt"--which is a piece of metal held in a shaft (usually in the Accessory Gear Box) with a spring. The bolt is slightly "out of balance" such that when the shaft speed gets high enough to overcome the spring...

I'm going to answer both questions in one response. To my knowledge, there are two types of Mark <b>VI</b> simulators: One that uses a VME rack and power supply and a UCVx card and requires an HMI with Toolbox and CIMPLICITY to function as a turbine control simulator. I will call this a...

Esoteric_Stone, >Can we change speed in ISO control mode? I believe if the operator clicks on RAISE- or LOWER SPEED/LOAD when operating in Isoch mode that will change TNRI--which will change the speed (and frequency) of all the machines synchronized to that grid. >If we decrease load on...

mrabby, What is an MFT, please? I also realize the English is probably not your primary language. I understand you are asking why the unit trips when [something happens], but I'm really struggling with what the [something happening] is. GTs will NOT perform well when the back-pressure...

Just to be clear, when one is clicking on RAISE- or LOWER VOLTAGE when the generator breaker is open and the unit IS NOT synchronized to a grid, the actual generator terminal voltage WILL change. The VAr (or MVAr) or Power Factor meters WILL NOT change, but the generator terminal voltage meter...

You're most likely going to have to create a "project" where you add the I/O cards (I/O Packs and I/O terminal boards) to the project. You could take an existing project and edit it to include the I/O terminal boards and I/O Packs you have. You're also going to need to have some type of...

gustavo_marcelo, <b> >(where the >operator has to manually adjust the excitation to maintain >the desired V Ar (MVAr) or Power Factor setpoint)"</b> It's "manual" VAr or Power Factor Control.

Esoteric_Stone, >We found the enumerated variable status_fld in ToolboxST (in >software tab under variables. We used the search feature). >We first tried to find the .cim >configuration file. Lot of them were found in the screens >folder but enumertions detail was not there in .cim in...