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Bill, I too am curious if someone like CSA or Otised could explain better the reason why most GE Frame gas turbines can't be restarted once they fall below operating speed. We operate a Frame 7 similar to yours it sounds like. My understanding as yours was that the turbine was...

Jack, it is my thought that these switches are installed to measure inlet differential pressure that would be caused by dirty air filters or some other kind of inlet obstruction. First switch is an alarm, 2nd starts a normal shutdown. Our Frame 7EA has 96CS transmitters to measure inlet DP...

I offer this information as what I know from the MKVI. I think that the MKV is mostly the same. F and G drives are "created" by the TCI (Turbine Control Interface" service when it starts. F: drive is a mirror of your "site" folder, G: contains files for the TCI service. TCI is the service...

You need to look at how this machine has been running in the past. What were vibration levels running at before? Typical vibration limits are at .5 in/sec for alarm, trip is usually at 1in/sec. If this is something that just started was there a hard trip or some violent event that preceded this...

> Could someone please tell me the differences between Mark VI and Mark VIe? < The MKVI is a VME (Versa Modular Euro)large form factor type control system. It has proven to be a robust and reliable control system as a continuation from the early speedtronic control systems. It's main...

Dear Colladjl, as you are well aware the more information you provide, the better information this forum can provide. Rated power for a gas turbine is typically stated at "ISO conditions", for most Frame 5 units base load is usually around 25MW depending on ambient temperatures mostly. The...

Dear Genprospec, it sounds as if your trip oil pressure is indeed low, have you verified it at the local gauge panel while running? With a tight system the trip pressure at the gas skid gauge should be around 50 -60 psi. When you say you have replaced "trip oil dump valves" would those be...

Nimeshe, most generators are set-up to trip on underfrequency for generator protection. Since underfrequency/underspeed conditions cause higher generator stator and rotor temperatures it is necessary to trip the generation source if system frequency degrades below a certain setpoint to...

Minister, the great thing about GE's control systems are that they have lots of great tools to use for diagnosing problems. The downside is that all the same tools are not given to all the customers (some .m6b have pins, some don't etc.) I am not sure where the ball gets dropped, either...

Dear GA, I have not had the pleasure to read any posts from you previously, I look forward to more comments from another GE user in the trenches. To poke a little fun should your statement not have read " We heavily support GE"? We too commonly use the statment "You may find better, but...

Lloyd, most 60hz systems will not run on 50hz frequency due to the fact they were not designed to run at the lower frequency. Some things will run for a while (some motors for instance) but due to the lower frequency they will draw more current than designed, typically get hot, hopefully just...

Toolbox is definately not compatible with vista at this time. Toolbox will operate on XP systems if you only plan to use it as an offline way to check logic or play with Cimplicity, but newer versions of TCI will not work on XP without a dongle. I am not sure what your intent is, or why you are...

Greg, we operate a 7ea in AGC mode 24/7. We also have seen short service life from the IGV actuator, Young-Franklin is now producing a "severe service" actuator for plants that load follow or otherwise see a lot of mw changes, hence lots of IGV actuation. A year or so ago I had a very...

Ann, we have an Emerson ovation system talking modbus RTU with serial links to an ABB AC410 system, a Nalco trasar unit, and several RS485 networks with SEL devices on them. I also talk to several SLC500 processors, but I use the Ovation TCP/IP driver for these. Not sure if I can help but...

Nanang, I think you are on the right track. You did not say what kind of machine you are referring to, so this may not be correct. I know that GE recommends offline wash temperatures where the wash water or solution is within 150 degf of machine temperature, usually wheelspace temp is...

Serg, I don't know how well I can explain this, but here goes. First try searching the web for controller "wind up", I got several good responses back from my query. Wind up typically refers to a controller trying to meet setpoint that has saturated due to the process variable being too far...

Mohsin, do yourself a favor and use the power of the internet, and also the power of the search engine on this site. Moog, one manufacturer of servo's, has some great information on servo operation available on their website. Searching moog or servo on this site will give some great reasults...