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The stainless steel braided coaxial cables used to interconnect the VCMI cards and the VPRO cards are the IONET cables. If there are problems with the cables or the BNC connected on the cables (including the BNC termination resistors) or the BNC connectors on the cards (VCMI and/or VPRO) these...

Yoganak, You need to find the P&ID for the generator that shows the devices and valves in question and it will become readily apparent what position they should be in. GE likes to use a “block and bleed” system on these devices so they can be easily tested. My guess is one of the two round...

ousamma sel, When did this problem start? After a maintenance outage? Is the Mark* a TMR or SIMPLEX panel? What does the SRV actually do when commanded to open? Does it open to, say, 5%, or to 50%, or to 100%? Or does it not open at all? What is the gas fuel supply pressure to the SRV before...

ME42, GE's Customer support issues are actually two-fold. First, the field service personnel are not trained in turbine operation, so it's difficult for them to determine if the control system (any version of Mark*) is working correctly or not. This extends to the field devices--they are not...

ME42, I am having some real issues with this and a related post by this poster. He says he is using MS-WindowsXP as the OS.... This is raising flags for me. I imagine he has used ToolboxST to confirm that data is being transmitted to the HMI--but that doesn't necessarily mean that it's on the...

utility.cpp, Do you have all the necessary dongle(s) for the new HMIs you are setting up? (I know some of the newer GE Mark HMIs have an "integrated" dongle for both WorkstationST and ToolboxST AND CIMPLICITY (or PROFICY MACHINE EDITION or whatever it's being called these days....) I also...

Abubakar_Rashid_96, I wish to point out one more thing about wheelspaces--not wheelspace T/Cs, wheelspaces. The turbine wheel rotates at several thousand RPM. The axial wheelspace area is just a few centimeters, at best, on each side of the turbine wheel. That means the air in the wheelspace...

Abubakar_Rashid_96, glenmorangie is more than likely correct. Improper re-insertion of the wheelspace T/Cs OFTEN causes these kinds of strange readings. The next time the machine is open and the turbine shell is removed and the turbine rotor is removed, have a look at the guide tubes for the...

Then you take is as it was intended. Blessed day!

Good luck! In years past I always had excellent luck dealing with Buffalo Fan/Blower; they did a LOT of business with GE and were keen to help with any issues or needs or questions. I don't know what the situation is currently; so many of the turbine enclosures have changed dramatically in the...

Who said anything about changing the slow-roll speed??? (Slow-roll is a term that was used to describe using Aux. L.O. Pump discharge pressure/flow through a second torque converter solenoid/passage, 20TU-2, to keep the shaft spinning at about 30-50 RPM; it wasn't a turning gear, it was using a...

I don't know who GE Belfort is using these days, but GE used a couple of different companies over the years. One, also in upstate NY was Buffalo Fan or Buffalo Blower (I saw both nameplates over the many years); I think they're still in business. I just searched the World Wide Web, and it...

Curious_One, I worked with a man many years ago who had a VERY difficult time turning over operation to the operators at a plant. (I actually did more than one commissioning with him.) He just had no confidence that they knew how to operate the unit--and we all know that's the case at most new...

Curious_One, Thank you for the information! It is MUCH appreciated!!! So, you're saying the DC turning gear motor is normally for the express purpose of assisting the AC high-horsepower starting motor and torque converter with breaking the turbine-generator shaft away from zero speed. So, the...

How about helping out here, ControlsGuy25? You've all the GE Belfort experience and contacts.

Looks like we won't hear back from the original poster.... I still fail to understand how a unit could get to Base Load with one or more compressor bleed valves open. If that were to happen, Base Load would be less than usual--because a portion of the axial compressor flow/pressure was being...

CAN IT, OR CAN'T IT, BE STARTED FROM ZERO SPEED? THAT IS THE QUESTION WHICH ANSWERS THE ORIGINAL POSTER'S (UNASKED BUT CRITICAL) QUESTION. Yes or no. It can or it can't. If it can't, then can it only be started at 6 RPM when the AC turning gear motor is running? And, if it can't be started from...

Curious_One, Ehhhh, ..., Uhhhh, ...., The question was--yet again--from a person who believes that EVERY GE-design Frame 9E 9E heavy duty gas turbine is like EVERY OTHER GE-design Frame 9E heavy duty gas turbine. Yes; they all suck and squeeze and burn and blow--but the auxiliaries can be VERY...

glenmorangie, One of my main questions is: Can the unit be started from zero speed without being on turning gear (COOLDOWN)? Or, does it have to be on turning gear (presumably AC turning gear, because he says the RPM on AC turning gear is approximately 6 RPM)? I know that when GE changed to...

Mark, Unless there are CTs (Current Transformers) connected to the existing PTBA card (the I/O terminal board on the <P> core), OR there are terminals for CTs on either the existing PTBA or the new PTBA (it's an extra set of regular screw terminals--in addition to the small, high-density...