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Bob Johnston, I just traded emails with a former colleague who still works at GE and he told me that GE Controls Connect isn't well publicized in GE, that many field service people don't know about it or even use it. He also told me that there appears to be several different levels of access...

Have you used the DCOM document that Wassim Daoud provided the URL for? It most likely could be very helpful!

When you are connected to a grid in parallel with other generators and their prime movers, the Mark VI should be in Droop Speed Control Mode. So, you would need to switch VERY QUICKLY from Isochronous to Droop when you closed the tie-line breaker to prevent severe load swings after...

G.Rajesh, My virus protection software is preventing me from downloading the file. I'm going to presume there is a Process Alarm that indicates there is a disagreement between the primary speed pick-up for <S> and the overspeed speed pick-up feedback for <S> based on the first alarm in your...

John Emery, It's great that GE is providing this free service to Customers; thanks for continuing to bring it to our attention. However, I believe that the community here at control.com provides as much or more value to the GE-design heavy duty gas turbine controls community because of the...

Hal Armour, I believe there are details of the TTSA card in the Mark VI (not the Mark VIe) System Guide, GEH-6421, Vol. II. It wasn't in early revisions of the manual, but did appear in later revisions. Consistently inconsistent, as a former colleague used to say....

Phil Corso, Radial runout is not a readily available measurement on GE-design heavy gas turbines. Trying to give vibration balancing and/or alignment instructions with no more information than was given is virtually impossible. We don't even know what the vibration maximums are. There...

Ayman, Passive speed pick-ups and passive speed pick-up inputs are not very good at determining zero speed. In GE-design heavy duty gas turbines just as "synchronous speed" does not mean <b>SYNCHRONOUS SPEED</b>, zero speed does not mean <b>ZERO SPEED</b>. Change the overspeed zero speed...

I'm no communications protocol expert, but I believe OPC makes use of DCOM on MS-Windows machines. My point is that the problem is not likely Toolbox, the .m6b file, or the Mark VI. Try to think of the Speedtronic panel as separate from the HMI. GE HMIs can be used to communicate with Mark...

> also Woodward is used for most Ge turbines. GE uses Woodward gas valves for new units, particularly those with DLN combustion systems. Prior to that, they almost exclusively used Young & Franklin gas valves.

Bob Johnston, What's that, you say? No documentation from GE?

>Contact GSE Do you have a web address (URL) for this company, or a phone number, or the complete name of the company? Thanks!

Does the HMI at your site use MODBUS or GSM to communicate with a DCS or other control system? The problem is likely not related to the .m6b file or Toolbox, but ... I have seen intermittent odd MS-Windows errors caused by keeping Toolbox continuously running. Usually when this occurs, it...

Well, then you haven't provided the entire alarm text message, including the drop number. Some later GE Mark V HMIs require a secret decoder ring to decipher which processors Diagnostic Alarms are associated with. (Isn't this fun?) There's one possible way to determine which processor--by...

Umar, Do you have the TIL number, please?

So, you're saying that thermocouples are never grounded in the field, on "dirty" earth, and that transmitters and the interconnecting cable shield drain wires are never connected to dirty earth in the field? I don't know as I've ever measured a T/C to ground, but I do know that Speedtronic...

I'm seeing these water mist fire extinguishing systems used for turbine equipment enclosures, but haven't seen them used for control rooms with lots of electronics. The idea is that by using fine nozzles to turn the water into a mist the heat of a fire will cause the water to vaporize (turn...

COBOL, huh? Haven't heard much about that for a while (at least not in my business--which is power generation). Most of the people I have worked with in this field are pretty much self-taught, having gotten most of their "education" and "training" from working in the industry. I think more...

Thank you for the confirmation of the method of damage. If there was dribbling in the combustor due to carbonization of liquid fuel in the nozzle it probably manifested itself as a cold spot spread and could have been pinpointed using the manual selector valve/pressure gauge at the Liquid...

Hassan, One of the "features" of the Mark IV was that it was not very adaptable. While it's easy to assign a new discrete input to an unused contact input point or create a new relay output using an unused point, "adding" new analog inputs and scaling them in the field was virtually...