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Hi, control.com has a 'Search' feature in the upper right corner of just about every page. Droop Speed Control in GE Speedtronic heavy duty gas turbine control systems has been covered extensively in many threads over the years on control.com. The most recent thread is...

Great response, M M Ahsan. Just to clarify, "back power" is usually called reverse power. And reverse power is usually referring to watts ("real" power). Reverse power (watts) can be very damaging to a prime mover. The originator seems to be referring to reactive power (VArs) not real...

The partial list of actions (beginning at Step 9) is incomplete, and we don't know the context or the origin of the document. For the best operation of a TMR control system all three processors need to be using the same code with signal names assigned to the same memory locations to avoid...

I want to caution people about the practice of building and validating a good project (applicaton code) before downloading when working with a TMR Mark VI Speedtronic turbine control panel. Toolbox dynamically maps memory addresses, and each time a project is built Toolbox can reassign signal...

Yes, that is unfortunate. Actually GE used the angle brackets to denote hardware as opposed to software when the first starting producing microprocessor-based controls. They continue that today. And that was long before email and HTML. It's likely they wish they hadn't done that now, but back...

Are you trying to open the .m6b file from an HMI other than the master HMI? It would be really helpful to know what error messages or dialog boxes are appearing when you try to map to the location and what the configuration of your network is (how many HMIs; which HMI you're working from; if...

If RSVIEW32 has OPC capability, it can be done, but it would have to be done through an OPC server on some computer. Some versions of CIMPLICITY on GE power generation HMIs have OPC capability. I believe a couple of the major OPC vendors (Matrikon and Kepware?) have done something similar and I...

In typical GE fashion, an "HMI" is not always an HMI. Mark V turbine control systems were originally supplied with an operator interface called the <I>, which was an IBM-compatible PC running on a proprietary, command line-based, multi-taksing operating system called IDOS. This can loosely...

This is a GREAT question for the gearbox manufacturer! They would likely be in the best position to have seen this kind of problem before, on this or other applications. Electrons are funny things. Undesirable flows can be induced in some very unlikely situations. I've seen one problem caused...

It's a good idea when you have a new question, even though it's related to an existing thread, to start a new thread so as to avoid confusion. VH14 was designed and built before electronics were around that could withstand the high temperatures and vibration which exist in the Accessory...

Yes. But, have you had an alignment specialist/vibration specialist analyze the problem and make a recommendation?

You probably have a machine which uses Constant Settable Droop Speed Control. Please be patient while that's being worked on. In the meantime, what does your Control Specification, Sect. 03, Speed Control, say about Constant Settable Droop Speed Control? In the meantime, can you please...

eurydice, Hopefully more people are reading this than just you, which is why there was so much detail and so many caveats. As I've said, I've lived to regret every time I've explained Speedtronic droop speed control, and probably the only difference this time will be I won't be on the...

So, to try to tie all of this together, let's summarize. (WARNING: Maths used extensively in the explanation below.) And then let's clarify. And, I'm likely going to regret this. Probably in more ways than one. >>In GE-design heavy duty gas turbine control systems operating on typical fuels...

There is a(nother) mistake in the reply I originally posted (the moderator(s) graciously corrected the first mistake). The following sentence: >The amount of load that a Speedtronic >heavy duty gas turbine control panel >will accept for a given error in the >difference between TNR and...

This is good information. Thanks!

The values FSKRN1 and FSKRN2 are Control Constants, meaning they are adjustable, but "fixed" parameters. (USUALLY, a 'K' in the third position of a signal name signifies the signal is a Control Constant in Speedtronic heavy duty gas turbine control panels.) The values don't change during...

Can you tell us some of the issues and how you resolved them?

Are you asking for the typical engineering units used for frequency and RPM? Frequency is usually expressed in Hz. And RPM is an engineering unit expression for speed. You could scale your frequency input from that transducer, if the DCS wants it in percent, as 90% - 110% (45 Hz to 55 Hz)...

Congratulations on your 50 Hz, four-pole, 20 MW turbo-alternator. Have you asked this question of the commissioning team? Have you looked at the code running in the DCS to see how the scaling which was chosen by the commissioning team affects other functions, if at all? It may be that it...