You likely found this site using an Internet search engine (like Google or Bing or Yahoo or whatever they use in your part of the world).
control.com has a 'Search' feature as well, though the search entry field is hard to find in a bar at the upper right corner of the page.
When one uses a search function--any search function--it's common (or should be common) to use several slightly different words and combinations of words and even word spellings in a succession of searches when looking for information. That's because not everyone uses the exact phrasing or spelling of words as you; it's just human nature. So when using a search engine or function, recognize human nature and try several slightly different words, terms, and even spellings in several searches when looking for something. You'll probably be surprised at how much more information you will find.
Use the 'Search' feature of control.com. (It will likely take a try or two.) And use several different spellings and combinations in multiple searches. For example, try "+base +load" (without the quotes), or "+part +load" (also without the quotes). You will find some relevant search results, and some irrelevant search results, and some informative search results and some not so informative search results.
One of the benefits of a forum like this is that when a question is asked and answered, and hopefully some feedback is provided by the originator about the usefulness of the information or assistance provided, that many, Many, MANY other people can search past threads ("the archives") and find answers, along with feedback about whether the information was helpful or not. That way, the same questions (like the ones in your first line) can be answered once and read many times by others. And very importantly, everyone gets the same information.
So, learn to use the 'Search' function of control.com; it's very fast and helpful (once you find it and learn how to use it; some big hints were given above).
Shutdown control is just what it implies. When a normal shutdown (STOP) is initiated, the Speedtronic will reduce fuel until the breaker opens, then continues to reduce fuel to decelerate the machine. I believe the message field indication of 'Shutdown Control' will be displayed after breaker opening as the unit is decelerating. but some machines may display it while unloading the unit when the breaker is still closed.
As for your second ... line, when troubleshooting any problem, the first question which should be asked and answered is:
A) What changed immediately before this condition became apparent?
B) When did this problem start? After a maintenance outage when LVDT feedback was calibrated? After some troubleshooting when some values were modified?
C) What have you done to try to troubleshoot and resolve the problem?
These are extremely important questions, and necessary for any kind of response.
The <b>other</b> questions which must be answered are:
1) When you say FSR goes to 100%, does the Gas Control Valve also go to 100%? If it does, is it the LVDT feedback that's indicating 100%? Is the GCV actually going to the maximum mechanical position?
2) Is the unit going on Base Load, exhaust temperature control when Base Load is selected by the operator, or is it not reaching exhaust temperature control and mot making as much power as before the problem started?
3) Please tell us the values of the following Control Constants--<b>the "live" values running in the Mark V from the Control Constants Display, *NOT* the values from the Control Specification or some other written document or even the Control Constant file on the operator interface:</b>
FSKRN1
FSKRN2
DWKDG
DWKTC
Again, we need to know what the live, running values of the Control Constants are, not the values in the Control Specification or some other written document or file.
4) Please look in the CSP for your unit and tell us which version of the Speed Control FSR is being used in your machine: FSRNV1, FSRNV2, or FSRNV3 or ? This is as important as getting the running Control Constant values for the Question 3 above. You can use any text editor's search feature (File - Edit - Find) to look for FSRNV and there should only be one occurrence and it should either be FSRNV1, FSRNV2, or FSRNV3.
We await your complete response to all of the questions above in order to be able to make a considered response.