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Thus data looks good. Note: 1. CDPDMD and CDPSSEl are within 2% stroke of each other. 2. CDPA and CDPB are very close and consistent. 3. The demanded mA (CDPMA) is close to the null current of -20. Given only this data I would believe that the cdp loop is working correctly. However we...

You are getting the null shift alarm because the actual CDP position (CDPSEL = 13%) is not able to reach the demanded position (CDPDMD = 4%). When the actual position matches the demanded position the demanded current should be close the expected null current. When the actual position differs...

Hitting the T48 regulator at 26 MW is a low power level for an LM6000PC engine unless the ambient temperature is quite high (> 100 deg F). The LM6000PC is rated as a 44 MW machine. I would be tempted to ensure that there were not additional items not already mentioned there were preventing the...

Typically, there is a button on an HMI screen to turn on and off SPRINT. So that is where I would look first. If that does not exist and you want to force something then force Z_SPRINTON to false.

I agree that doing an 8MW load accept beginning at 15MW will result in less speed variation than doing an 8MW load accept starting from 0MW. However, the top end can also be a problem if not connected to a grid and running in isoch mode, where100% power is defined as hitting a limiting...

This is what I see: There are a number of faults that occur over a number of days but the day of interest appears to be January 29th. It appears that the cause of the shutdown was due to the Generator safeset failure reported by the Sequencer code which occurred at 20:14:05.276 on Jan 29. The...

This is what I found with an internet search: MS6001B - ETN

I have a few comments. First, you mention a blowoff valve. A PF1 does not typically have a blowoff valve but they typically have ST8 and CDP bleed valves. Does this engine have a dedicated blowoff valve or are you referring to either the ST8 or CDP valve? Second, where exactly did they see...

Expounding upon Dave's response, here is a step-by-step procedure: Step 1. Replace s by jw into the H(s) transfer function. H(jw) = [1000jw/(1+10jw)] Step 2. Mulitply H(jw) by a factor that will eliminate the imaginary number j from the denominator without changing the magnitude of the...

Sorry can't help you on the semi-annual inspections. That's not something I do as part of my job.

OK. It's a SAC with two gas metering valves. It will have IGVs, VBVs, and VSVs. It shouldn't have ST8 or CDP bleed valves since those are (typically) only used on DLE engines. The PG and PH are "sister" engines in that the major differences are in the fuel system, the combustor, and the two...

I'm curious. There are many different flavors of LM6000. Which type are you working on? PA,PB,PC,PD,PF,PF1,PF2,PG, or PH? I would think that the PA and PB are unlikely since they are old engines and out of production. I would also doubt that you're working on a PH since not many of those...

I always assumed (and you know what CSA would say about assuming something) that CSA was short for Customer Service Agent. I have no idea if my assumption is correct.

From a computer science point of view a constant is a parameter which does not change. However, when I first started working with gas turbine controls many years ago, it was immediately obvious that while some "control constants" were constants from a computer science programming point of view...

Metals are defined by their characteristics (high electrical conductivity, high thermal conductivity, high luster, maleability, etc). Pure substances that have these characteristics (copper, gold, silver, aluminum, tin, lead) are metals. However, non-pure substances that have these...

The reason is related to their heritage from flight engines. Flight engines use absolute measurements because of the great range of altitudes at which they operate. When the flight engines were derived for marine and industrial use, GE kept using absolute measurements because that is what they...

Yup. Basically the same engine turbomachinery except for the combustor. The combustor difference drives a significant difference in the fuel system. A standard gas only G4 SAC engine will have 1 metering valve. A standard gas only G4 DLE will have 5 metering valves. All the added complexity...

Yes. The result would be 3.

I cannot say for certain because this is but a code fragment and you do not specify the language but I will make some assumptions and do my best. The constant expression 16#FFFFFFF0 is a 32 bit constant given in hexadecimal format. The "16#" indicates it is hexadecimal. In hex, an "F"...