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Dear Max, thanks for the feedback. I will look forward to more information from you as you dig deeper into the problem. As you mentioned, this is an important alarm if the unit is unable to trip the breaker or itself when needed. Good luck!

Dear Wahidul, It is difficult to assist you since I cannot view the your logic exactly as it is running, so my suggestions are based on assumptions of your logic. The MKIV elementary drawings I am reviewing are "typical" for GE design heavy turbines, but may differ from your exact logic...

Dear Wahidul, After reading CSA's post I reviewed my MKIV elementaries and I think the last signal you are looking at is L3GIVFLT, not L3IGVFLT. I apologize for not catching this earlier, I just did a copy/paste of your post for the alarms without fully reviewing my prints. If I understand...

Dear Wahidul, this is a very interesting problem you are encountering. I have reviewed some old MKIV prints I have and am able to "see" the logic you speak of pertaining to the alarm L3GFLT. This alarm should be annunciated if the MKIV identifies a problem with the gas control valve, gas...

Dear Sandy, Mohamad did a very nice job of presenting some factors for calculating equivalent hours of operation. But I don't know what type of machine these numbers are referring to and I don't think you can generalize or assume that these are a applicable to a specific unit. Each...

Dear Madmax, it would be most helpful, and allow us to help you best, if you can provide as much information as possible about your unit. This information would include: Type of machine (Frame 7 EA, FA etc) Control system (MKVI in this case I think) When the alarm happens, what you have...

Dear Kamel, I agree it sounds very similar to a 7FA(I think the 9FA is a little bigger) as far as #2 bearing area and exhaust diffuser. If the bearing manhole cover is indeed "Missing" I would definitely say that: Bearing instrumentation is going to be effected CO2 fire protection is...

Dear kamel, a picture would be worth a thousand words in this case. I am not familiar with the 9FA, but I believe it is very close to the 7FA. On the 7FA there is piping that supplies cooling air from the #2 bearing cooling fans. Another pipe vents the cooling air outside of the...

Tom, I do not think there is a black and white answer to your question. This topic has been discussed here and on many other sites before. I will put it simply, since that's all I know. Is crank(force) cooling good for a unit-NO. Do a lot of sites do it-YES. Why would someone do...

Dear Lee YJ, first off it would be helpful if you provide more information as the the turbine or system being controlled by the MKVI. That being said here are my comments. The MKVI TMR unit for controlling most turbines is designed and touted as being able to lose one controller core...

Dear Lekie, I would suggest using your toolbox software to look at diagnostics for "T" core on the VCMI card and the UCVE cards in particular. I appears that something has stalled the "T" core from booting properly. Take note of the LED indicators on each of the cards in the "T" core and...

Dear Voyager2, sorry but I have been busy with other tasks. I am not sure which configuration your site is using, either DLAN or DLAN+. I would check EE. 619 LANDRP.0 on both units and see if these have the same drop number. This is for RS422 or isolated LAN units. If you are using DLAN+...

Dear attali abdelkrim, as CSA asked "When did this problem start?". You anwered after changes to the .hmb file and also changes to the network. From the snip of cimmod log you provided it looks like you are using the TCI cimmod protocol. Signed 16 bit integers, non-native format,using...

Dear Voyager2, I do not know the EE's to check right off hand, I will do some looking at files and documents and respond as soon as I can.

Voyager2, yes I would say that it is possible that if you downloaded the file from another EX2K then the node addresses could be same for both machines, which could cause the fault 417. I have never tried doing this, creating two devices with the same address, but it seems like this would...

Dear islaahi78, thank you for the feedback and I am glad that your issue has been resolved.

First of all to CSA, thank you for the MVP Kudos, I'll try not to let it go to my head. To Sean, I am going to restate some of the comments from CSA, for your benefit and mine, and to have CSA sanity check my thoughts and understandings. You say in your post: "The original issue is: 1)...

Dear Voyager, I am not really sure how this fault is related to your recent download, but anything is possible. Fault 417 indicates a problem with the Arcnet link from the EX2000 and the other nodes, so I'm not really sure how an EE could be responsible for this error. Are you sure...

My only suggestion would be to check the adjustment of the proximity switch for the SSS clutch, if that is what is being used at your site. Possibly it is on the edge of being able to sense the position of the SSS, and dropping out for some reason as the unit accelerates? I would also have...

Sean, I am going to chime in a bit, but most likely not answer all your questions, but at least try to help. I notice a lot of time TNR went up to 106 during baseload, does it means that my droop is 6%? No the max amount of the TNR is usually around 107%, check your control constant of...