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IK43, I am not an electrical engineer so I am also confused. My teaching is that a "32" relay element is for directional power. Power is calculated based on current and voltage potential. I could understand if something was wired incorrect for the CT circuit such that the relays are sensing...

I am not sure if the OP knows what kind of can he just opened with his first post since joining, but it has been a good reason to get my fingers warmed up on the keyboard, and an excuse to get away from the ABB HMI upgrade I have been in the midst of. Also a good offshoot of the topic to...

Curious_One, I can't say with 100% certainty but..........to my understanding Emerson purchased only the GE Intelligent Platforms product line which included the GE Fanuc PLC line and the Proficy Machine Edition software. It did NOT include the GE MARK control system hardware, GE ControlST...

Frame5Guy, I can't directly answer your question as I have not seen a migration from GE controls to Honeywell. I have seen migrations from GE to Ovation, and GE to other PLC brands. My comments are somewhat jaded. I have seen the behind the scenes things that go on from a migration away from...

Bagi, I would agree with CSA that this is most likely an issue with the cooling and seal air system. I would suggest reviewing the P&ID specific to the system and verifying that all the orifices are installed in the proper locations. These were most likely removed when the turbine...

Thx for chiming in CSA, always great to have your knowledge and input.

Yoganak, sorry for the delay, our outage is keeping me busy. I can't directly answer your question as to why the 55% was chosen, it would be interesting if GE would provide details that answer these questions. I like you want to understand the logic, behind the logic. I want to ask the...

Yoganak, I may not be fully understanding your question this time, but I will give it a go. I understand with the older systems that used a mechanical overspeed bolt there was no way to test its function except to increase turbine rotor speed until the bolt actuated and released trip oil...

Yoganak, I operate and maintain 2 Frame 7EA machines and 2 Frame 5 machines. The 7EA has no O/S bolt, the Frame 5 units DO have OS bolts. We upgraded the control system for the 7EA machines in 2018 from MKVI to MKVIe and included with the hardware upgrade was the newer application code that...

Curious_One, glad I could help out on this one. I am sure GE has a specific reason why they do, what they do, but sometimes it is not always clear. It helps to keep us curious ones learning something new everyday. Thanks for your contributions and I look forward to comments and help from you...

Curious_One, I maintain 2 7EA's with DLN1. The units were purchased from Calpine after the crash of 2K, and were built as dual fuel. Our great state of CA would never even consider letting us run them on dirty diesel fuel, so we removed all hardware for dual fuel. The original logic for the...

CSA, lots of questions........waiting for an answer from the OP that don't seem to be getting answered.

Walidcontrol, is it possible for you to include some screenshots of what you are trying to do? Do both of these projects exist on the same workstation? What type of projects are these? I don't think you can copy blocks from one project to the next, but I have not specifically tried that. But if...

Dear Taki27, since you just joined yesterday I would suggest you first do some searching for past post related to this topic. I used the red microscope at the top of the page to start a search and searched for SRV. It returned many past posts related to this subject. This would be a great...

Walidcontrol, the libraries are usually referenced by your overall project as seen by one of the attached snips. Then each component of your system can reference those libraries if desired. So if you are creating an entire new project you will have to add all libraries desired to the project...

Dear NTH_P, I am reading your post and trying to make sure I understand your situation, some of your statements are not perfectly clear. If you were to upload a copy of your alarm log that may assist us. My experience has been that IF you have an analog input card configured with 3 I/O packs...

Dear idannb, I did a simple Google search for Steam Turbine Turning Gear and Gas Turbine Turning Gear and was able to find a large number of articles describing the system. You can also use the search feature of this forum to find many articles talking about issues with turning gear. There...

Good morning CSA. Thanks for your concern. My absence was just a very heavy outage workload for the last 18 months, and a little still from the change of hosting of control.com. I am glad to be back in with the group, as Curious_One noted this effort helps keep my troubleshooting mind active.

Dear sirdee90, The values you speak of, that are now indicating zero are typically stored in the NVRAM, or non-volatile RAM, of the UCVE or whatever version of the processor card you have in service. This NVRAM is a soldered on chip and not the CF or compact flash card you changed from the old...

Suenze2019, welcome to control.com. For any of us here to help you will need to provide a lot more information. What kind of machine is this? What control system? What troubleshooting steps have you performed? Did you recently have the machine offline for maintenance? What fuel does this...