Recent content by Esoteric_Stone

Ahmed, Can we get some more information about the problem? Is your system Simplex, Dual or TMR? Was your machine running and you found fault on the UCSA controller and want to replace it? Do you have the empty CompactFlash with the spare controller? Have you tried to install the CompactFlash...

CSA >So, in essence, it's still a pressure >control loop with LVDT feedback; just like in the Mark V,. Spot on. It is pressure control loop. Only regulator used is Position Control. I have only one confusion though. If pressure control can be done in application code then why a separate...

Vinokpandey Meanwhile you can read the post below to get some more insight. https://my.control.com/thread/1493106463 Cheers.

Vinodkpandey I am not writing this from experience. I am ONLY discussing it theoretically. Hopefully CSA will share his experience. I am assuming your MarkVIe is TMR. GCV, SRV and IGV have one servo and two LVDTs. Servo is driven by total three outputs one each from R, S and T. There were...

CSA >Because L4DE and L33CSE are in parallel, if EITHER L4DE >>>OR<< L33CSE are Logic "0" >>OR<< L3SMTX is a logic "1" AND >L14HA is a logic "0" then L3SMT will be a logic "1" and the >turbine will trip. Spot on. Thanks for the correction.

The diagram in the above post is<pre> +125VDC---------------------------------------------------- | | (33 Kohm) | |____________ (Ground) (contact)...

SANJAY MALLIk CSA has written in the above post <I don't know if you have Rung Display on that Mark IV (it wasn't on every Mark IV), or you will have put all the elements of the L3SMT rung (if that's the correct logic name!) on the Logic Forcing Display and watch to see which one is...

CSA Wow. Excellent. Very well explained. I have entered in Gas turbine controls world in 2014 and I do not have experience like you. You have more experience than my age!. I consider myself as your student as I have learned a lot from you via this forum and want to learn more. >As for the...

CSA I need you assistance in understanding concept about grounding in switches. I am looking at Appendix D (Signal Flow Diagrams) of GEH-6195 for writing this. Contact input (switch) is connected across POS and RET of DTBA. POS is connected to P 125VDC via a jumper and RET is connected to...

Nw_Duk If you want to change the functionality of standard blocks, then I guess it is not possible. The blocks work as they are supposed to work. You can just add new blocks and change the parameters of existing blocks. To add new block you need to use block diagram editor in ToolboxST. You...

J. You will get the detailed reply from CSA. As far as I can tell you must check the SOVs which are actuated just before the grounding alarm appears. You can check the Events, SOEs and historical alarms. If you find that the alarm comes when SOV operates, then you need to check the loop of...

CSA Very good explanation. You are good at explaining things. Rokan_123 When we choose the pre-select mode the GT load remains constant. If the frequency changes the TNR changes automatically. The preselect mode will keep the TNR-TNH constant. This is how it will keep the load constant...

Sanjay Probably more information is required to know what was wrong at your site. Can you provide the list of process and diagnostic alarms before or after the trip? What are the maximum RPM at your site? Do you have separate speed pickups for turbine and starting diesel engine as you said...

CSA You have explained it all. You are so good at explaining things. On our site we have three options for synchronization 1. Auto synchronization from HMI (Uses all three relays) 2. Manual Synchronization from HMI (Uses all three relays. There is bypass logic for some relays in CSP)...

>MFT trip due to broken support of the HRSG location is the >just before the entrance of exhaust in HRSG. Then ST trip >within a 10 second after that GT trip on that time. Although >GT exhaust site damper is ok mechanical movement is ok. I >want to know proper explanation why it is TRIP. If...