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In fact it is BC8084 Module for SERIE 6

Maybe there is need of Firmware for bus coupler & link selector I have a manual that showing how to do it

Do there is installed CSS-F gateway Alspa ?

I know that there is a called Hivision software for Hirschmann switch ... I do not know about that EPL LINK SELECTOR 8804 Can you provide Manufacturer ...

Hi Any progress?

You have to set up Excitation Min Max limit with these Potentiometers.. Generator capabilities curves and excitation limits can be yes checked during Var regulation

Hi Thank you for these datas Looks like you get "stucked " with RV3 Pot how to adjust it ? even manual describe how to do so Synchronise the generator using the manual raise/lower controls and then gradually apply load up to full rated load and power factor. The excitation should be raised...

Document reference is GFR-020C04000-EDC-200013 Rev B Diagnostics maintenance

Thanks! Check status of MFC3000 during loss of EPL Network it can help you to troubleshoot as I just read Alspa manual and Alstom advise to do that for troubleshooting

You can also consult the Historian ( to see if there is a stored event related to the issue) or messages viewer ...

Do you have Hirschmann ethernet switch installed if so you can connect to it see if there is malfunction ..

Thank you for the update Well if you say that you checked SAAM and nothing wrong were found .... I would rather try to troubleshoot the Communication protocol between the controllers and field devices ...

Hi Any diagnostics or process alarms annunciated ? I suggest to troubelshoot F8000 Field Network ...to see if any alarms come from there...

Hi Thank you for these details You can share USER MANUAL and Single line diagram to get a better picture of the installation We can then provide better assistance

Hi I would be glad to try to give a help !

@WTF? Thank you for these clarifications .... Waiting from Original Poster @Sean to provide more details as you well mentionned ..

Hi Pal I am doing well thank you for asking , hope all is well Can you tell us Control system associated to this unit? Also why Gas fuel supply overheating alarm coming if you operate unit on Liquid fuel? Are you referring to exhaust spread Temperature? If so some datas like trends would be...

Hi Which Geh-xxx manual did you read/follow to perform checking of the controllers?

Hi You can have a read on this good thread.. https://control.com/forums/threads/water-injection-in-gas-turbine-effect-on-efficiency.26674/

My advise will be to review app code see which signal name or case will trip GT /ST..