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  1. E

    MarkVIe Deadbus Breaker Closure Simulation

    Mark V TMR system is installed on our site for Frame V gas turbines. Mark V was initially configured with <I> but in 2008 <I> was upgraded to HMI (computer based and with cimplicity). Two gas turbines are installed at our site and each gas turbine has its own HMI in the GT compartment and we...
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    MarkV: L14HR and Racheting Issue

    CSA Our turbines do not have flame detected permissive to the cooldown sequence. I want to mention here that we are upgrading MarkV to MarkVIe on one of our turbines. Should we ask for this modification in the logic? This modification will increase the responsibility of operator...
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    MarkV: L14HR and Racheting Issue

    CSA I have to admit that your memory is very sharp. You never forget anything. Yes, coincidentally it's the same turbine. Last time we changed DCC card to solve the problem. The battery ground alarm is still present. We always rectify the battery ground problem, but somehow it always appears...
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    MARKV: R core A8 status and Bad EEPROM Checksum Error

    I am really sorry for late feedback. We changed the DCC card and our problem was resolved.
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    MarkV: L14HR and Racheting Issue

    Mark V TMR system is installed on our site for Frame V gas turbines. Mark V was initially configured with <I> but in 2008 <I> was upgraded to HMI (computer based and with cimplicity). Two gas turbines are installed at our site and each gas turbine has its own HMI in the GT compartment and we...
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    MARKV: R core A8 status and Bad EEPROM Checksum Error

    CSA Thank you for the explanation. I will write back as soon as we will perform any activity. Meanwhile same DCC error has annunciated once again. The alarm just appears for one or two minutes and then disappears.
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    MARKV: R core A8 status and Bad EEPROM Checksum Error

    Mark V TMR system is installed on our site for Frame V gas turbines. Mark V was initially configured with <I> but in 2008 <I> was upgraded to HMI. Two gas turbines are installed at our site and each gas turbine has its own HMI in the GT compartment and we have one HMI in the control room for...
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    MARKV: Swapping BNC Connectors of EX2000 and MarkV HMI on CTBA Card

    CSA This is how we check the ribbon cables and other things in annual shutdown. 1. Cleaning of MarkV cores/panel/cards. We power down all the cores of the MarkV from <PD> core. Then we use the compressed air to remove dust from the cards/panel (if there is any). 2. Checking of ribbon...
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    MARKV: Swapping BNC Connectors of EX2000 and MarkV HMI on CTBA Card

    CSA, Thanks for your feedback. Just one more question. If we are using BNC T connector say on JAI, and on one side of connector EX2K is connected and on the other side HMI is connected. Then what will happen if there is communication problem on EX2K? Say arcnet card is faulty or the coax...
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    MARKV: Swapping BNC Connectors of EX2000 and MarkV HMI on CTBA Card

    CSA, Thanks for your recommendation. If we go for recommendation one and say if we use T connector on JAI then will we leave JAJ open? I mean we don't have to use 93ohm termination resistor for JAJ. Right?
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    MARKV: Swapping BNC Connectors of EX2000 and MarkV HMI on CTBA Card

    CSA, We do check the ribbon cables in every shutdown. The turbines are shutdown once in a year for annual maintenance and checking. We will do it again in coming shutdown. So whenever a diagnostic alarm related to status-S occurs I should believe that the problem may be in hardware and I...
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    MARKV: Swapping BNC Connectors of EX2000 and MarkV HMI on CTBA Card

    CSA, I will try to explain the question again. We were having communication problem between EX2000 and MarkV. The communication between them was failed while the turbine was running. This problem do occur three to four times every year. Sometimes this problem goes away without doing anything...
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    Mark V: S Core Re-booted Several Times

    CSA Yes it was only the matter of time. The problem was appeared again just two weeks after the rectification. We changed the TCPS card and the problem was resolved. Now the core is running for last six months without rebooting. Gragesh Thanks for your reply.
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    MARKV: Swapping BNC Connectors of EX2000 and MarkV HMI on CTBA Card

    We have two GE Frame V gas turbines installed on our site. Each of the gas turbine is communicating with EX2000 and MarkV HMI (computer based and with cimplicity). The arcnet cables are terminated on CTBA card of the C core. Can we swap these cables on CTBA card? Is it possible while maintaining...
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    Mark V: S Core Re-booted Several Times

    CSA The gas turbine is running without any problem. I hope that the problem is solved. Yes we checked the cables first time, but at that time the core was not rebooting when we were pressing the connectors or cards. It just happened the second time. I hope that the problem is solved but...
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    Mark V: S Core Re-booted Several Times

    We have checked the IO states on the LCC display while the S core was in A7 status. Following IO cards were present (Their IO status is also shown).<pre> Object ID 1 TCQA A7 Object ID 4 TCDA A7 Object ID 8 LCCq A7 Object ID 12 DCCq A7 Object ID 13 IOMA A7 Object ID 15 TCEA...
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    Mark V: S Core Re-booted Several Times

    Thanks glenmorangie and CSA for you replies. I will write back as soon as we will perform any activity.
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    Mark V: S Core Re-booted Several Times

    First of all I am thankful to the contributors like CSA and others for sharing their experiences. I am a silent reader of this forum and found it very helpful. I want to express my gratitude for all the contributors and moderators for such a wonderful forum. Mark V TMR system is installed on...
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