Dear sir,
We have GE Gas turbine frame 9E duel fuel machine controlled by Mark V speedtronic control system.

the following alarms is coming frequently during normal running. what are the possibilities of that all all alarms, if any one faced some thing like that before? also what i can do with this alarm?
the following alarms are:<pre>
U SA P Drop Description
T1 1 C 1915 Voter mismatch, <R> L63AD1L
T1 1 C 4060 Voter mismatch, <T> SYS_LINE_FREQ
T1 1 C 2904 Voter mismatch, <T> L4PTR1_FB
T1 1 C 2898 Voter mismatch, <T> L30AS3
T1 1 C 2897 Voter mismatch, <T> L30AS2
T1 1 C 2896 Voter mismatch, <T> L30AS1
T1 1 C 2894 Voter mismatch, <T> L14L_ZE
T1 1 C 2892 Voter mismatch, <T> L12L_P
T1 1 C 2891 Voter mismatch, <T> L12H_P
T1 1 C 2890 Voter mismatch, <T> L52B_SEL
T1 1 C 2889 Voter mismatch, <T> L4_FB
T1 1 C 2888 Voter mismatch, <T> L5E_TCEA
T1 1 C 2883 Voter mismatch, <T> L28FDD
T1 1 C 2882 Voter mismatch, <T> L28FDC
T1 1 C 2881 Voter mismatch, <T> L28FDB
T1 1 C 2880 Voter mismatch, <T> L28FDA
T1 1 T 1697 TCE1 TMR check trouble, ETR2
T1 1 T 1713 TCE1 Loopback, solenoid, ETD1/SOL1/MTSV
T1 1 T 1696 TCE1 TMR check trouble, ETR1
T1 1 C 2903 Voter mismatch, <T> L4ETR2
T1 1 C 2902 Voter mismatch, <T> L4ETR1
T1 1 S 1697 TCE1 TMR check trouble, ETR2
T1 1 S 1696 TCE1 TMR check trouble, ETR1
T1 1 R 1697 TCE1 TMR check trouble, ETR2
T1 1 R 1696 TCE1 TMR check trouble, ETR1
T1 1 R 273 IOMA Power supply out of limits, P15
T1 1 T 273 IOMA Power supply out of limits, P15
T1 1 C 4050 Voter mismatch, <T> COMP_DISCH_P
T1 1 T 1744 TCE1 Flame detector #1 out of limits
T1 1 T 1747 TCE1 Flame detector #4 out of limits
T1 1 T 1746 TCE1 Flame detector #3 out of limits
T1 1 T 1745 TCE1 Flame detector #2 out of limits
T1 1 C 2913 Voter mismatch, <T> L86cstall
T1 1 C 2914 Voter mismatch, <T> L3CPDL
T1 1 C 4056 Voter mismatch, <T> TNH_OS
T1 1 T 1336 TCQA LVDT position diff high REG#1</pre>
any one can explain about this causes and which is create particular core?

 

Dear Bhavan,

We are facing the similar problem but in your case alarms are more.

It could be the problem with DCC on <T> processor or TCDA (3 at QD1).

There are other possible reason like ribbon cables and PROM failures.

Write back once it solved.

Take care
G.Rajesh

 

The problem definately looks like it is leading to a <T> controller problem. It could be an I/O problem as Rajesh has suggested or it could be a problem in <T> itself. One way or another you will need to get the machine offline and check out <T> and all it's associated ribbon cables, possible change of the TCQA board in <T> if you have a spare available, check out the link to the TCEA in slot 5 of <P> core (this is the protection card associated with <T>).

Can you give any more info. on how this problem came about, was it sudden or progressive? Has any work been done on the machine controls that may be concurrent with the fault?