J
Hi colleagues,
In our powerplant is one GE (PG9171) gas turbines with "MkV".
during stand up the restart of MkV occured and core <R><S><T> were ub A6 state
Alarms which occured on the core <RST>
(5) DCC ERRORS
Missing IO Card
IO cfg failed
------
(1) TCQA --A7
(4) **** -- A1 //QD1 (TCDA)
(5) **** -- A1 //QD2 (TCDA)
(8) LCCQ --A7
(12) DCCQ --A7
(13) IOMA -- A7
(15) TCEI -- A7
------
Read some posts on control.com searching for the solution
Checked (Power Supply voltages and test points - geh5980)
<T,S,R> and everything is OK. I also checked 125VDC...Battery Grounds - is OK ...
<PD> core voltages measured are +65.35V and -65.42V ...
I uploaded one more time core configuraton and after the restart no changes on A6
I also switched TCDA for the new one - but it gave no changes at all - still A6 after the restart
After all these steps above on working <R,S,T> I started to disconnect "JP" pins on TCDA cards:
step 1:
1) QD1 - TCDA loc1 - "JP" - disconnected - connected ...
2) QD2 - TCDA loc1 - "JP" - disconnected - connected ...
3) core <R> gets A7 state !!!!
step 2:
1) QD1 - TCDA loc2 - "JP" - disconnected - connected ...
2) QD2 - TCDA loc2 - "JP" - disconnected - connected ...
3) Core <S> gets A7 state !!!!
step 3:
1) QD1 - TCDA loc3 - "JP" - disconnected - connected ...
2) QD2 - TCDA loc3 - "JP" - disconnected - connected ...
3) Core <T> gets A7 state !!!!
<R,S,T,C> -- are A7 !!!
Super ...
But turning off and turning on again the supply for <R,S,T> brings back errors again and A6 stare
Repeating steps 1,2,3 causes getting back to A7 state
What's wrong.... any suggestions ??
--
Jarek
In our powerplant is one GE (PG9171) gas turbines with "MkV".
during stand up the restart of MkV occured and core <R><S><T> were ub A6 state
Alarms which occured on the core <RST>
(5) DCC ERRORS
Missing IO Card
IO cfg failed
------
(1) TCQA --A7
(4) **** -- A1 //QD1 (TCDA)
(5) **** -- A1 //QD2 (TCDA)
(8) LCCQ --A7
(12) DCCQ --A7
(13) IOMA -- A7
(15) TCEI -- A7
------
Read some posts on control.com searching for the solution
Checked (Power Supply voltages and test points - geh5980)
<T,S,R> and everything is OK. I also checked 125VDC...Battery Grounds - is OK ...
<PD> core voltages measured are +65.35V and -65.42V ...
I uploaded one more time core configuraton and after the restart no changes on A6
I also switched TCDA for the new one - but it gave no changes at all - still A6 after the restart
After all these steps above on working <R,S,T> I started to disconnect "JP" pins on TCDA cards:
step 1:
1) QD1 - TCDA loc1 - "JP" - disconnected - connected ...
2) QD2 - TCDA loc1 - "JP" - disconnected - connected ...
3) core <R> gets A7 state !!!!
step 2:
1) QD1 - TCDA loc2 - "JP" - disconnected - connected ...
2) QD2 - TCDA loc2 - "JP" - disconnected - connected ...
3) Core <S> gets A7 state !!!!
step 3:
1) QD1 - TCDA loc3 - "JP" - disconnected - connected ...
2) QD2 - TCDA loc3 - "JP" - disconnected - connected ...
3) Core <T> gets A7 state !!!!
<R,S,T,C> -- are A7 !!!
Super ...
But turning off and turning on again the supply for <R,S,T> brings back errors again and A6 stare
Repeating steps 1,2,3 causes getting back to A7 state
What's wrong.... any suggestions ??
--
Jarek