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First i would like to thank CSA for him selfless dedication to this thread ,and i think guys who have been following this thread learned a lot from this journey.
It would be good that more and more guys get involved in this journey, and i will continue to play the role of Watson.
<b>In order to make this journey in order and alleviate CSA's load, i would to propose several rules, and i wish everyone engaged will obey if you think they are reasonable.</b>
1) From PART II, i will start a new thread when there are about 15 to 20 replies, making it easier for guys to read. When a new thread is opened, guys who are following this thread can ask your questions about the previous one. I think this would make this journey in order.
2)Think a while before you ask, making it easier for CSA to answer.
<b>So guys you can ask your questions about the previous one. And CSA and i will do our best to continue this journey in PART 2. I will try to make PART 2 within 15 replies, making it easier for you to follow.</b>
Is that OK, CSA?
Here is the PART 1 URL: http://www.control.com/thread/1399292917
-------------------------------------------------------------------------------------------------------
Before interpreting signal L63QTX,i would like to make classification to the L94SD thing CSA mentioned several times.<pre>
(TNH>K60RB)----
| L28FDY L60RB
------------| |-----|/|--------( )
L60RB L94SD L83RB
---------|/|--------||----------( )
L28FD L83RB L94T
-----|/|-----||-------( )
(TNH>K60RB)----
| L60RB
------------| |------( )</pre>
L60RB L94SD L83RB
---------|/|--------||----------( )
L83RB L94T
---------|/|------------------( )</pre>
I didn't remove L94T from the L60RB rung, while i removed L28FDY from the L60RB rung and L28FD from L94T rung. I am confused about the existence of L28FDY in the L60RB rung and L28FD in the L94T rung, for i think as long as the speed ramps down to K60RB during normal shutdown,the L94T will go to logic 1.
I am curious about the difference between L28CAN and L28FD.
I find when any one of the can equipped with flame detectors flames out, L28CAN will go to logic 1. while two out of four flame detectors detects no flame, L28FD will go to logic 1. Can L28FD and L28CAN
replace the other?
If my time is available,i would like to check FSRSD block to see the variation of FSRSD during normal shutdown.
--------------------------------------------------------------------------------------------------------<pre>
L63QTX L45FTX L5ESTOP1_FZA L86GT L63ETH L63CSHH L4PSTX1
------|/|------|/|------|/|-------|/|-------|/|-------|/|-----( )</pre>
L63QTX = Lube Oil Gen Prssure Low Low Trip
L45FTX = Fire Indication Trip
L5ESTOP1_FZA=VPRO E-STOP PB Circuit Open
L86GT = Generator Protective Trip
L63ETH = Exhaust Duct Pressure High Trip
L63CSHH = Flow Inlet Duct Diff Pressure GT Trip
<b>L63QTX</b>
L63QTX is related to L63QT(Low L.O. Pressure TRIP). So when the L.O. pressure is too low to protect the bearings,L63QT will be logic 1.<pre>
L63QT L4 L63QTX
-------||--------||---------( )
L63QTX L4Y |
-------||--------|/|-------</pre>
L63QT = Lube oil Gen low pressure voted
L63QTX = Lube Oil Gen Prssure Low Low Trip
So why there is an existence of L63QTX? And can we change the above rung to the below;<pre>
L63QT L4 L63QTX
-------||--------||---------( )
L63QTX |
-------||-------</pre>
Or just below:<pre>
L63QT L4 L63QTX
-------||--------||---------( )</pre>
Best regards
Neo
It would be good that more and more guys get involved in this journey, and i will continue to play the role of Watson.
<b>In order to make this journey in order and alleviate CSA's load, i would to propose several rules, and i wish everyone engaged will obey if you think they are reasonable.</b>
1) From PART II, i will start a new thread when there are about 15 to 20 replies, making it easier for guys to read. When a new thread is opened, guys who are following this thread can ask your questions about the previous one. I think this would make this journey in order.
2)Think a while before you ask, making it easier for CSA to answer.
<b>So guys you can ask your questions about the previous one. And CSA and i will do our best to continue this journey in PART 2. I will try to make PART 2 within 15 replies, making it easier for you to follow.</b>
Is that OK, CSA?
Here is the PART 1 URL: http://www.control.com/thread/1399292917
-------------------------------------------------------------------------------------------------------
Before interpreting signal L63QTX,i would like to make classification to the L94SD thing CSA mentioned several times.<pre>
(TNH>K60RB)----
| L28FDY L60RB
------------| |-----|/|--------( )
L60RB L94SD L83RB
---------|/|--------||----------( )
L28FD L83RB L94T
-----|/|-----||-------( )
(TNH>K60RB)----
| L60RB
------------| |------( )</pre>
L60RB L94SD L83RB
---------|/|--------||----------( )
L83RB L94T
---------|/|------------------( )</pre>
I didn't remove L94T from the L60RB rung, while i removed L28FDY from the L60RB rung and L28FD from L94T rung. I am confused about the existence of L28FDY in the L60RB rung and L28FD in the L94T rung, for i think as long as the speed ramps down to K60RB during normal shutdown,the L94T will go to logic 1.
I am curious about the difference between L28CAN and L28FD.
I find when any one of the can equipped with flame detectors flames out, L28CAN will go to logic 1. while two out of four flame detectors detects no flame, L28FD will go to logic 1. Can L28FD and L28CAN
replace the other?
If my time is available,i would like to check FSRSD block to see the variation of FSRSD during normal shutdown.
--------------------------------------------------------------------------------------------------------<pre>
L63QTX L45FTX L5ESTOP1_FZA L86GT L63ETH L63CSHH L4PSTX1
------|/|------|/|------|/|-------|/|-------|/|-------|/|-----( )</pre>
L63QTX = Lube Oil Gen Prssure Low Low Trip
L45FTX = Fire Indication Trip
L5ESTOP1_FZA=VPRO E-STOP PB Circuit Open
L86GT = Generator Protective Trip
L63ETH = Exhaust Duct Pressure High Trip
L63CSHH = Flow Inlet Duct Diff Pressure GT Trip
<b>L63QTX</b>
L63QTX is related to L63QT(Low L.O. Pressure TRIP). So when the L.O. pressure is too low to protect the bearings,L63QT will be logic 1.<pre>
L63QT L4 L63QTX
-------||--------||---------( )
L63QTX L4Y |
-------||--------|/|-------</pre>
L63QT = Lube oil Gen low pressure voted
L63QTX = Lube Oil Gen Prssure Low Low Trip
So why there is an existence of L63QTX? And can we change the above rung to the below;<pre>
L63QT L4 L63QTX
-------||--------||---------( )
L63QTX |
-------||-------</pre>
Or just below:<pre>
L63QT L4 L63QTX
-------||--------||---------( )</pre>
Best regards
Neo