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Hello everyone.
I was asked to read application code to know the GT startup sequence.
It is a MS6001B GT with 88HR and 88CR.
I used to think it is 88HR that get shaft break away from zero speed. When L14HR is logic 0, 88HR stops, and 88CR began to run.
So L14HR is the trigger signal to get 88HR stopped and 88CR started, but i can't see that
in application code.<pre>
L34CRY L4Y L86CRTX l33cse L14HS L4CRT l4cr
------||-------|/|------|/|--------||---------|/|--------|/|------( )
l52cr |
------||----</pre>
L34CRY = Starting Means Cranking Control Logic;
L4CRT = Starting Means St. Motor Braker Did Not Pick Up;
l4cr = Starting Means Cranking Motor Start Command Logic<pre>
l52cr L34CRY
|/|--------(T)
20sec</pre>
It am confused about L34CRY. And i am confused which is the signal that make l4ct convert to logic 1.
In my site, during cooldown,the shaft will turn around for about 47° and stop for about 3 min. if START command was sent during that 3 min, will 88CR run while 88HR is stopped?
One more question, in this situation logic 1 is to get motor started. but i have seen logic like l4qez and l4hqe, when they are logic 0, the pumps will get started. I am confused about that. And how can i deduce it is logic 0 or 1 that will get motor started.
Above are the questions i have to ask master like CSA and others, thx.
CSA, i will continue the L4 journey later,sorry. I am a little exhausted with my job.
Best regards!
Neo
I was asked to read application code to know the GT startup sequence.
It is a MS6001B GT with 88HR and 88CR.
I used to think it is 88HR that get shaft break away from zero speed. When L14HR is logic 0, 88HR stops, and 88CR began to run.
So L14HR is the trigger signal to get 88HR stopped and 88CR started, but i can't see that
in application code.<pre>
L34CRY L4Y L86CRTX l33cse L14HS L4CRT l4cr
------||-------|/|------|/|--------||---------|/|--------|/|------( )
l52cr |
------||----</pre>
L34CRY = Starting Means Cranking Control Logic;
L4CRT = Starting Means St. Motor Braker Did Not Pick Up;
l4cr = Starting Means Cranking Motor Start Command Logic<pre>
l52cr L34CRY
|/|--------(T)
20sec</pre>
It am confused about L34CRY. And i am confused which is the signal that make l4ct convert to logic 1.
In my site, during cooldown,the shaft will turn around for about 47° and stop for about 3 min. if START command was sent during that 3 min, will 88CR run while 88HR is stopped?
One more question, in this situation logic 1 is to get motor started. but i have seen logic like l4qez and l4hqe, when they are logic 0, the pumps will get started. I am confused about that. And how can i deduce it is logic 0 or 1 that will get motor started.
Above are the questions i have to ask master like CSA and others, thx.
CSA, i will continue the L4 journey later,sorry. I am a little exhausted with my job.
Best regards!
Neo