justin lutz
Member
Greetings all...
So, as I've seen across the forum, this one has been beaten to death. Therefore, I am not going to ask how to program a lead/lag or flip-flop sequence, but rather, I would appreciate some feedback on what I have put together.
What I'm trying to accomplish (using RSLogix500):
1) On first power up, I would like to automatically select pump #1 to begin running. So, let's say the process does its thing for a while and is eventually powered down, or a loss of power occurs. On next power up, I would like to automatically select pump #2 to begin running. The point being - not default to running the same pump at start-up. I don't know if this is really even necessary, as it may not have a big impact if the process is rarely shut down. I do, however, need some way on first start-up to automatically designate a duty pump.
2) Say pump #1 has been pumping (is lead pump)and reaches the end of its cycle. I want to use the "end of cycle" status to alternate from pump #1 being lead to pump #2 being lead pump. In addition to the "end of cycle" status, other triggers will include a pump malfunction, pump failure to run, etc.
I have attached my .RSS (Program File 10) and .PDF files and would greatly appreciate comments, criticisms, advice, etc. Again, sorry to drag out an otherwise tired topic.
Thank you,
Justin
So, as I've seen across the forum, this one has been beaten to death. Therefore, I am not going to ask how to program a lead/lag or flip-flop sequence, but rather, I would appreciate some feedback on what I have put together.
What I'm trying to accomplish (using RSLogix500):
1) On first power up, I would like to automatically select pump #1 to begin running. So, let's say the process does its thing for a while and is eventually powered down, or a loss of power occurs. On next power up, I would like to automatically select pump #2 to begin running. The point being - not default to running the same pump at start-up. I don't know if this is really even necessary, as it may not have a big impact if the process is rarely shut down. I do, however, need some way on first start-up to automatically designate a duty pump.
2) Say pump #1 has been pumping (is lead pump)and reaches the end of its cycle. I want to use the "end of cycle" status to alternate from pump #1 being lead to pump #2 being lead pump. In addition to the "end of cycle" status, other triggers will include a pump malfunction, pump failure to run, etc.
I have attached my .RSS (Program File 10) and .PDF files and would greatly appreciate comments, criticisms, advice, etc. Again, sorry to drag out an otherwise tired topic.
Thank you,
Justin