I am trying to capture I/O's for devices like valves, pumps with and without vfd, motors with overload...things like that.
I also notice on previous projects from other engineers, the I/O's they had captured for pumps had 2in/out and analog 1in/out. I dont understand really why there would be 2 in/out for a pump. I know that an analog in/out would mean that they have something controlling the motor through a VFD.
So, if anyone can tell me how many I/O's for each devices I had mentioned above and describe the functional of each I/O, I would appreciate it.
Oh, and the system I'm working on is a CIP system (clean in place syst) and what the pump does it pumps water from a supply tank and is controlled by a VFD. Another pump is a return pump with out a VFD. We also have a motor in the system, that is an agitator triggered through a limit switch. So what I'm really looking for are the rule of thumb from experienced engineers when they try to capture I/O's of a system.
if you
2007-11-28
10:07:56
·
2 answers
·
asked by
deepdiver
1