I would like to get some feedback on what method of control most of you prefer 4-20ma or a voltage loop like -10+10, 0-5v etc. I understand the noise considerations with voltage. I use a mix in my plants but determining a standard seems to be a Coke vs Pepsi argument. (all control loops are...
Rockwell, I admit rapes you on all the fee's, however, in a JIT manufacturing environment, the work flow is easier to understand.And easier to train users to troubleshoot. Because Rockwell is native to the US, and has a broader range of partners it is easeier for us to get replacement components...
HMI's are obsolete and no source code is available, the PLC code is available,however the wiring has been cobbled for many years so the prints are not reliable. I have been in touch with Rockwells migration assistance group, and I want to switch to AB because it is our company standard, I do not...
As a rule I do almost every thing as control reliable(dual reduntant),Just to avoid the hassle of doing a RA on everything. I am trying to put something together for senior managment to explain my actions. ( because we still do not do RA and keep them on file)
Yes I suppose it was vague, but you sometimes get a broader response, different documents reference class, some catagory, just looking for a breakdown if one exists, that can itemize when each is required, I believe it is 13849 but wanted to make sure, RA can always be done a little subjectively
I have an application with multiple axis cam'd to one another and the transition points are pretty rough. This is a welding application that tracks an oval path, as it transitions from the long radius to the short radius the torches jerk violently which affects the weld quality. I have adjusted...
