Using Remote I/O

[markstg]

Hello,

I work for a major refining organization and we are considering using remote I/O for our PLC applications in new units we are building. Presently all existing PLC equipment for the plant is located in air conditioned buildings. By using remote I/O we expect to reap large cost savings in multipair instrument cable runs and less air conditioned building space needed. The PLC specs are 140 degree F, 95% humidity non condensing. Location is South Louisiana. Does anyone have experience with remote I/O in such conditions and how as it held up.

Thanks
Mark

 

[Cardoso]

From the top of my head, I would say for you to try

http://www.lumberg.com

The easy2connect modules are quite simple to work with and they have a IP67 protection. Not sure on temperatures, but I guarantee you by experience that it is quite a reliable equipment concerning liquids. And by liquids I don't mean only water...

 

[gristlehead]

Depending upon distance, and number of devices, you may reap more than you can imagine. By using profibus or profinet you can utilize the bus to not only connect to your remote discrete I/O but you can hang your analog on it as well with a DP/PA coupler, thus eliminating the analog I/O needed, in the area. Not only will you gain in reduced wiring cost, you'll gain the ability to fully diagnose, and calibrate your instruments from a remote location.
If the ID is larger than the OD then the whole is on the outside Right


If the ID is larger than the OD then the whole is on the outside Right?

 

[seanatkinson]

Try Cooper Crouse-Hinds for a remote IO they manufacture in Germany. We ahve good track record with this IO in a coler but wet environment.

 

[Rheinhardt]

Check this out

http://www.eng-tips.com/viewthread.cfm?qid=154048

Rheinhardt

--Off all the things i've lost , i miss my mind the most--