cat5 ethernet, 120V interference
cat5 ethernet, 120V interference
(OP)
I have a piece of equipment that I put on embedded rails (~30ft of rail) that requires a 120V feed and two ethernet cables to operate.
I want to run the ethernet and power through a reel to keep them from getting tangled, run over by fork truck ,etc. I want to run the cables together on the same reel, but I was told that the 120V line will interfere with shielded ethernet if they are not separated.
Should interference be a concern? It chance of data corruption dependent on amount of data (very little in this case)? Any suggestions?
I want to run the ethernet and power through a reel to keep them from getting tangled, run over by fork truck ,etc. I want to run the cables together on the same reel, but I was told that the 120V line will interfere with shielded ethernet if they are not separated.
Should interference be a concern? It chance of data corruption dependent on amount of data (very little in this case)? Any suggestions?





RE: cat5 ethernet, 120V interference
Have you considered using wireless ethernet? The distance is short enough for it to be reliable unless you have something really awkward like an adjacent arc furnace which could overwhelm the RF signal. Wireless ethernet is pretty forgiving over short distances unless conditions are really bad.
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RE: cat5 ethernet, 120V interference
I guess we will just try running on one reel, if there are problems we will simply cut a big hole in the cabinet for the unit and put another reel in there.
RE: cat5 ethernet, 120V interference
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RE: cat5 ethernet, 120V interference
that might seperate the power from ethernet enough to not have problems.
RE: cat5 ethernet, 120V interference
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: cat5 ethernet, 120V interference
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: cat5 ethernet, 120V interference
RE: cat5 ethernet, 120V interference
I would suggest that you review the wireless system again - if you can get it to work, it would save a potential maintenance problem.
May I suggest Linksys? I haven't tested it in the EAF area, but in another (low noise) area I have managed point to point communications of more than 100m with devices that cost about $70 each. One of their routers could be located at each end.
See http:/
RE: cat5 ethernet, 120V interference
We just ordered separate reels since the supplier would not even build ethernet/120V reel for us.
Thanks for all of the suggestions and help.
RE: cat5 ethernet, 120V interference
RE: cat5 ethernet, 120V interference
Industrial wireless ethernet is usually freq hopping (FHSS)rather than Direct Sequencing (DSSS, Wifi technology), which is slower, because of the technology. Industrial wireless ethernet also costs 20x what Wifi costs, but industrial ethernet can be far more reliable than wifi.
If the spectrometer is only providing small amounts of data: a relatively small table of values per scan, or even a few values at whatever wavelengths, then FHSS can be viable. If it's sending full bit maps of images, then the throughput might not be adequate.
Lots of vendors like Prosoft do industrial wireless ethernet.
Dan
RE: cat5 ethernet, 120V interference
RE: cat5 ethernet, 120V interference
Thanks for the report.
Merry Christmas.
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com