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power/data xfer headache

power/data xfer headache

power/data xfer headache

(OP)
I need to mount a PLC onto a piece of rotating equipment. any suggestions for power/data xfer??

RE: power/data xfer headache

Schick:
    I have had some experience with control and power wiring going into and out of rotating machinery; the machine was a strander, a machine which took individual copper strands (usually 19) and wound/stranded them onto one large reel.  The data and power transfer was accomplished with slip rings and brushes - and this was the greatest source of problems with this machine.  The power transfer was not so bad (it did not require extremely low resistance) but the data was a constant problem.  Only periodic cleaning and replacement of bad brushes kept it running at all.
    At the last Wire Show I attended before changing industries, the latest innovation in control of rotating machinery was on display - wireless data transfer.  Power was transfered with slip rings, and E-Stop control wires, but everything else was wireless.  I have noticed in my current industry that wireless data transfer is rapidly becomming more dependable, faster and cheaper; I'm thinking of wireless Ethernet in particular.  A stationary PLC communicating via wireless Ethernet with a remote I/O rack ought to do the trick.
    The wireless machinery I saw was manufactured by Bekeart (based in Belgium, but with plants in the US), and if you are not in a competing (wire manufacture) industry, they might share some insights with you.
    That's all I've got.  Best of luck.

RE: power/data xfer headache

How much power do you need and what kind of signal do you
want to access on the rotation part ?

<nbucska@pcperipherals.com>

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