Connect with us

isolating RS-485 suggestions

Discussion in 'Electronic Basics' started by jibberjabber, Mar 23, 2006.

Scroll to continue with content
  1. jibberjabber

    jibberjabber Guest

    I've found a few basic ways to do this:

    1) Use a standard non-isolated RS-485 transceiver, and isolate the
    data/control lines going to it with 6N137 optoisolators.
    2) Use an isolated transceiver.

    With either of these methods you have to provide isolated power to the
    transciever chip:
    a) use a small isolated DC-DC converter
    b) use a small transformer (P/N ??)

    9600 baud, 300' distance

    Any suggestions or alternate methods? thx
     
  2. Deefoo

    Deefoo Guest

    Go wireless with those small 400-something MHz modems.

    or

    - Ethernet.
    - Current loop.
    - Power the isolated transmitter by the receiver (i.e. use more wires)

    --DF
     
  3. jibberjabber

    jibberjabber Guest

    We're commited to 485 and I need to isolate a leg. Is there a "best" way
    to do it?
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-