Rockwell-automation T80004 Application Note Field Loop Configuration Manual do Utilizador descarregar pdf (Página 51)

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AN-T80004 Field Loop Configuration

Issue 10 Jun 13 AN-T80004 51

Cable earth and screen wires

At either end of an I/O cable there may be a braid or heavy gauge green or green/yellow cable. This is

the protective earth and should be bolted to safety earth. The chassis have a row of threaded holes for

terminating these braids.

On some I/O cables there may be a thin green wire. This is a screen earth and should be wired to a

separate terminal, connected to a clean reference earth separate from safety earths.

24V

Channel

250R

250R nominal

Channel

output

Channel

output

250R nominal

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Rockwell-automation T80004 Application Note Field Loop Configuration Manual do Utilizador Página 51