Rockwell Automation T80004 Application Note Field Loop Configuration - Manual (Page 46)

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AN-T80004 Field Loop Configuration
Issue 10 Jun 13 AN-T80004 46
Digital Output module to FTA, integral power cable
The ‘integral power’ cables TC-215, TC-515, TC-217 and TC-517 have five extra cores from the
module to the FTA so that power can be supplied at the FTA. This is appropriate if the power supplies
are mounted with the FTAs and are distant from the system panels.
The power for each of the five power groups is wired to the FTA. This should be taken from bridged
dual supplies, as for ‘standard’ power cables above. The supply is wired to the module through the five
extra cores. The module switches each load, and the power to each load is wired to the FTA through
the I/O cable. The zero volt return from the load is wired back to the power supplies through the FTA.
There is no zero volt reference connection at the module end. Note that the five power groups can be
supplied from different voltages if required, but the zero volt returns are linked together on the FTA.