Allen-Bradley 1747-SN Installation Instructions Manual page 9

RIO Link
Connector
For New Installations
To ensure a proper earth ground of the cable shield, follow these steps:
1. While the RIO link connector is plugged into the scanner and lines 1 and 2
are connected, strip the cable back to expose enough shield drain wire to
reach a chassis mounting bracket.
2. Attach the ring terminal lug (supplied) to the end of the shield drain wire.
3. Attach the ring terminal lug to the SLC chassis mounting bracket. Note that
for new installations the middle (shield) terminal is not used when
connecting to the scanner.
IMPORTANT
Chassis Mounting
Bracket
The RIO cable shield must be grounded at the scanner end only.
Remote I/O Scanner
Terminating Resistor Last
RIO Scanner
RIO Link
Connector
Ring Lug
Shield Drain Wire
(For New Series B Installations)
Publication 1747-IN060B-EN-P - June 2001
Physical Device End
Terminating Resistor
Scanner End
Shield Drain Wire
(For Series A Retrofits)
9