Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 810)

Section 15B
Replacement Procedures
15B-54
To replace the analog I/O:
1. Disconnect the cable running from the external power source to the
analog I/O.
ATTENTION: To guard against electrical shock hazards, never
make connections or disconnections at the AC distribution
network unless the main AC disconnect switch is open and
locked.
2. Disconnect the cables running from the external I/O devices to the
analog I/O.
3. Disconnect the fiber optic cables.
4. Remove the mounting screws, which are located at each corner of the
analog I/O.
Fuse
5. Replace the old analog I/O with a new analog I/O.
6. Replace and tighten the 4 mounting screws then reconnect all cables.
7. Set the node address to match that of the old analog I/O using the
switch assembly shown below.
This cover unsnaps and folds
down to expose switches
4 3 2 1
O
N
8. Set the unipolar/bipolar switches to match the settings on the replaced
analog I/O module.
15B.36
Replacing the Analog I/O