Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 492)

Section 9A
Operator Interface
9A-25
2. Connect AC power from the main power supply to the interface
assemblies. Daisy chain the power between the two assemblies. The
standard 9/Series power supply can supply power for two interface
assemblies. If your system requires more than two interface
assemblies in the same ring you must supply your own external
power to the interface assemblies. All interface assemblies in the I/O
ring must be powered when the system is running.
G
N
D1
2V
G
N
D5
VG
N
D
5V
G
N
D
5V
A
C
G
N
D1
2V
G
N
D5
VG
N
D
5V
G
N
D
5V
A
C
To 9/Series Main
Power Supply
L1
PE
L2
PE
L2
L1
3. Connect the 9/Series Fiber optic ring. Other devices can be in the
ring at any location but are not shown here for clarity.