2
Fiber Ring Network (with 24 V DC Input and Output)
Connections inside a
smart array controller
Three-
phase
input
switch 2
Connections
inside a
box-type
transformer
Three-phase
power switch
2
Box-type transformer
busbar 2 A/B/C
Site cable:
Factory-installed
cable:
NOTE
Components in dashed-line boxes are optional. To highlight the involved area, the figure does not
show all factory-installed components and cables.
RS485 communications
terminal
LAN
switch
Three-
phase
input
switch 1
Three-phase
power switch 1
Box-type transformer
busbar 1 A/B/C
Signal
cable
Fiber
adapter
PE bar
ATB
Station-service power source
DC power
Ground
cable
5
24 V
DC power
module
24 V DC
output
switch
Single-
phase
input
24 V DC
switch
input and
output
terminals
24 V output 24 V input
MCB
L/N (L)
AC power
cable
cable
24 V
DC
input
switch