Rockwell Automation Publication 5069-UM002A-EN-P - January 2019 25
CompactLogix 5480 System Chapter 1
• Connections to an SA power bus use a shared common. All inputs that
draw current from an SA power bus to power field-side devices have a
return through circuitry to the SA - terminal on the SA power
connector.
Figure 5 - External Power Supply Provides SA Power
IMPORTANT Each SA power bus has a shared common unique to that bus
because SA power buses are isolated from each other.
That is, the SA power bus that the controller establishes has a
shared common. If you use a 5069-FPD field potential distributor to
establish a new SA power bus, the second bus has its own shared
common for modules that draw current from it.
â„¢
NET B1
LINK B1
NET A1
LINK A1
NET A1
NET A2
SPEED X1
LINK X1
OK
RUN
FORCE
FAN 1
SD
FAN 2
CompactLogix 5480
1
2
5069-L46ERMW
CONTROLLER
UPS
MP
SA
R
B
F
R
B
F
Power
Supply
+
–
A 24V DC, 115V AC, or 240V AC
power supply is used based on
system configuration.
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