Rockwell Automation Publication 5069-IN019C-EN-P - October 2018
11
CompactLogix 5480 Controller
7. Insert the wire from an Earth Ground location into the first
Ground (
)
on the RTB.
The Earth Ground location can be the external SA power
supply, the DIN rail, or other Earth Ground location.
8. Turn the screwdriver to close the terminal on the wire.
The screw torque is 0.4 N•m (3.5 lb•in).
The following diagram shows an external 24V DC power supply that is
connected to the SA power RTB when you do not use UPS control
signals.
Connect SA AC Power
Before you connect an external AC power source to the SA power
RTB, make sure that the SA power source is properly sized.
For more information o n SA power, see
SA Power on page 7
.
1. Verify that the SA power source is not powered on.
2. Strip 12 mm (0.47 in.) of insulation from the wires that you
connect to the RTB.
3. Insert the wire from the L1/AC (+) connection on the external
power supply into the first SA (+) terminal on the RTB.
4. Turn the screwdriver to close the terminal on the wire.
The screw torque is 0.4 N•m (3.5 lb•in).
5. Insert the wire from the L2/N/AC(—) connection on the
external power supply into the first SA(—) terminal on the
RTB.
6. Turn the screwdriver to close the terminal on the wire.
The screw torque is 0.4 N•m (3.5 lb•in).
TIP
This
symbol denotes an Earth Ground terminal that provides a low
impedance path between electric circuits and earth for functional
purposes and provides noise immunity improvement. This connection
must be made for functional purposes.
24V DC
Power
Supply
+
–
24V DC
Power
Supply
+
–
MOD
Power
SA DC
Power
Earth Ground
IMPORTANT
SA power is only required if your application includes local
Compact 5000 I/O modules that are connected to devices that
use SA power.
