Specifications

39
1768-SG001A-EN-P -- March 2006
CompactLogix Selection Guide
Step 5 - Select:
y
1768 power supply
y For more than eight 1769 modules,
additional 1769 power supplies as
needed
Power Supplies
The 1768 backplane requires one 1768 power supply. The power supply is a dual input
supply that operates in multiple ranges:
• 86 to 265V ac
• 108 to 132V dc
The power supply also offers a 24V dc external power source. The CompactLogix power
supply requires that a 1768 CompactLogix controller be installed to power the system.
• The power supply sends 24V dc to the controller located in slot 0.
• The controller converts the 24V dc to 5V dc and 24V dc and distributes it as needed:
– 5V/24V power to 1769 I/O modules on the right side of the controller
– 24V power to communication or motion modules on the left side of the
controller
The 1768 modules do not have a distance rating to the 1768 power supply. For the 1769
I/O modules in the 1768 system, the distance rating is from the controller and not the
1768 power supply.