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Compact I/O Expansion Power Supplies
Assemble the System
1769 Compact I/O power supplies distribute power from either side of the power supply.
EXAMPLE
The maximum amount of current the system supports in both directions is:
• 1769-PA2, 1769-PA2K, 1769-PB2, 1769-PB2K: 2 amps at 5V DC; 1 amp at 24V DC
• 1769-PA4, 1769-PA4K, 1769-PB4, 1769-PB4K: 4 amps at 5V DC; 2 amps at 24V DC
IMPORTANT
The power supply can be attached to an adjacent I/O module before or after
mounting.
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Power Supply and Adjacent Module Components
Item
Description
1
Upper and lower tongue-and-groove slots
2
Bus connectors
3
Positioning tab
4
Direction of the bus lever of the power supply to the I/O modules
5
End cap terminator
6
End cap bus terminator
8
A 2 amp at 5V DC power supply (1769-PA2, 1769-PA2K, 1769-PB2, 1769-PB2K) can provide
1 amp to the right side of the power supply and 1 amp to the left. A 4 amp at 5V DC power
supply (1769-PA4, 1769-PA4K, 1769-PB4, and 1769-PB4K) can provide 2 amps to the right
side of the power supply and 2 amps to the left.
The maximum amount of current that can be distributed from either side of any 1769 power
supply is 2 amps at 5V DC and 1 amp at 24V DC.
This condition is a limit of the 1769 Compact I/O Bus.
Rockwell Automation Publication 1769-IN028I-EN-P - July 2020
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1
1
4
5
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