Installation Instructions
Original Instructions
Compact I/O Expansion Power Supplies
Catalog Numbers
1769-PA2,1769-PA2K, 1769-PB2,1769-PB2K, 1769-PA4,1769-PA4K,
1769-PB4,1769-PB4K
Compact I/O™ power supplies provide 120/240V AC and 24V DC power to modules, which
you can place to the left or the right side of the 1769 power supply. As many as eight I/O
modules can be placed on each side of the power supply.
Topic Page
Summary of Changes 2
Before You Begin 5
Assemble the System 8
Mount an I/O Expansion Power Supply 10
Verify Your System Power 13
Power Considerations 14
Use a Master Control Relay 16
Schematic (Using IEC Symbols) 17
Schematic (Using ANSI/CSA Symbols) 18
Connect the Power Supplies 18
Connect Field Wires 20
Replace the Fuse 23
Temperature Derating 24
Power Dissipation 27
Specifications 29
Additional Resources 33
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