Installation Instructions
ControlLogix Power Supplies
Catalog Numbers 1756-PA72 Series C, 1756-PB72
Series C, 1756-PA75 Series B, 1756-PB75 Series B,
1756-PH75 Series B, 1756-PC75 Series B
About the Power Supplies
ControlLogix power supplies are used with the 1756 chassis to provide 1.2V, 3.3V, 5V, and
24V DC power for all modules installed in the chassis. The non-redundant power supplies are
mounted on the left end of the chassis, where they are plugged directly into the backplane.
Topic Page
Important User Information 2
Environment and Enclosure 3
Safety-related Programmable Electronic Systems 4
North American Hazardous Location Approval 4
European Hazardous Location Approval 5
Before You Begin 5
Install the Power Supply 6
Ground the Power Supply at Protective Earth Ground 8
Connect the Power 10
Remove the Protective Label 11
Activate the Power Supply 12
Determine the Input Power Requirements/Transformer Sizing 12
Status Indicators 14
Specifications 15
Additional Resources 23
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