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Rockwell Automation ControlLogix 1756-PA72 Series C User Manual

Rockwell Automation ControlLogix 1756-PA72 Series C
24 pages
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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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Rockwell Automation ControlLogix 1756-PA72 Series C Specifications

General IconGeneral
BrandRockwell Automation
ModelControlLogix 1756-PA72 Series C
CategoryPower Supply
LanguageEnglish

Summary

About the Power Supplies

Important User Information

Safety Warnings and Guidance

Details safety warnings, important notes, attention notices, shock hazards, and burn hazards.

Environment and Enclosure

Environmental and ESD Precautions

Specifies environmental ratings, enclosure requirements, and precautions against electrostatic discharge.

Safety-related PES

North American Hazardous Location Approval

European Hazardous Location Approval

Zone 2 Installation Warnings

Provides warnings and requirements for installing equipment in Zone 2 hazardous locations.

Before You Begin

Required Tools

Lists the necessary tools for installing the power supply, including screwdrivers and pliers.

Install the Power Supply

Chassis Compatibility and Installation Steps

Details power supply compatibility with chassis and outlines initial installation procedures.

Ground the Power Supply

Protective Earth Grounding Procedure

Details the steps for connecting the power supply to protective earth ground and the chassis.

Verify Grounding Configuration

Grounding Verification Steps

Confirms protective and functional earth grounds are connected, recommending a ground bus for reduced resistance.

Connect the Power

Power Connection Instructions

Provides instructions and diagrams for connecting AC and DC power supplies to the chassis terminals.

Remove Protective Label

Label Removal Guidance

Details the procedure for removing the protective label after chassis mounting and panel fabrication.

Activate the Power Supply

Power Activation Steps

Instructs users to flip the power switch to turn the power supply on and includes a diagram.

Determine Input Power Requirements

Power Input Graphs

Presents graphs illustrating backplane power load versus apparent/real power input for AC and DC supplies.

Power Requirement Calculation Method

Explains how to use the provided graphs to determine input power requirements based on backplane load.

Status Indicators

Indicator Status and Troubleshooting

Describes the green status indicator and provides troubleshooting steps for when it turns OFF.

Specifications

AC Power Supply Technical Specs

Lists technical specifications for 1756-PA72 Series C and 1756-PA75 Series B AC power supplies.

AC Power Supply Environmental Specs

Details environmental specifications for 1756-PA72 Series C and 1756-PA75 Series B.

AC Power Supply Certifications

Lists the certifications (UL, CSA, FM, CE, C-Tick, TÜV) for 1756-PA72 Series C and 1756-PA75 Series B.

DC Power Supply Specifications

DC Power Supply Technical Specs

Provides technical specifications for 1756-PB72, 1756-PB75, 1756-PC75, and 1756-PH75 DC power supplies.

DC Power Supply Environmental Specs

Details environmental specifications for DC power supplies, including operating temperature and humidity.

DC Power Supply Certifications (PB72/PB75)

Lists certifications for 1756-PB72 Series C and 1756-PB75 Series B DC power supplies.

DC Power Supply Certifications (PC75/PH75)

Lists certifications for 1756-PC75 Series B and 1756-PH75 Series B DC power supplies.

Additional Resources

Related Documentation and Links

Lists related Rockwell Automation publications, websites for documentation, and contact information.

Rockwell Automation Support

Installation and Technical Support

Provides contact information and guidance for initial installation problems and support.

Product Return Procedure

Outlines the procedure for returning products that are not functioning correctly.

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