Redundant Power Supply Cable for ControlLogix Systems
In critical industrial automation environments, power supply redundancy is essential to maintain uptime and prevent costly production halts. The Allen-Bradley 1756-CPR2 Redundant Power Supply Cable is a specialized component designed to ensure reliable power delivery in ControlLogix chassis configurations.
Product Overview
The 1756-CPR2 is a 0.91 m (3 ft) cable manufactured by Allen-Bradley, a brand of Rockwell Automation. It is part of the ControlLogix series and serves as the connection between the redundant power supply module and the 1756-PCSA2 Chassis Adapter. This cable enables a redundant power architecture, which is critical for applications where power loss cannot be tolerated.
Technical Specifications Breakdown
Key parameters for the 1756-CPR2 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Cable Length | 3 feet (0.91 meters) |
| Weight | 0.64 pounds (0.293 kilograms) |
| Input Current | 970 milliamps at 5.1 Volts DC, 1.7 milliamps at 24 Volts DC |
| Thermal Dissipation | 17.4 BTU per Hour |
| Power Dissipation | 5.1 Watts |
| Slot Width | 1 |
| Operational Temperature Range | 0 to 60 °C (32 to 140 °F) |
Industry Applications
In a typical ControlLogix redundant power setup, the 1756-CPR2 ensures that if one power supply fails, the second unit takes over, preventing controller shutdown. This reduces unplanned downtime and protects critical processes.
Installation & Setup Guidance
When installing the 1756-CPR2, ensure the redundant power supply module and the 1756-PCSA2 chassis adapter are properly seated in the ControlLogix chassis. Connect the cable firmly between the two modules, verifying that the connectors lock into place. Route the cable away from high-heat sources and sharp edges to avoid damage. Always follow the manufacturer's guidelines for safe installation.
Maintenance & Reliability
Periodically inspect the 1756-CPR2 cable for signs of wear, such as cuts, fraying, or bent pins. Keep the connectors clean and free of debris. Operate the system within the specified temperature range of 0 to 60 °C to ensure long-term reliability. Regular visual checks during routine maintenance can prevent unexpected failures.
Compatibility & Integration
The 1756-CPR2 is designed specifically for Allen-Bradley ControlLogix redundant power supply systems. It connects the redundant power supply module to the 1756-PCSA2 chassis adapter. This cable is not intended for use outside of this specific configuration. Ensure your chassis and power supply modules are compatible with the ControlLogix series before integration.
Selection Guide & Purchasing Advice
When selecting a redundant power supply cable, verify the cable length matches your chassis layout. The 1756-CPR2 offers a 0.91 m (3 ft) length, suitable for standard cabinet installations. For longer runs, consider alternative lengths if available. For genuine Allen-Bradley parts and expert support, choose AutoDCSTech as your supplier.
Troubleshooting & Common Issues
If the redundant power supply does not activate, check that the 1756-CPR2 is fully seated at both ends. Inspect for bent pins or damaged connectors. Verify that the power supply modules are receiving correct input voltage and that the chassis adapter is properly installed. If issues persist, consult the ControlLogix system manual or contact technical support.
Availability & Condition at AutoDCSTech
| Part Number | 1756-CPR2 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
