Configured for redundant power supply connection in ControlLogix systems, the Allen-Bradley 1756-CPR2 (1756-CPR2 ControlLogix Redundant Supply Cable) provides direct electrical connection between redundant power supply components within ControlLogix chassis configurations.

Model Identification

The 1756-CPR2 is a ControlLogix redundant supply cable designed for power supply interconnection applications. The cable assembly supports redundant configuration arrangements and provides the required electrical path for ControlLogix power supply systems.

Hardware Specifications

ControlLogix Power System Integration

The 1756-CPR2 cable provides the physical connection required for redundant power supply configurations within ControlLogix platforms. It transfers electrical power between compatible ControlLogix power supply components according to system configuration requirements.

Allen-Bradley ControlLogix architectures use modular chassis-based communication and power distribution. The redundant supply cable works as part of this hardware structure by maintaining the connection path between redundant supply units.

The cable assembly does not provide independent communication processing. ControlLogix backplane communication, module data exchange, and controller execution remain managed by the installed ControlLogix chassis components.

Backplane And System Compatibility

The ControlLogix platform uses deterministic backplane communication paths for controller, I/O, and communication module operation. Proper cable installation supports stable power distribution for configured redundant supply systems.

Installation planning should consider chassis layout, cable routing distance, power supply compatibility, and grounding requirements before system energization.

Ordering Information

• 1 x Allen-Bradley 1756-CPR2 ControlLogix Redundant Supply Cable
• 1 x Factory cable assembly
• 1 x Standard protective packaging

Field Installation Guidelines

Cable Connection

• Verify that the redundant power supply configuration matches the ControlLogix system design.
• Confirm connector alignment before inserting the cable assembly.
• Avoid excessive bending or mechanical stress on the cable body.

Panel Routing

• Route the cable away from high-voltage power conductors where possible.
• Maintain proper cable support to prevent connector loading.
• Check cable length requirements before final chassis positioning.

Electrical Verification

• Confirm power supply wiring before applying system voltage.
• Verify correct chassis grounding according to installation standards.
• Check redundant supply status indicators after startup.

Frequently Asked Questions

• What is the primary function of the 1756-CPR2 cable?

The 1756-CPR2 provides the electrical connection path required for redundant power supply configurations in ControlLogix chassis systems.

• Is the 1756-CPR2 a communication cable?

No. The cable is designed for redundant power supply connection and does not perform controller or network communication functions.

• What ControlLogix series does this cable belong to?

The 1756-CPR2 belongs to the Allen-Bradley ControlLogix series hardware platform.

• What input current values are specified for this cable assembly?

The listed input current values are 970 mA at 5.1 VDC and 1.7 mA at 24 VDC.

• Can the cable be installed in standard ControlLogix systems without redundancy?

The cable is intended for redundant supply configurations and should be applied according to the selected chassis power architecture.

• Does the 1756-CPR2 support ControlNet communication?

The cable specification references a 5 Mbps ControlNet communication rate, but the cable itself is not a communication interface module.

• What installation factors affect cable performance?

Cable routing, connector condition, mechanical stress, and correct power system configuration affect installation performance.

• Is firmware required for the 1756-CPR2 cable?

No. The cable is a passive hardware assembly and does not contain programmable firmware.