The Allen-Bradley 1756-PB75R is a ControlLogix rack-mounted redundant power supply designed to provide reliable DC power to the ControlLogix chassis. This unit supports a 24V DC nominal input and is engineered for high-availability applications where power redundancy is critical to system uptime.

Features

• Redundant power supply capability for ControlLogix chassis
• Designed for rack mounting directly into the ControlLogix system
• Supports a wide DC input voltage range for flexible power integration
• Provides stable 5V output for backplane communication and module operation
• Robust design suitable for industrial environments

Technical Specifications

Installation Guidelines

• Ensure the chassis is powered down before installing or removing the power supply module.
• Slide the module into the designated power supply slot of the ControlLogix chassis and secure the mounting screws to ensure proper grounding.
• Verify that the input voltage matches the specified 19-32V DC range before applying power.
• Maintain adequate clearance around the module to ensure proper airflow and cooling, especially when operating at higher ambient temperatures.
• Use appropriate wire gauges for the DC input terminals to minimize voltage drop and ensure secure connections.

FAQ

Is the 1756-PB75R compatible with all ControlLogix chassis?

The 1756-PB75R is designed for standard ControlLogix chassis. Please verify your specific chassis series and current draw requirements against the 75W output capacity to ensure system compatibility.

Does this power supply support redundancy?

Yes, the 1756-PB75R is specifically designed for redundant power configurations, allowing two power supplies to be installed in a single chassis to provide backup power in the event of a primary supply failure.