1768-PB3 | Allen-Bradley CompactLogix 24V DC Expansion Power Supply

Product Description

The 1768-PB3 is a high-performance expansion power supply specifically engineered for the Allen-Bradley CompactLogix platform. This module provides the necessary backplane power for 1768 controllers and associated I/O modules, ensuring stable voltage regulation and system integrity in demanding industrial environments.

Designed for seamless integration with the 1768-L43 and 1768-L45 series controllers, the 1768-PB3 (Ser A/B) converts a 24V DC input into the specific power levels required by the system backplane. It features advanced circuit protection to prevent damage from overcurrent or voltage fluctuations, maintaining the high availability required for automated manufacturing and process control.

Technical Specifications

• Model Number: 1768-PB3

• Brand: Allen-Bradley / Rockwell Automation

• Product Line: CompactLogix 1768 System

• Input Voltage: 24V DC (Nominal)

• Input Voltage Range: 16.8–31.2V DC

• Backplane Output Current (max): 3.5A at 5.2V DC; 1.0A at 24V DC

• Power Consumption: 95 VA

• Isolation Voltage: 30V (continuous), Basic Insulation Type

• Operating Temperature: 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit)

• Mounting: Right-side expansion (attaches directly to the controller)

• Status Indicators: Integrated LED for DC Power monitoring

Application Context

The 1768-PB3 is typically utilized in applications where localized DC power is preferred over AC distribution. It is a standard component in mid-range control systems involving motion control, complex data handling, or high-speed discrete I/O where the 1768-L4x controller architecture is deployed.

Technical FAQ

• Can the 1768-PB3 be used with 1769-L3x controllers?

  No, this power supply is exclusively designed for the 1768 bus. 1769 controllers utilize the 1769-PA2, PB2, or PA4 series power supplies.

• Does this module support hot-swapping?

  It is highly recommended to remove all system power before installing or removing the 1768-PB3 to avoid electrical arc-flash or backplane damage.