Configured for power distribution in CompactLogix control architectures, the Allen-Bradley 1769-PB2 (1769-PB2 I/O Power Supply) provides direct electrical regulation from 19.2-31.2 VDC input sources to localized backplane output rails. This hardware component executes power conversion to deliver 2.0 A at 5 VDC and 0.8 A at 24 VDC to connected modules.

Hardware Specifications

Deterministic Network and I/O Density Scaling

The 1769-PB2 is engineered to maintain backplane bus communication velocity across CompactLogix platforms, supporting stable I/O density scaling. The module ensures deterministic network performance by mitigating power-related signal fluctuations that can impact high-speed data transmission. By maintaining firmware flash compatibility and consistent voltage regulation, this power supply supports the cyclic data exchange requirements of Profinet and EtherNet/IP platforms within industrial control environments.

Ordering Info

• Package contents: One (1) 1769-PB2 I/O Power Supply module.

• Required components: Compatible CompactLogix backplane and I/O modules (not included).

• Documentation: Installation guide provided as standard.

Field Installation Guidelines

• Mounting: Secure the module to a clean, flat surface or 35 mm DIN rail.

• Wiring: Terminate solid wires (22 to 14 AWG) or stranded wires (22 to 16 AWG) at the terminal blocks; ensure proper torque to maintain electrical contact.

• Grounding: Bond the module chassis to a common reference ground to reduce electromagnetic interference (EMI).

• Power: Confirm input voltage remains within the 19.2 to 31.2 VDC range; isolate from high-voltage AC lines to prevent noise injection.

Delivery Information

• Delivery time: 2-7 days when payment finish.

• Shipment: Transported via DHL/FEDEX/UPS.

• Handling: Components are sealed in anti-static industrial packaging to ensure integrity against electrostatic discharge and mechanical shock.

Frequently Asked Questions

Q: Does the 1769-PB2 support hot-swapping?

A: No, hot-swapping is not supported; power must be isolated from the system before installation or removal of the module to prevent electrical damage to the backplane.

Q: How is the maximum inrush current managed during startup?

A: The module is designed to handle an inrush current of up to 30 A at 31.2 VDC; ensure the external DC source can accommodate this transient load during initial power-up.

Q: Is the 24 VDC output current capacity fixed?

A: Yes, the 1769-PB2 provides a fixed capacity of 0.8 A at 24 VDC; ensure the total current draw of all modules on the backplane does not exceed this rating.