1769-PA4 | Allen-Bradley CompactLogix I/O Power Supply Supplier

Introduction: The 1769-PA4 and the Evolution of CompactLogix Power

As industrial automation has evolved, the need for compact, reliable power supplies has grown. The 1769-PA4 from Allen-Bradley meets this demand as an I/O power supply for the CompactLogix platform. With a switch-selectable input voltage range of 85…265V AC or 170...265V AC, this module adapts to global power standards. Manufactured by Rockwell Automation, the 1769-PA4 is designed to power processors, controllers, and I/O modules in a space-saving form factor.

Key Features & Technical Specs of the 1769-PA4

• The 1769-PA4 provides a current capacity of 4.0 A at 5V DC and 2.0 A at 24V DC.
• It supports an input frequency range of 47…63 Hz.
• Power consumption is 200 VA at 120V AC and 240 VA at 240V AC.
• Maximum inrush current is 25 A at 132V AC.
• Power dissipation is 8 W at 60 °C (140 °F).
• The enclosure type is None (Open Style).
• Wire type must be copper wire rated for 90 °C, with solid wire size 22 to 14 AWG and stranded wire size 22 to 16 AWG.
• Dimensions are approximately 118 x 70 x 87 mm (4.65 x 2.76 x 3.43 in.).
• Weight is 525 g (1.16 lb).

A distinctive spec is the Power Supply Distance Rating of 8, meaning up to 8 I/O modules can connect on either side for a maximum of 16 modules. This allows flexible system expansion without additional power units.

Applications & Use Cases for the 1769-PA4

In manufacturing environments, the 1769-PA4 powers CompactLogix controllers and I/O modules in applications like packaging, material handling, and machine control. Its switch-selectable voltage range makes it suitable for global installations. For example, in a factory upgrading to CompactLogix, the 1769-PA4 provides stable backplane power for up to 16 modules, reducing the need for multiple power supplies.

Installation & Setup Guide

Mount the 1769-PA4 on a DIN rail or panel using the provided latches. Ensure the input voltage selector switch matches your line voltage (85…265V AC or 170...265V AC) before energizing. Use copper wire rated for 90 °C, with solid wire 22 to 14 AWG or stranded 22 to 16 AWG. Connect modules on either side, respecting the distance rating of 8 modules per side. The internal fuse is replaceable with Littelfuse 02153.15MXP or Wickmann 19195-3.15A.

Maintenance & Reliability Tips

Inspect the 1769-PA4 periodically for dust accumulation and ensure the enclosure remains open-style for airflow. Verify the fuse integrity if power issues arise. The unit operates in temperatures from 0 to 60 °C and withstands 30 g shock, contributing to long-term reliability. Regular inspection per the manufacturer’s manual helps prevent downtime.

Compatibility & Integration

The 1769-PA4 is part of the CompactLogix family and integrates with 1769-L3x processors and 1769 I/O modules. It provides backplane power to modules on both sides, supporting up to 16 modules total. No additional communication protocols are required for power distribution.

FAQ about the 1769-PA4

Q: What is the input voltage range of the 1769-PA4?

A: The 1769-PA4 has a switch-selectable input voltage range of 85…265V AC or 170...265V AC.

Q: How many I/O modules can the 1769-PA4 support?

A: It supports up to 8 modules on each side for a total of 16 modules, per its Power Supply Distance Rating of 8.

Q: What is the current capacity of the 1769-PA4 at 24V DC?

A: The current capacity at 24V DC is 2.0 A.

Q: What fuse types are used in the 1769-PA4?

A: The internal fuse can be replaced with Littelfuse 02153.15MXP or Wickmann 19195-3.15A.

Q: What are the dimensions of the 1769-PA4?

A: Approximate dimensions are 118 x 70 x 87 mm (4.65 x 2.76 x 3.43 in.).

Q: Is the 1769-PA4 certified for safety standards?

A: It holds c-UL-us, CE, and C-Tick certifications as stated in the data.

Product Support & Availability

The 1769-PA4 is in stock and ready to ship from Petro Auto Tech. Contact our team for pricing and lead times. Please verify current lifecycle status and availability with Petro Auto Tech before ordering.