Allen-Bradley 1769-PA4 Selectable AC 4A/2A Power Supply – CompactLogix 1769 Series
Imagine a production line running at full capacity when the power supply feeding the PLC backplane silently degrades — voltage ripple creeps up, the processor resets mid-cycle, and the entire line halts. Unplanned downtime in discrete manufacturing can cost thousands of dollars per hour, and the root cause is often a failing or undersized power supply. The Allen-Bradley 1769-PA4 is engineered to eliminate exactly this scenario. Delivering selectable 4A or 2A output from a standard AC input, it provides the stable, regulated backplane power that CompactLogix systems demand — even in electrically noisy industrial environments.
Within the 1769 CompactLogix family, the 1769-PA4 occupies the high-current tier of AC power supplies, making it the preferred choice for larger I/O configurations and expansion banks that draw significant backplane current. Rockwell Automation’s CompactLogix platform is one of the most widely deployed mid-range PLC architectures globally, trusted across automotive, food & beverage, oil & gas, and water treatment industries. The 1769-PA4 is a cornerstone component of this ecosystem, and sourcing a genuine, tested unit is critical to system reliability.
Technical Specifications
- Catalog Number: 1769-PA4
- Series: Allen-Bradley CompactLogix 1769
- Input Voltage: 85–265V AC, 47–63 Hz (universal input)
- Output Current (selectable): 4A or 2A @ 5V DC backplane bus
- Power Dissipation: Refer to Rockwell Automation publication 1769-TD006
- Operating Temperature: 0°C to 60°C (32°F to 140°F)
- Storage Temperature: -40°C to 85°C
- Relative Humidity: 5–95% non-condensing
- Mounting: DIN rail or panel mount via 1769 bus connector
- Certifications: UL, CE, cUL (verify current listing with Rockwell Automation)
- Weight: Approx. 600 g
Note: All specifications are sourced from Rockwell Automation official documentation. Konmask.com does not fabricate or alter published specifications.
Key Features & Benefits
- Selectable Output Current: Switch between 4A and 2A to match your I/O load — reduces heat and extends component life when full current is not required.
- Universal AC Input: Accepts 85–265V AC without manual voltage selection, simplifying global deployment and reducing configuration errors.
- Regulated Backplane Power: Tight voltage regulation protects sensitive processor and I/O modules from transient spikes common in industrial environments.
- Compact Form Factor: Designed to integrate seamlessly into the 1769 bus system without consuming additional panel space.
- High MTBF: Built to Rockwell Automation’s industrial-grade reliability standards for continuous 24/7 operation.
- Hot-swap Compatible: Supports system architectures where minimizing maintenance downtime is critical (verify with your system configuration).
Industry & Equipment Applications
- Automotive Manufacturing: Body welding lines, paint shop conveyors, and assembly robots powered by CompactLogix controllers.
- Food & Beverage: Packaging lines, filling machines, and CIP (Clean-In-Place) systems requiring hygienic, reliable control power.
- Oil & Gas: Wellhead control panels, pipeline SCADA RTUs, and compressor station automation.
- Water & Wastewater Treatment: Pump station control, filtration process automation, and SCADA integration.
- Material Handling: Conveyor systems, sortation equipment, and automated storage & retrieval systems (AS/RS).
- OEM Machine Builders: Any OEM integrating CompactLogix into mid-range machine control panels requiring a robust AC power source.
System Integration & Compatible Parts
The 1769-PA4 is designed to work within the Allen-Bradley 1769 CompactLogix ecosystem. Compatible and commonly paired components include:
- Controllers: 1769-L16ER-BB1B, 1769-L18ER-BB1B, 1769-L24ER-QB1B, 1769-L30ER, 1769-L33ER, 1769-L36ERM
- Digital I/O Modules: 1769-IQ16, 1769-OB16, 1769-IA16, 1769-OA16
- Analog I/O Modules: 1769-IF4, 1769-OF4, 1769-IF8
- Communication Modules: 1769-L19ER-BB1B (EtherNet/IP integrated), 1769-AENTR
- End Caps: 1769-ECR (right end cap), 1769-ECL (left end cap)
- Expansion Cables: 1769-CRR1, 1769-CRR3 for remote I/O expansion banks
Contact Konmask.com if you need assistance identifying compatible modules for your specific system configuration.
Our Quality Assurance Process
Every 1769-PA4 unit sourced through Konmask.com undergoes a structured verification process before shipment:
- Visual Inspection: Housing integrity, connector condition, label authenticity, and firmware revision verification.
- Functional Power-On Test: Output voltage and current verification under load conditions.
- Traceability Documentation: Each unit is logged with source traceability records available upon request.
- Anti-Counterfeit Screening: Cross-referenced against known counterfeit indicators for Rockwell Automation products.
- Packaging: ESD-safe packaging with desiccant for long-term storage protection during transit.
How to Order
- Submit an inquiry via the Contact Us page or email [email protected].
- Provide your required quantity, delivery timeline, and destination country.
- Receive a formal quotation with lead time and shipping options within 24 business hours.
- Confirm the order and receive a proforma invoice for payment processing.
- Unit ships with full documentation and tracking information provided.
For urgent requirements or large-volume orders, please call +0086 19859288691 directly.
Why Choose Konmask.com?
- Industrial Automation Specialists: We focus exclusively on PLC, DCS, and industrial control components — not a generalist marketplace.
- Global B2B Supply: Serving engineering firms, system integrators, and MRO procurement teams across Asia, Europe, and the Americas.
- Verified Stock: All units are physically inspected and tested before listing — no drop-shipping from unverified sources.
- Technical Support: Our team includes engineers with hands-on CompactLogix experience who can assist with compatibility questions.
- Fast Quotation: Inquiry-to-quote turnaround within 24 business hours for standard requests.
- Competitive Pricing: Direct sourcing relationships allow us to offer market-competitive pricing without compromising on quality.
Frequently Asked Questions
Q: Is the 1769-PA4 compatible with all CompactLogix 1769 controllers?
A: The 1769-PA4 is designed for the 1769 CompactLogix I/O system and is compatible with the full range of 1769-series controllers and I/O modules. Always verify total backplane current draw against the 4A or 2A output rating before finalizing your configuration.
Q: What is the difference between the 1769-PA4 and the 1769-PA2?
A: The 1769-PA4 offers a selectable 4A/2A output, while the 1769-PA2 provides a fixed 2A output. The PA4 is preferred for larger I/O banks or when future expansion is anticipated.
Q: Can Konmask.com provide a certificate of conformance or test report?
A: Yes. Traceability documentation and inspection records are available upon request for B2B orders. Please specify your documentation requirements when submitting your inquiry.
Q: What is the lead time for the 1769-PA4?
A: Lead time depends on current stock levels and your destination. Standard orders typically ship within 3–7 business days. Contact us for real-time availability.
Q: Do you ship internationally?
A: Yes. Konmask.com ships globally via DHL, FedEx, and UPS. We handle export documentation and can assist with customs requirements for most destinations.
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