Allen-Bradley 1771-P5E Power Supply | Replacement, Equivalent & Selection Guide
The Allen-Bradley 1771-P5E is a high-reliability power supply module designed for the PLC-5 I/O chassis platform. It delivers stable regulated DC power to I/O modules within the 1771 backplane system, making it a critical component in legacy industrial automation environments. This page provides full technical specifications, compatible replacement options, and a structured selection guide to help engineers and procurement teams make informed sourcing decisions.
Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Part Number | 1771-P5E |
| Series | PLC-5 / 1771 I/O |
| Module Type | Power Supply Module |
| Input Voltage | 85–264 VAC, 47–63 Hz (universal input) |
| Output Voltage | +5 VDC, ±12 VDC (backplane regulated) |
| Output Current (5V) | 10 A |
| Chassis Compatibility | 1771 I/O Chassis (4, 8, 12, 16-slot) |
| Operating Temperature | 0°C to 60°C |
| Approx. Weight | 1.12 kg |
| Certifications | UL, CE, CSA |
Compatible Replacement & Equivalent Models
The following models are commonly evaluated as direct or functional replacements for the 1771-P5E. Always verify chassis slot compatibility and output current ratings before substitution.
| Model | Manufacturer | Compatibility Notes |
|---|---|---|
| 1771-P4S | Allen-Bradley | Same series, lower output current (7A); suitable for smaller chassis loads |
| 1771-P6S | Allen-Bradley | Higher capacity variant; drop-in replacement for high-load chassis |
| 1771-P7 | Allen-Bradley | Redundant power supply option for critical uptime applications |
| ICS Triplex / Third-Party | Various OEMs | Functional equivalents available; confirm backplane pinout before use |
Why Choose the Original 1771-P5E
- Guaranteed backplane compatibility — engineered specifically for the 1771 I/O chassis ecosystem
- Proven field reliability — decades of deployment in manufacturing, oil & gas, and utilities
- OEM firmware & diagnostics support — full integration with RSLogix 5 and Rockwell FactoryTalk
- Regulatory compliance — UL/CE/CSA certified for global industrial installations
- Reduced integration risk — no re-validation required when replacing like-for-like
Typical Applications
- Legacy PLC-5 control panel refurbishment and life extension projects
- Discrete manufacturing lines (automotive, food & beverage, packaging)
- Process control systems in chemical and petrochemical plants
- Water/wastewater treatment SCADA infrastructure
- Power generation and utilities automation
- Mining and material handling conveyor systems
System Compatibility
The 1771-P5E is designed to operate within the following Allen-Bradley system architecture:
- Processor compatibility: PLC-5/10, PLC-5/15, PLC-5/20, PLC-5/30, PLC-5/40, PLC-5/60, PLC-5/80
- Chassis: 1771-A1B (4-slot), 1771-A2B (8-slot), 1771-A3B (12-slot), 1771-A4B (16-slot)
- Communication: Compatible with DH+, Remote I/O, and ControlNet adapter modules in the same chassis
- Software: RSLogix 5, RSLinx Classic
Selection Guide
Use the following criteria to confirm the 1771-P5E is the correct power supply for your application:
- Step 1 — Identify chassis model: Confirm your 1771 chassis catalog number (A1B through A4B). The P5E supports all standard 1771 chassis.
- Step 2 — Calculate total backplane load: Sum the 5V and 12V current draw of all installed I/O modules. The P5E provides 10A at 5VDC — ensure this is not exceeded.
- Step 3 — Check input power availability: The P5E accepts 85–264 VAC universal input. Confirm your panel supply voltage is within range.
- Step 4 — Evaluate redundancy needs: For critical uptime requirements, consider pairing with a 1771-P7 redundant supply or upgrading to a ControlLogix platform.
- Step 5 — Confirm revision level: If replacing an existing unit, match the Series/Rev label to avoid firmware incompatibilities in older chassis revisions.
Quality Assurance & Sourcing
- Genuine OEM units sourced from authorized distributors and verified supply chains
- Refurbished / tested units available with full functional test reports upon request
- All units inspected for physical integrity, label authenticity, and backplane connector condition
- Counterfeit screening performed on all non-OEM-direct inventory
- Traceability documentation (CoC, test reports) available for regulated industries
How to Order
- Part Number: 1771-P5E
- Condition options: New OEM | Refurbished & Tested | Surplus
- Lead time: Contact us for current stock availability and lead time
- Minimum order: 1 unit
- Bulk pricing: Available for orders of 5+ units — request a quote
- Contact: support@konmask.com | +0086 19859288691
- Website: https://konmask.com
Replacement & Compatibility FAQ
Q: Can I use a 1771-P4S instead of the 1771-P5E?
A: Yes, if your total backplane current draw is within the P4S’s 7A rating. For chassis with 10+ I/O modules, the P5E’s 10A capacity is recommended.
Q: Is the 1771-P5E compatible with ControlLogix chassis?
A: No. The 1771-P5E is exclusively for the 1771 I/O backplane. ControlLogix uses the 1756 series power supplies (e.g., 1756-PA72, 1756-PB72).
Q: Can I replace the 1771-P5E without powering down the chassis?
A: No. The 1771-P5E is not a hot-swap module. A full chassis power-down is required for safe replacement.
Q: Do you supply test reports with refurbished units?
A: Yes. Functional test reports are available upon request for all refurbished inventory.
Q: What is the typical lead time for a new OEM unit?
A: Stock availability varies. Contact us directly for real-time inventory status and lead time estimates.
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Contact: support@konmask.com | +0086 19859288691
