Allen-Bradley 81001-450-52-R – Industrial Power Supply Module | Bulletin 1771 / PLC-5 Platform
Engineering Background
The Allen-Bradley 81001-450-52-R is a dedicated DC power supply module engineered for the Bulletin 1771 I/O chassis ecosystem, the backbone of Rockwell Automation’s PLC-5 programmable controller platform. Designed to deliver stable, regulated DC bus power to I/O modules within the 1771 chassis, this unit has been deployed across decades of continuous industrial operation in sectors where power integrity is non-negotiable.
Product Positioning
Procurement engineers sourcing replacement or spare power supplies for legacy PLC-5 installations will find the 81001-450-52-R to be a direct, form-fit-function compatible solution. Konmask.com supplies this module from verified surplus and refurbished channels, each unit inspected and tested prior to dispatch, supporting both emergency replacement and planned maintenance programs.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 81001-450-52-R |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Product Family | Bulletin 1771 I/O Chassis Power Supply |
| Compatible Platform | PLC-5 Series (1771 I/O Chassis) |
| Module Type | DC Power Supply |
| Output Voltage | Regulated DC (chassis bus) |
| Mounting | 1771 I/O Chassis slot-mount |
| Form Factor | Single-slot module |
| Operating Temperature | 0°C to 60°C (32°F to 140°F) |
| Storage Temperature | -40°C to 85°C |
| Relative Humidity | 5% to 95% non-condensing |
| Approvals | UL Listed, CE Marked (original manufacture) |
| Condition Available | Surplus New / Tested Refurbished |
| Weight (approx.) | 100 g |
Proven Application Environments
- Automotive Manufacturing: Body-in-white assembly lines and paint shop conveyors running PLC-5 controllers with 1771 I/O racks.
- Oil & Gas Processing: Wellhead control panels and pipeline SCADA systems requiring uninterrupted DC bus integrity.
- Pulp & Paper Mills: Continuous process lines where power supply failure causes costly unplanned downtime.
- Water & Wastewater Treatment: Pump station and filtration control panels with long service-life requirements.
- Food & Beverage: Packaging and filling lines operating under strict uptime SLAs.
- Mining & Minerals: Conveyor and crusher control systems in harsh electrical environments.
Engineering Advantages
- Drop-in Replacement: Identical mechanical and electrical footprint to original factory specification — no chassis modification required.
- Regulated DC Output: Maintains stable bus voltage under varying I/O load conditions, protecting downstream modules from transient damage.
- Proven Longevity: Field-proven design with documented MTBF in continuous industrial duty cycles exceeding 10 years.
- Immediate Availability: Stocked at Konmask.com for same-day or next-business-day dispatch, minimizing production downtime windows.
- Tested Before Shipment: Each unit undergoes functional power-on verification and output voltage measurement prior to packaging.
System Architecture & Signal Flow
Within the 1771 I/O chassis, the 81001-450-52-R occupies the dedicated power supply slot and converts incoming AC line power to the regulated DC bus voltage distributed across all I/O module slots. The power supply interfaces directly with the chassis backplane, providing both logic power and field-side power rails to installed I/O modules. The PLC-5 processor communicates with I/O modules over the 1771 backplane bus; stable power delivery from this module is a prerequisite for deterministic I/O scan performance.
Signal flow summary: AC Input → Internal Rectifier & Regulation Stage → DC Bus → 1771 Chassis Backplane → I/O Module Logic & Field Power Rails.
Sourcing & Quality Verification
- All units sourced from traceable industrial surplus channels or authorized refurbishers.
- Visual inspection: housing integrity, connector condition, label legibility, no evidence of thermal stress or arc damage.
- Functional test: power-on verification, output voltage measurement under representative load.
- Anti-counterfeit check: part number, date code, and manufacturer markings verified against known-good reference units.
- ESD-safe packaging with desiccant for transit and storage protection.
- Warranty: 90-day functional warranty against defects in materials and workmanship.
Procurement Process
- Confirm Compatibility: Verify your 1771 chassis model and existing power supply slot configuration against the 81001-450-52-R datasheet.
- Request a Quote: Contact support@konmask.com or call +0086 19859288691 for volume pricing, lead time confirmation, and export documentation.
- Place Order: Add to cart and complete checkout, or submit a purchase order via email for net-terms B2B transactions.
- Receive & Verify: Inspect packaging seal and test report included with shipment before installation.
- Install & Commission: Follow Rockwell Automation 1771 chassis installation procedures; no firmware configuration required for power supply replacement.
Technical FAQ
Q: Is the 81001-450-52-R compatible with all 1771 chassis sizes?
A: This power supply is designed for the Bulletin 1771 chassis family. Compatibility depends on chassis slot configuration and power budget. Contact our engineering team to confirm fit for your specific chassis model.
Q: Can this module be used with ControlLogix or CompactLogix platforms?
A: No. This module is specific to the 1771 I/O chassis used with PLC-5 processors. ControlLogix and CompactLogix use different power supply form factors.
Q: What is the lead time for international orders?
A: In-stock units typically ship within 1–2 business days. International delivery via DHL/FedEx Express is 3–7 business days depending on destination. Export documentation (commercial invoice, packing list, COO) provided upon request.
Q: Do you provide a test report with each unit?
A: Yes. A functional test record is included with each shipment, documenting output voltage readings and inspection pass criteria.
Q: Can I return the unit if it does not fit my application?
A: We accept returns within 30 days for unused units in original packaging. Please contact support@konmask.com to initiate an RMA.
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Contact: support@konmask.com | +0086 19859288691
