1756-PBR2K Allen‑Bradley DC power supply

Description

1756-PBR2K Allen‑Bradley DC power supply

Product Dimensions：

Product Detailed Description

The Allen-Bradley 1756-PBR2K is a conformal-coated redundant DC power supply bundle designed for the ControlLogix family of programmable logic controllers (PLCs). It provides high-reliability power distribution for industrial automation systems, ensuring continuous operation through 1:1 hot-swap redundancy. The bundle includes two 1756-PB75R DC redundant power supplies (each rated at 75W), two redundant power supply cables (such as 1756-CPR2 or equivalents), and a chassis adapter (1756-PSCA2). This configuration supports automatic failover in the event of a power supply failure, with built-in diagnostics for monitoring status and faults. The conformal coating enhances durability in harsh environments by protecting against moisture, dust, and contaminants. It is compatible with 1756 ControlLogix chassis (Series B and later) and integrates seamlessly with backplane power rails for modules like I/O, communication, and motion control components.

Product Parameters/Specifications

The following table outlines the key technical specifications for the 1756-PBR2K:

Product Advantages

• Enhanced Reliability: Provides seamless automatic switchover during power supply failure, minimizing downtime in mission-critical operations and extending mean time between failures (MTBF).
• Hot-Swap Capability: Allows replacement of a faulty supply without interrupting system operation, reducing maintenance time and costs.
• Diagnostic Features: Integrated LEDs and backplane monitoring enable quick fault identification, predictive maintenance, and remote diagnostics via ControlLogix software.
• Harsh Environment Resilience: Conformal coating and XT variants protect against corrosive elements, vibration, and extreme temperatures, making it suitable for demanding industrial settings.
• Scalability and Efficiency: Supports high-current outputs for large chassis configurations (up to 17 slots) while optimizing power usage, potentially reducing energy costs by up to 20% in redundant setups compared to non-redundant alternatives.
• Simplified Integration: Bundled components (supplies, cables, adapters) streamline installation, and compatibility with existing ControlLogix ecosystems ensures easy upgrades without major redesigns.

Precautions/Attention Matters

• Installation Guidelines: Install only in compatible 1756 ControlLogix chassis on the left-side slot; verify firmware and series compatibility (e.g., Series A or later) before deployment to avoid integration issues.
• Power Input Safety: Use only 18-32V DC sources; exceeding 32V can cause irreversible damage. Connect redundant supplies to separate, isolated power feeds for true fault tolerance—failure to do so may negate redundancy benefits.
• Environmental Limits: Do not operate outside 0-60°C or 5-95% non-condensing humidity to prevent thermal shutdowns or condensation-related failures. Ensure proper ventilation and enclosure to maintain these conditions.
• Handling and Grounding: Follow ESD (electrostatic discharge) precautions during handling; use proper grounding techniques to minimize electrical noise. Separate DC inputs from AC sources to avoid interference.
• Hazardous Locations: In Class I Division 2 areas, adhere strictly to installation codes (e.g., NEC/NFPA 70); do not use in explosive atmospheres without additional barriers.
• Maintenance Notes: Hot-swap only during stable operation; monitor for input voltage fluctuations. Firmware updates must comply with Rockwell Automation’s End-User License Agreement—DO Supply or third-party sellers do not provide or guarantee firmware.
• Warranty Considerations: Original manufacturer warranty applies only through authorized channels; third-party repairs (e.g., via DO Supply) offer limited 1-2 year coverage but may not include firmware support.

Product Applications

The 1756-PBR2K is ideal for high-availability industrial automation where power interruptions could lead to significant losses. Key applications include:

• Manufacturing and Assembly Lines: Powers redundant PLC systems for conveyor controls, robotic arms, and quality inspection stations, ensuring uninterrupted production.
• Process Control in Oil & Gas/Water Treatment: Provides fault-tolerant power for distributed I/O in pumping stations, valve controls, and monitoring systems in remote or hazardous sites.
• Power Generation and Utilities: Supports emergency shutdown (ESD) systems and SCADA integrations, maintaining reliability during grid fluctuations.
• Batch Processing and Packaging: Delivers stable power to motion control modules in food/beverage or pharmaceutical environments, where conformal coating resists washdown processes.
• Safety-Critical Systems: Used in automotive, aerospace testing, and mining operations for PLCs handling safety interlocks and real-time data acquisition, minimizing risks from single-point power failures.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

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