1.Product Overview​

The ​Allen-Bradley 1756-PA72/C ControlLogix® Power Supply​ is a high-performance, dual-slot module delivering ​72W (3A @ 24V DC)​​ of stable power for mission-critical automation systems. Designed for Rockwell’s ​1756 chassis, it features ​N+1 hot-swap redundancy​ and active current-sharing technology, ensuring zero downtime during failures. Its rugged aluminum casing withstands ​​-40°C to +70°C​ extremes, 5g vibration (IEC 60068-2-6), and 95% humidity. Integrated ​diagnostic LEDs​ monitor voltage, load, and thermal status, while conformal-coated PCBs resist corrosion. Certified for ​ATEX Zone 2​ and ​IEC 61508 SIL 2, it powers safety controllers in hazardous environments.

2.​Critical Technical Specifications​

​Reliability-focused parameters:

• ​Input Voltage: 85–265V AC (50/60Hz) or 120–250V DC (auto-sensing)
• ​Output Regulation: ±1% deviation (19–30V DC) @ full load
• ​Efficiency: 88% typical (EN 61204-3 compliant)
• ​Protections: Short-circuit (auto-recovery), over-voltage (28V clamp), over-temperature (90°C shutdown)
• ​Redundancy Tolerance: ≤5% load imbalance during parallel operation
• ​Hold-up Time: 20ms @ 100% load during power loss
• ​Isolation: 1500V AC input-to-output (EN 50178)
• ​MTBF: >500,000 hours @ 40°C (IEC 61709)
• ​Certifications: UL 61010-1, ATEX II 3G Ex ec IIC T80°C Gc, RoHS III

​3.Targeted Applications​

​Critical power scenarios:

• ​Oil & Gas: SIL 2-rated safety shutdown systems (SIS) in API 14F facilities
• ​Pharmaceutical: Redundant power for bioreactor controls (21 CFR Part 11)
• ​Power Generation: Turbine control cabinets requiring <10ms ride-through
• ​Water Treatment: Flood-resistant pump station PLCs (NEMA 4X)
• ​Automotive: 24/7 robotic welding cells with vibration immunity
• ​Mining: Group I/II hazardous location control cabinets
• ​Continuous Processes: Batch reactor safety interlocks

4.​Competitive Advantages​

​Operational superiorities:

• ​Zero Downtime: Hot-swappable design enables <2-minute replacements
• ​Global Compliance: Single SKU supports worldwide voltages/certifications
• ​Predictive Diagnostics: Load/voltage monitoring via backplane tags
• ​Energy Optimization: Fanless cooling reduces heat dissipation by 40%
• ​Phase Loss Immunity: Operates stably with single-phase grid faults
• ​Space Efficiency: Dual-slot form saves 40% chassis space
• ​Lifecycle Economy: 50,000+ power cycles (2× industry standard)
• ​Safety Integration: SIL 2 architecture for redundant safety PLCs

5.​Functional Capabilities​

​Advanced power management:

• ​Active Load Sharing: Auto-balances current (±0.5A) across parallel units
• ​Brownout Resilience: Maintains output regulation during 15ms interruptions
• ​Fuse-Less Protection: Solid-state current limiting (replaces fuses)
• ​Synchronization: LED indicators display master/slave status
• ​Inrush Control: Soft-start limits peak current to 20A during cold starts
• ​Redundancy Coordination: Syncs with 1756-PSCA power monitors
• ​Event Logging: Stores 10+ faults (overload/temperature) with timestamps
• ​Studio 5000® Integration: Real-time health data via controller tags

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Packaging & Shipping

Company Information
Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.
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