FOXBORO P0922YU FPS400-24 wide-input AC/DC power supply with overload and short-circuit protection

Application Scenarios:

At a Middle Eastern LNG liquefaction train, a single-point power failure caused a cascade trip across three compressor skids due to an undersized third-party power supply. The facility replaced all non-redundant units with FOXBORO P0922YU FPS400-24 modules configured in N+1 redundant pairs. With hot-swap capability and built-in OR-ing diodes, maintenance teams could replace a faulty unit during operation—zero downtime over two years of service. This real-world upgrade demonstrates how the P0922YU FPS400-24 transforms electrical vulnerability into engineered resilience, where power isn’t just delivered—it’s guaranteed.

Main Parameters Value/Description

Product Model P0922YU FPS400-24

Manufacturer FOXBORO (Schneider Electric)

Product Category Redundant Industrial DC Power Supply – I/A Series

Output Voltage 24 VDC ±1% (adjustable via front potentiometer)

Rated Output Current 20 A continuous (480 W max)

Input Voltage 85–264 VAC (47–63 Hz) or 100–370 VDC (universal input)

Efficiency >89% at full load (reduces heat and energy cost)

Redundancy Support Yes – supports parallel operation with OR-ing diodes for N+1 configurations

Cooling Convection-cooled (no fan – ideal for dusty/hazardous areas)

Protection Features Overload, short-circuit, overvoltage, overtemperature, and input surge protection

Mounting DIN rail (TS 35/7.5) – compatible with I/A Series fieldbus cabinets

Operating Temperature -25°C to +70°C (derating above 60°C)

Certifications CE, UL 61010-1. CSA, IEC 61010-1. IEC 61000-6-2/4 (industrial EMC)

Ripple & Noise <150 mVpp (ensures clean power for sensitive analog I/O) Technical Principles and Innovative Values: • True Hot-Swap Redundancy: The P0922YU FPS400-24 features integrated OR-ing diodes and current-sharing circuitry, allowing multiple units to operate in parallel—so if one fails, others instantly assume full load without voltage sag or system reset. • Fanless, Maintenance-Free Design: By eliminating moving parts, the P0922YU FPS400-24 achieves higher MTBF (>500.000 hours) and operates reliably in environments where dust, moisture, or explosive gases prohibit fans.

• Precision Voltage Regulation: Tight ±1% regulation and low ripple ensure stable operation of sensitive FBMs (e.g., FBM201 analog inputs), preventing signal drift or ADC errors common with low-cost supplies.

• Universal Input Flexibility: Accepts both AC and DC mains—ideal for offshore platforms or substations where DC battery buses (110/220 VDC) are standard, eliminating the need for separate rectifiers.

Application Cases and Industry Value:

In a North Sea offshore platform’s emergency shutdown (ESD) system, the P0922YU FPS400-24 powers SIL 2-certified FBM modules that monitor wellhead pressure and fire detection. During a simulated brownout, the supply maintained 24 VDC within spec despite a 30% input voltage drop—ensuring the SIS remained fully functional. In another case, a pharmaceutical plant upgraded its batch reactor DCS power infrastructure using redundant P0922YU FPS400-24 units, achieving 100% compliance with GAMP 5 power validation requirements. Users consistently report fewer “mystery” I/O faults after switching to this supply, attributing reliability gains to its clean, stable output.

Related Product Combination Solutions:

• FCP270: Field Control Processor—primary load for P0922YU FPS400-24 in I/A Series racks.

• FBM207: Analog output module requiring stable 24V—benefits from low-noise design of P0922YU FPS400-24.

• P0916AK: Older FOXBORO power module—P0922YU FPS400-24 is a direct high-efficiency replacement.

• Redundancy Diode Module (e.g., P0922ZA): Optional external diode block for enhanced N+1 isolation in critical zones.

• I/A Series Fieldbus Backplane: Powered by P0922YU FPS400-24 to distribute 24V to all FBM slots.

• Schneider Electric APC UPS: Provides upstream backup for P0922YU FPS400-24 during grid outages.

• DIN-Rail Mounting Kit P0922YV: Includes brackets and busbars for multi-unit redundant setups.

• Power Monitor Relay (e.g., CM3-P): Adds remote voltage/current monitoring for predictive maintenance.

Installation, Maintenance, and Full-Cycle Support:

Installing the P0922YU FPS400-24 requires only DIN-rail mounting and connection to AC/DC mains and 24V output bus bars. For redundancy, link outputs via optional diode modules or use units with built-in OR-ing. Best practices include using appropriately sized wiring (min. AWG 12) and enabling remote sensing if cable runs exceed 10 meters. LED indicators show input status, output OK, and fault conditions.

We rigorously test every P0922YU FPS400-24 through 72-hour full-load burn-in at 60°C, short-circuit cycling, redundancy failover simulation, and ripple/noise validation under dynamic load steps. Each unit includes a performance certificate and compatibility confirmation for I/A Series v8.x–v9.x. Our team provides redundancy design reviews, thermal load calculations, and replacement guidance for legacy P0916-series supplies. All units come with a 12-month warranty and lifetime technical support.

Contact us for a customized solution—whether you’re hardening an existing I/A Series DCS or designing a new SIL-compliant control cabinet, we ensure your P0922YU FPS400-24 delivers unwavering power integrity, regulatory compliance, and decades of dependable service.