Foxboro P0922YU FPS400-24 I/A Series Power Supply

P0922YU FPS400-24 is a high-power industrial power supply under Foxboro (Schneider Electric) I/A Series DCS platform, rated 400W 24VDC output. It adopts wide-range AC/DC dual-input design with active power factor correction, specially developed to supply stable 24V power for FCP controllers, FBM I/O modules and field communication cards of distributed control systems in continuous process industries.

This rack-mounted power unit supports N+1 redundant parallel configuration with built-in OR-ing diodes for hot-swap maintenance without system shutdown. Equipped with multi-stage electrical protection and full conformal coated PCB, it withstands wide temperature fluctuations, vibration and damp corrosive atmosphere, certified for Zone 2 hazardous cabinet installation in petrochemical and power plants.

Main Specifications

• Brand: Foxboro (Schneider Electric); Model: P0922YU FPS400-24; Series: I/A Series DCS Power Module
• Input Range: 85–265VAC 47–63Hz or 108–145VDC, nominal 125VDC input
• Output Rating: 24VDC ±0.2V, 16.7A continuous, total 400W rated power
• Conversion Efficiency: Up to 95% with active PFC, low heat loss for long-term cabinet operation
• Protection Mechanisms: Overload current limiting, overvoltage, short-circuit auto shutdown, reverse input polarity protection
• Mechanical: Standard cabinet wall mount, integrated aluminum heat sink, overall size 222×102×51mm, weight ~1.8kg
• Operating Environment: -30℃ ~ +71℃ working temp, 5%–95% RH non-condensing, IP20 cabinet grade
• Redundancy Support: Built-in parallel OR-ing circuit, multiple units for N+1 redundant power architecture
• Certifications: CE, UL, compliant with IEC hazardous area Zone 2 / Class 1 Div 2 standards

Core Functions

• Convert wide-range industrial AC/DC mains into stable regulated 24VDC power to feed I/A Series controllers, analog/digital I/O modules and fieldbus equipment.
• Active power factor correction minimizes grid harmonic pollution, reducing power consumption and extending service life of peripheral electrical equipment.
• Parallel redundant design enables seamless load sharing; single faulty unit can be hot-swapped without cutting power to the whole DCS rack.
• Dual-stage current limiting avoids cascading system trip caused by field wiring short-circuit or module internal breakdown faults.
• Large integrated aluminum heat sink realizes passive heat dissipation, eliminating fan failure risks and lowering long-term maintenance workload.
• Front panel LED status indicators visually display power input, normal output and fault alarm for rapid on-site troubleshooting.

Application Scenarios

• DCS power supply spare replacement for Foxboro I/A Series control cabinets in thermal power plants, gas turbine and boiler control rooms.
• Redundant power backup spare parts for petrochemical refineries, LNG liquefaction trains and natural gas pipeline process control systems.
• Maintenance inventory for offshore FPSO platforms, chemical pharmaceutical plants and metallurgical furnace distributed control cabinets.
• Matching power unit paired with Foxboro FCP270/FCP280 processors, FBM series I/O modules and fieldbus communication adapters.
• Retrofit replacement for aging DCS power units with output voltage drift, overheating and random shutdown faults.

• Global aftermarket spare stock for automation maintenance teams managing legacy Foxboro I/A Series distributed control equipment worldwide.