Foxboro FPS400-24 Product Description
Product Overview
The Foxboro FPS400-24 is a high-power, industrial-grade 24 VDC power supply belonging to the Schneider Electric EcoStruxure Foxboro 200 Series, designed exclusively for powering Foxboro I/A Series and Evo™ DCS baseplates, fieldbus modules (FBMs), and control hardware. Delivering up to 400 W of regulated 24 VDC output, it is the only factory-certified power supply for Foxboro 200 Series I/O systems, ensuring full compatibility and reliability in distributed control environments. Built with a rugged, convection-cooled aluminum housing and conformal-coated circuitry, it meets ISA S71.04 G3 harsh environment standards and is certified for Zone 2 and Division 2 hazardous area applications. The FPS400-24 provides two input variants—wide-range AC/DC or 24 VDC input—to support global power standards, making it a cornerstone for reliable, high-availability DCS power infrastructure.
Basic Information
Manufacturer: Foxboro (Invensys, now Schneider Electric)
Model: FPS400-24 (Part Numbers: P0922YU for AC/DC input, P0922YC for 24 VDC input)
Product Type: Industrial DC Power Supply, 200 Series DCS Power Module
Applicable System: EcoStruxure Foxboro I/A Series DCS, Foxboro Evo™ Process Automation System
Mounting Style: DIN rail (horizontal/vertical), bracket, or wall-mounted
Protection Rating: IP20; sealed aluminum housing with conformal coating
Certifications: CE, UL, CSA, ATEX compliant; ISA S71.04 G3; certified for Zone 2/Division 2 hazardous areas
Input Options: P0922YU (85–265 VAC, 47–63 Hz; 108–145 VDC); P0922YC (18–35 VDC, nominal 24 VDC)
Output: 24 VDC ±2% regulation; 16.7 A maximum current; 400 W rated power
Efficiency: Up to 95% (P0922YU); up to 81% (P0922YC)
Operating Temperature: -20°C to +70°C (conformal coated); 0°C to +60°C (standard)
Storage Temperature: -40°C to +85°C
Relative Humidity: 5% to 95% non-condensing
Vibration/Shock: ISA S71.04 G3 compliant; 30 g half-sine shock (11 ms)
MTBF: ≥200,000 hours
Weight: Approximately 1.8 kg
Dimensions: 254 mm (H) × 152 mm (W) × 102 mm (D)
Country of Origin: United States
Function and Positioning
The FPS400-24 functions as the primary high-power 24 VDC power source for Foxboro DCS 200 Series I/O systems, positioned to deliver stable, isolated, and protected power to critical control hardware in process industries where power reliability directly impacts operational safety and uptime. Its core role is to convert raw AC or DC input into precision-regulated 24 VDC for baseplates, FBMs, field control processors (FCP270/FCP280), and auxiliary field devices, eliminating the risk of uncertified power supply incompatibility. The FPS400-24 supports 1:1 redundant pairing, enabling seamless auto-failover (≤20 ms) if a power supply fault occurs, which is essential for mission-critical applications. It features active power factor correction (PFC) on AC input models, reducing energy waste and harmonic distortion. With transformer-isolated outputs and comprehensive protection circuits, it safeguards against electrical noise, voltage transients, and fault conditions, ensuring uninterrupted DCS operation. As the only Foxboro-qualified power supply for 200 Series hardware, it simplifies system design, reduces integration risks, and lowers total cost of ownership through high efficiency and long-term reliability.
Core Performance Parameters
Output Power: 400 W continuous; 24 VDC ±2% line/load regulation
Output Current: 16.7 A maximum (24 VDC); current limiting at 110% rated load
Input Voltage: P0922YU (85–265 VAC, 47–63 Hz; 108–145 VDC); P0922YC (18–35 VDC)
Efficiency: Up to 95% (AC input); up to 81% (DC input)
Power Factor: ≥0.95 (P0922YU, full load)
Isolation: 1,500 VAC input-to-chassis; 500 VAC output-to-chassis
Protection: Overvoltage (28 VDC shutdown), overcurrent, short circuit, internal 10 A slow-blow fuse
Ripple/Noise: 100 mV p-p (20 MHz); 10 mV RMS maximum
Redundancy: 1:1 module redundancy; active-auto failover; redundant power input support
Diagnostics: Multi-color LEDs for power, status, and fault indication; relay alarm contact for remote monitoring
Cooling: Convection-cooled (fanless); no moving parts for high reliability
EMI Compliance: IEC 61000-4-2/3/4/5; G3 harsh environment noise immunity
General Adaptable Accessories
Redundancy Kits: 1:1 redundancy mounting brackets, synchronization cables, fault-tolerant interconnection wires
Mounting Hardware: DIN rail clamps, wall-mount brackets, horizontal/vertical installation kits, anti-vibration bases
Cables: Shielded AC input cables, DC output power cables, redundant power bus cables, alarm contact wiring kits
Termination & Protection: Surge protection modules, EMI filters, terminal blocks, bus bar distribution kits
Spare Parts: Replacement aluminum housings, LED indicator assemblies, internal fuses, connector kits, power input terminals
Compatibility Accessories: Foxboro 200 Series baseplates, FBM mounting kits, FCP power interface modules
Applicable Equipment and Fields
The FPS400-24 is designed for process industries requiring high-reliability, high-power 24 VDC power for Foxboro DCS systems, with a focus on hazardous and harsh environments. Key sectors include oil and gas (refining, petrochemicals, offshore platforms), thermal and nuclear power generation, chemical manufacturing, pulp and paper, water and wastewater treatment, pharmaceuticals, metals and mining, and fertilizer production. It is ideal for powering Foxboro I/A Series and Evo™ DCS baseplates, FBMs, FCP270/FCP280 controllers, and auxiliary field devices such as sensors, transmitters, and solenoids. The FPS400-24’s G3 harsh environment rating, Zone 2/Division 2 certification, redundant operation, fanless cooling, and global input voltage support make it the preferred power supply for mission-critical applications demanding stable, efficient, and safe power delivery for DCS infrastructure.
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