Email: sales@slxytech.com
WhatsApp / Wechat：8617062388866
Phone：+86 17062388866Description
The Emerson FOXBORO P0922YU FPS400-24 is a high-performance 400W modular power supply designed for critical industrial automation systems. Part of Emerson’s Field Power Supply (FPS) series, this unit delivers ultra-stable 24VDC power to DCS cabinets, safety instrumented systems, and high-density I/O racks. The FOXBORO P0922YU FPS400-24 features dual-redundant AC inputs with active power factor correction (PFC >0.99), achieving 94% efficiency while minimizing harmonic distortion. Its modular hot-swap design enables live maintenance and N+1 redundancy configurations, ensuring zero downtime for refinery safety systems or continuous process operations.
Certified for SIL 2 applications per IEC 61508, the Emerson FOXBORO P0922YU FPS400-24 incorporates reinforced 3000VAC isolation and advanced surge protection (6kV/10kA). The unit operates across -40°C to +85°C ambient without derating, utilizing dual-ball bearing fans with speed modulation for optimal thermal management. Integrated PMBus 1.3 telemetry provides real-time monitoring of 20+ parameters (load imbalance, efficiency, temperature) through Emerson’s AMS Suite, enabling predictive maintenance for mission-critical power infrastructure.
FOXBORO P0922YU FPS400-24
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | P0922YU FPS400-24 |
| Manufacturer | Emerson (FOXBORO) |
| Product Type | Modular Redundant Power Supply |
| Output Rating | 24VDC ±0.5%, 400W (16.7A) |
| Input Voltage | 85–305VAC / 120–430VDC (dual inputs) |
| Power Factor | >0.99 |
| Efficiency | 94% (typical at 50% load) |
| Ripple Noise | <100mVpp> |
| Isolation | 3000VAC input-output, 500VAC output-chassis |
| Protections | OVP/OCP/OTP/Short-circuit/Inrush limit |
| Redundancy | Active current sharing (N+1 to N+5) |
| Operating Temp | -40°C to +85°C |
| Cooling | Dual fans (speed-controlled) |
| MTBF | 350,000 hrs @ 40°C |
| Compliance | UL 61010-1, IEC 61508 SIL 2, EN 50121-4 |
| Interface | PMBus 1.3, Alarm relay contacts |
Main Features and Advantages
Mission-Critical Redundancy: Active load balancing supports up to five parallel units with<2>Extreme Environment Operation: Cold-start capability at -40°C with 80% load. Dual fans with IP20 filtration maintain airflow during dust exposure. Corrosion-resistant coating withstands H₂S environments.
Intelligent Power Management: PMBus logs 1,000+ operational hours for predictive analytics. Efficiency optimization algorithm reduces losses at partial loads. Phase-loss detection on AC inputs triggers automatic failover.
Simplified Integration: Tool-less DIN-rail mounting (TS35/15) with push-in terminals. Auto-synchronization eliminates configuration conflicts in redundant arrays. Backward-compatible with FPS300 series chassis.
Application Field
The Emerson FOXBORO P0922YU FPS400-24 powers high-availability systems across hazardous industries. In offshore platforms, it energizes subsea control pods and fire/gas detection networks. Petrochemical complexes deploy it for ethylene cracker furnace controls and SIL 3-certified burner management systems. Power plants rely on its grid-immunity for turbine digital electrohydraulic (DEH) controls and excitation systems.
Water treatment facilities utilize the P0922YU FPS400-24 for large-scale SCADA RTU networks and ozone generator controls. Pharmaceutical manufacturers depend on its clean power for isolator barrier systems and freeze-dryer instrumentation. The module’s EN 50121 railway certification supports signaling systems in underground transit networks.
FOXBORO P0922YU FPS400-24
Related Products
FPS300-24: 300W predecessor with narrower temp range (-25°C to +70°C)
IPM2-P0904HA: 90W SIL 2 power supply for distributed cabinets
FPM1000: Advanced power manager for multi-array systems
P0916PWOC: 160W convection-cooled DIN-rail supply
CPSU-1200: 1200W chassis-mount bulk power unit
FBM242: Thermocouple input module requiring clean 24VDC
PSS21H-2DO: SIL 3 digital output safety module
