FOXBORO P0904HA

Description

Product Description

Product Parameters

• Brand/Model: FOXBORO P0904HA
• Core Power Supply Parameters
  • Input Voltage:
    • AC: 85-264V AC (50/60Hz, single-phase)
    • DC: 120-375V DC (optional)
  • Output Voltage: 24V DC (regulated, ±1% accuracy)
  • Output Current: 10A continuous (240W power rating)
  • Efficiency: > 90% (full load)
  • Ripple & Noise: < 50mV p-p (24V output)
• Redundancy & Protection Parameters
  • Redundancy Support: 1+1 redundant configuration (automatic load sharing, < 5ms failover)
  • Protection Features: Overvoltage protection (28V DC cutoff), overcurrent protection (12A cutoff), short-circuit protection, thermal shutdown
  • Diagnostic Outputs: Digital status signals (OK/FAULT), LED indicators (Power/OK/Fault), remote monitoring via DCS
• Environmental & Physical Parameters
  • Operating Temperature: 0°C ~ +55°C
  • Storage Temperature: -25°C ~ +70°C
  • Vibration Resistance: 5g (10-2000Hz, IEC 60068-2-6)
  • Shock Resistance: 30g (11ms half-sine wave, IEC 60068-2-27)
  • Protection Grade: IP20 (rack-mount)
  • Dimensions: 48mm (W) × 175mm (H) × 300mm (D) (19-inch rack-compatible, 1U height)
  • Cooling: Forced-air cooling (internal fan, redundant fan option)

Advantages & Features

1. Dual-Input Flexibility: FOXBORO P0904HA supports both AC (85-264V) and DC (120-375V) input, enabling deployment in diverse industrial environments with varying power infrastructure (e.g., AC mains, DC backup systems).
2. 1+1 Redundant Capability: The module’s support for redundant configuration with automatic failover ensures uninterrupted power to critical DCS components, eliminating downtime risks from power supply failures.
3. Comprehensive Protection: Built-in overvoltage, overcurrent, short-circuit, and thermal protection safeguards both the power supply and connected DCS hardware from damage caused by electrical faults.
4. Advanced Diagnostics: Real-time status monitoring (LED indicators, digital signals) and remote DCS integration provide visibility into power supply health, enabling proactive maintenance and rapid fault resolution.

Application Fields & Cases

1. Oil Refinery DCS Power System: A major oil refinery deployed FOXBORO P0904HA modules in 1+1 redundant configurations to power Foxboro FCP280 controllers and FBM I/O modules across its crude distillation unit. The dual-input capability allowed integration with both AC mains and DC UPS systems, ensuring power continuity during grid outages.
2. Chemical Plant Safety System Power: A petrochemical facility used FOXBORO P0904HA to supply power to its SIL 3-certified emergency shutdown (ESD) system. Redundant configuration and overcurrent protection prevented power-related failures in the safety system, maintaining compliance with IEC 61508 standards.
3. Power Generation Turbine Control Power: A combined-cycle power plant integrated FOXBORO P0904HA modules into its turbine control DCS, leveraging the module’s high efficiency and thermal protection to operate reliably in the high-temperature environment of the turbine hall. Remote diagnostics enabled plant operators to monitor power supply health without on-site inspections.

Competitor Comparison

Selection Suggestions & Precautions

1. Selection Suggestions: FOXBORO P0904HA is ideal for Foxboro I/A Series DCS users needing a flexible, redundant power supply for critical control systems (e.g., refineries, chemical plants). For lower-power applications (< 120W), choose the FOXBORO P0904HB (5A output); for Emerson/Siemens systems, select their compatible power supply modules.
2. Precautions:
   • Deploy the module in 1+1 redundant configuration for mission-critical applications to eliminate single points of failure in power delivery.
   • Ensure input voltage matches the module’s specifications (AC 85-264V or DC 120-375V) to avoid damage—never connect AC and DC inputs simultaneously.
   • Use only Foxboro-certified cabling and connectors for output wiring to maintain voltage regulation and prevent short circuits.
   • Replace internal fans every 3 years (per Foxboro recommendations) to ensure adequate cooling and prevent thermal shutdown in high-temperature environments.
   • Monitor diagnostic signals via the DCS to detect early signs of failure (e.g., rising temperature, voltage ripple) and schedule preventive maintenance.

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