Foxboro FPS400-24 P0922YU
Foxboro FPS400-24 P0922YU - Image 2

Foxboro FPS400-24 P0922YU

Product Introduction: The Foxboro FPS400-24 is a 400 W DIN-rail mount power supply module designed for the Foxboro I/A Series DCS and associated control systems. It provides a stable 24 V DC output to power DIN-rail-mounted baseboards, 200-series Fieldbus Modules (FBMs), Fieldbus Communication Modules (FCMs), and Field Control Processors (FCPs). The P0922YU variant accepts 85–265 V AC or 108–145 V DC input (nominal 125 V DC) and features high efficiency, power factor correction, dual-stage current limiting, overvoltage shutdown, transformer-isolated output, and a relay (C-type) status alarm output. It is certified for hazardous locations (Class I, Div 2, Zone 2) and is rated for G3-class harsh environments. It can also serve as a field device power supply when used appropriately.

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Category: SKU: Foxboro FPS400-24 P0922YU

Description

Foxboro FPS400-24 P0922YU Technical Specifications:

  • Model: FPS400-24; P0922YU (AC/DC high-voltage input version)
  • Input Voltage Range: 85 V AC to 265 V AC (47–63 Hz) or 108 V DC to 145; nominal 125 V DC
  • Input Current: 5.6 A RMS (max) at 85 V AC; 2.5 A RMS (max) at 230 V AC
  • Output Voltage: 24.0 (0.2 nominal trim)
  • Output Power: 400 W at rated load
  • Efficiency: Up to 95% (P0922YU)
  • Protection: Dual-stage current limiting; overvoltage shutdown circuit; transformer-isolated output; short-circuit protection
  • Operating Temperature: –30 °C to +71 °C (depends on variant)
  • Humidity: 5% to 95% non-condensing
  • Enclosure Rating: G3-class; sealed enclosure suitable for harsh environments; IP65/IP66 variants available for specific applications
  • Output: Single 24 V DC output; variants provide multiple outputs
  • Alarm Output: Relay (C-type) status alarm output for monitoring power health
  • Mounting: DIN-rail or wall/panel mounting; supports horizontal or vertical orientation

Functional Features:

  • Wide input voltage range (AC/DC) accommodates global plant power
  • High efficiency reduces heat generation and operating costs
  • Power factor correction improves power quality
  • Dual-stage current limiting protects against overloads
  • Transformer isolation enhances safety and noise immunity
  • Relay alarm contact for remote status monitoring
  • Agency approvals: UL, UL-C, CENELEC, hazardous location certifications (e.g., Class I, Div 2, Zone 2)

Application Scenarios:

  • Primary power supply for Foxboro I/A Series 200-series FBMs, FCMs, FCPs in control cabinets
  • Power for external field devices in automation systems (with appropriate design separation)
  • DIN-rail power in automation panels, skids, and remote enclosures

Performance Parameters:

  • Stable 24 output even with varying input voltage
  • High efficiency (up to 95%) reduces energy waste and cooling requirements
  • Overvoltage/overcurrent protection ensures reliability under load faults

Material and Structural Characteristics:

  • Sealed enclosure designed to withstand dust, humidity, and corrosive atmospheres
  • DIN-rail clip facilitates secure mounting and removal
  • Robust internal components designed for long life under industrial conditions

Working Principle: The incoming AC/DC is filtered, rectified, and regulated by high-efficiency switching circuitry to produce a clean 24 V DC output. A transformer provides isolation between input and output for safety and noise immunity. Control circuits monitor output voltage and current; if overvoltage or overcurrent conditions occur, the protection circuits act to shut down or limit the output. The alarm relay changes state upon power fault. Installation Requirements:

  • Mount the FPS400-24 on a DIN rail in a control cabinet, allowing adequate ventilation
  • Connect input wiring (AC or DC) following line and neutral (if AC) and polarity (if DC) specifications; use recommended wire gauges
  • Connect the 24 output to the load distribution terminals
  • Connect the alarm relay contacts to the monitoring system as required
  • Verify that the total load current does not exceed the rated output current

Usage Notes:

  • To ensure system integrity, avoid powering both the baseboard and external field devices from the same FPS400-24 unless designed accordingly
  • Periodically check input voltage, output voltage, and alarm relay status
  • Confirm that the input source (AC or DC) matches the P0922YU input range; do not exceed 265 V AC or 145 V DC
  • Use only replacement units with identical part numbers and revisions

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