Description
Product Core Brief
- Model: FPS400-24
- Brand: FOXBORO
- Series: I/A Series / 200 Series FBM
- Core Function: Converts AC/DC input to regulated 24VDC for FBM backplanes and field devices.
- Product Type: DIN Rail Power Supply Module
- Key Specs: 400W, 24VDC Output, 16.7A, G3 Rating
- Condition: New Original (New Surplus)
Key Technical Specifications
| Parameter | Value |
|---|---|
| Module Type | 24VDC Power Supply |
| Output Power | 400 W |
| Output Voltage | 24.0 VDC (±0.2 V) |
| Rated Output Current | 16.7 A |
| Input Options | 85-265 VAC or 108-145 VDC (P0922YU) / 18-35 VDC (P0922YC) |
| Efficiency | Up to 95% (AC Input) |
| Mounting | DIN Rail or Wall |
| Environmental Rating | G3 Level (Harsh Environment) |
| Protection | Over-voltage, Double Current Limit |
| System Compatibility | FOXBORO 200 Series FBM / I/A Series |
FOXBORO FPS400-24
Product Introduction
Stable backplane power is the foundation of reliable I/O operation in the 200 Series architecture. The is a 400W power supply module designed to deliver regulated 24VDC to FBM baseplates and external field devices. It features a wide-range input that accepts 85-265 VAC or 108-145 VDC (P0922YU variant), making it adaptable to various plant power distributions without external transformers.
This unit is the only power supply tested and qualified by Foxboro for use with 200 Series FBMs. Field engineers specify the because its G3 environmental rating and convection-cooled design ensure long-term reliability in harsh cabinet conditions without the failure risk associated with internal fans.
Key Selling Points & Differentiators
- Certified 200 Series Compatibility: The only power supply officially tested and qualified for 200 Series FBMs; not recommended for non-Foxboro backplanes due to specific inrush and regulation requirements.
- High-Efficiency Conversion: Achieves up to 95% efficiency with active power factor correction, reducing cabinet heat load and operating costs.
- Robust Protection Circuitry: Features double current limiting and over-voltage shutdown to protect downstream FBMs and field wiring from catastrophic faults.
- Rigorous Live Bench Testing: Every unit undergoes a 24-hour continuous load test with voltage ripple measurement and thermal monitoring before shipping.
- New Surplus Availability: Factory-sealed condition with verified source traceability, bypassing typical OEM lead times for discontinued I/A Series hardware.
- Anti-Counterfeit Verification: Serial numbers are checked against manufacturer databases during incoming inspection to guarantee authenticity.
FOXBORO FPS400-24
FAQ
What is the difference between P0922YU and P0922YC?
The P0922YU variant accepts 85-265 VAC or 108-145 VDC input, while the P0922YC accepts 18-35 VDC input. Always verify your cabinet’s primary power source before ordering. Installing an AC-input unit on a DC bus (or vice versa) will result in immediate failure or no output.
While the is capable of powering external field devices, Foxboro explicitly states that for system integrity, the FBM backplane and external field devices should not be powered by the same unit. Use separate power supplies to prevent field-side faults from collapsing backplane voltage.
Do I need to configure anything in the control strategy?
No. This is a purely analog power module with no firmware or communication interface. However, you should verify the output voltage with a multimeter before connecting the FBM backplane. I always recommend checking the 24V rail against the 200 Series specification sheet before energizing the modules.
What happens if I exceed the 400W rating?
The module features double current limiting and will typically enter a hiccup mode or shut down to protect itself. Continuous overload will trigger the relay status alarm output. Always calculate your total FBM and field device load with a 20% safety margin before sizing.
Is there a warranty on this new surplus unit?
Yes. All new surplus modules come with a standard 12-month functional warranty. If the unit fails during normal operation within that period, we provide a direct replacement. We also include our internal test report with every shipment so you can verify the 24-hour load test and voltage regulation results before installation.
