Description

The FOXBORO P0916BX is a 35-ampere,24V DC redundant power supply module designed for high-density smart I/O applications within the FOXBORO I/A Series Distributed Control System(DCS).Positioned between the 30A P0911QB-C and the 45A P0914XA/P0928AY families,the P0916BX delivers an optimal balance of power capacity,signal stability,and physical footprint,making it ideal for cabinets densely populated with FBM207(16-channel AI),FBM223(HART AO),FBM242(RTD),and other advanced I/O modules.

With an exceptionally low output ripple of<9 mV peak-to-peak,the P0916BX ensures clean power delivery essential for:

Stable HART communication over 4–20mA loops

Accurate analog measurement in noise-sensitive environments

Reliable operation of digital valve positioners and smart transmitters

The module supports N+1 redundancy,features hot-swappable installation,and includes comprehensive protection against overloads,short circuits,thermal events,and input surges.It accepts universal AC input(85–264V,47–63 Hz)and complies with global industrial safety standards(CE,FM Class I Div 2,ATEX Zone 2,IECEx).

Though now discontinued by Schneider Electric(which acquired FOXBORO),the P0916BX remains widely deployed in oil&gas,chemical processing,water treatment,and power generation—and is considered a strategic spare for lifecycle extension programs.

Application Scenarios

At a U.S.Gulf Coast chemical plant,a reactor temperature control cabinet housed 12 FBM207 cards and 2 FBM223 cards,drawing approximately 33A during simultaneous loop calibration.Previous use of 30A PSUs caused intermittent“DC Undervoltage”alarms and HART timeouts.After upgrading to dual FOXBORO P0916BX modules in redundant mode,the 24V rail stabilized at 24.02V±0.4%,even under full transient load.Digital diagnostics became fully reliable,enabling remote valve signature analysis and reducing field technician dispatches by 35%annually.The P0916BX thus delivered not just power—but operational intelligence and cost savings.

Parameter

Main Parameters Value/Description

Product Model FOXBORO P0916BX

Manufacturer FOXBORO/Schneider Electric

Product Category High-Capacity Redundant DC Power Supply Module

Output Voltage 24 V DC±2%(non-adjustable)

Output Current 35 A continuous per module

Input Voltage 85–264 V AC,47–63 Hz(universal single-phase,auto-ranging)

Redundancy Mode Supports N+1 redundancy(diode-OR or active current sharing,depending on I/O cage)

Output Ripple<9 mV peak-to-peak(at 35A,20 MHz bandwidth)—optimized for HART&precision analog inputs

Protection Features Overcurrent foldback,short-circuit shutdown,thermal overload protection,input surge suppression(IEC 61000-4-5 Level 3)

Isolation Rating 3.0 kV AC input-to-output;reinforced insulation per IEC/EN 60950-1

Operating Temperature 0°C to+60°C(forced airflow recommended above 50°C or 30A load)

Mounting Slide-in module for I/A Series high-density I/O cage(hot-swappable with ESD-safe latch handle)

Status Indicators“AC OK”and“DC OK”LEDs on front panel

Technical Principles and Innovative Values

Optimized Capacity:The 35A rating fills a critical gap—supporting near-full I/O racks without requiring the larger footprint or cost of 45A units.

Signal Integrity Focus:Ultra-low ripple enables error-free digital communication,essential for modern asset management strategies.

Brownfield Flexibility:Allows legacy I/A sites to adopt smart instrumentation while deferring full system migration.

Global Deployment Ready:Integrated certifications reduce engineering time for multinational projects.

Related Product Combination Solutions

FOXBORO FBM207:16-channel analog input—up to 14 cards per rack(~33A total)

FOXBORO FBM223:HART analog output—for digital valve diagnostics and calibration

FOXBORO FBM242:RTD input—requires stable excitation and low-noise power

FOXBORO CP60/CP70:Field Control Processors commonly used with P0916BX-powered cages

FOXBORO P0916BW/P0916BY:Earlier/later variants—often cross-compatible but verify firmware

Schneider Electric P0916BZ:Rare successor with minor updates(limited availability)

MTL5077/Pepperl+Fuchs FBC-4:Used downstream for intrinsically safe Fieldbus segments

Installation,Maintenance,and Lifecycle Support

Installation Best Practices:

Use 10 AWG stranded copper for AC input wiring

Ensure protective earth(PE)impedance<0.1Ω

Confirm both“AC OK”and“DC OK”LEDs illuminate after insertion

Deploy in redundant pairs for critical process areas

Maintenance Recommendations:

Inspect electrolytic capacitors annually for bulging or leakage

Clean ventilation slots every 6 months in harsh environments

Monitor DCS power diagnostics for voltage drift or redundancy imbalance

⚠️Critical Note:The FOXBORO P0916BX is discontinued and no longer manufactured.Due to its role in high-load smart I/O systems,unexpected failure can disrupt multiple control loops and diagnostic streams.Strategic spares are strongly advised for plants operating beyond 2025.

We supply fully tested,burn-in validated FOXBORO P0916BX units with:

Load test at 35A(24.0V±1.5%)

Ripple measurement confirmed<9 mVpp

Functional redundancy simulation(where applicable)

12-month warranty and global technical support

Each unit undergoes visual inspection,capacitor health screening,cleaning,and traceable labeling.

Contact us today to secure your FOXBORO P0916BX inventory—because in modern process automation,clean,reliable power is the invisible foundation of data-driven operations.Don’t let a single obsolete module jeopardize your digital continuity.

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