I/A Series Industrial Power Module | Foxboro P0926AH P0926AH-B
Manufacturer: Foxboro
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Part Number: P0926AH
Condition：New with Original Package
Product Type: Power Supply Modules
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Foxboro P0926AH I/A Series Industrial Power Module
The Foxboro P0926AH, also cataloged as the P0926AH Industrial Power Module, operates as a dedicated hardware component for high-efficiency DC voltage regulation and power distribution within Foxboro I/A Series and Evo DCS platforms. Utilizing digital high-frequency switching technology up to 30 kHz, the assembly converts standard 85-264 V AC line utility into regulated DC power channels for baseplate-mounted Fieldbus Modules (FBMs) and system control processors. Integrated fault-tolerant architecture enables dual-module redundant power sharing across active backplane power rails.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | P0926AH (P0926AH-B) |
| Brand | Foxboro |
| Origin | USA |
| Weight | 0.091 kg (0.2 lbs) |
| Dimensions | Standard Single-Width FBM Power Module Form Factor |
| Operating Temp | 0 deg C to +60 deg C |
| Storage Temp | -40 deg C to +85 deg C |
| Power Consumption | Self-contained digital power conversion unit |
| Product Type | Power Supply Modules |
| Input Voltage Range | 85-264 V AC (220 V AC nominal) |
| Switching Frequency | Up to 30 kHz |
| Protection Features | Over-voltage, over-current, short-circuit, thermal shutdown |
| System Compatibility | Foxboro I/A Series / Evo DCS |
| Compliance | IEC standards, CE certified |
Channel Isolation and Loop Power Integrity
The Foxboro P0926AH module incorporates galvanically isolated switching circuitry to prevent high-voltage AC utility transients from leaking into low-voltage DC system backplane buses. This primary-to-secondary isolation preserves signal integrity across sensitive 4-20 mA HART loop protocol field channels by mitigating common-mode ground loops. High-frequency filtering suppression reduces power rail ripple, ensuring clean voltage reference delivery to thermocouple input modules requiring precise cold junction compensation (CJC) processing.
Frequently Asked Questions
Q: Does the P0926AH module support hot-swapping during active system operation?
A: Yes, in a redundant backplane configuration, an operator can remove or replace a faulted P0926AH power module without de-energizing the baseplate or interrupting controller operation.
Q: How does the P0926AH handle internal thermal overload conditions?
A: The module includes thermal monitoring circuits that trigger automatic shutoff if internal temperatures exceed safe operating parameters, automatically resetting once normal thermal limits resume.
Q: What input AC line voltage range can the P0926AH accept?
A: The module accepts a wide AC input range from 85 V AC to 264 V AC at 50/60 Hz, accommodating standard 110 V AC and 220 V AC utility feeds without manual jumper configuration.
Field Installation Guidelines
Mount the P0926AH module into its designated baseplate power slot by aligning the rear connector housing with the backplane guide rails. Slide the unit firmly inward until the power pins fully engage the backplane receptacle. Tighten the top and bottom captive mounting screws to establish physical ground continuity with the enclosure rack frame.
Maintain minimum cabinet clearance surrounding the power module chassis to allow natural convection airflow across heat dissipation vents. Ensure all AC main supply wiring connects through dedicated fuse terminals with proper wire strain relief. Verify that the system ground bus bar maintains a low-impedance connection to earth ground before applying 85-264 V AC power to the terminal block.