Description
Key Technical Specifications
| Parameter | Value |
| Brand | Foxboro (Schneider Electric) |
| Model Number | P0916DB |
| Series | Foxboro I/A Series |
| Module Type | Fieldbus Communication Module |
| Operating Voltage | 24 V DC nominal (18–30 V DC range) |
| Current Draw | 0.45 A at 24 V DC |
| Operating Temperature | 0°C to +60°C (32°F to 140°F) |
| Relative Humidity | 5% to 95% (non-condensing) |
| Mounting Configuration | Standard Foxboro I/A Series Baseplate Slot |
| Galvanic Isolation | 500 V DC channel-to-bus isolation |
| Status Indicators | LED indicators for Power, Bus Status, and TX/RX activity |
| Hazardous Location Ratings | CE, UL, CSA, ATEX Class I, Div 2 |
Product Introduction & Supply Chain Strategy
The Foxboro P0916DB Fieldbus Communication Module handles deterministic data exchange between field instrumentation and the I/A Series distributed control system (DCS) backplate. It manages fieldbus traffic across continuous processing lines in oil refineries, power stations, and chemical manufacturing plants.
Securing this unit as New Surplus reduces Total Cost of Ownership (TCO) while eliminating lead time variability during emergency outages. Maintaining unused factory-sealed units as buffer stock safeguards production against sudden OEM discontinuation, avoiding the high downtime risks associated with degraded refurbished alternatives.
Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety)
Perform a complete lock-out/tag-out (LOTO) procedure on the target rack power supply. Strap on an ESD-grounded wrist strap rated at 1 MΩ resistance before touching the module or backplane. Photograph and document all existing DIP switch settings, address jumpers, and field bus cable connections on the legacy card prior to removal.
Stage 2: Removal
Loosen the top and bottom captive retaining screws on the baseplate slot. Grasp the module ejector levers firmly and pull straight outward. Apply even pressure to disengage the rear connector pins cleanly without applying side torque that could bend pins on the baseplate interface.
Stage 3: Installation (Clone & Seat)
Verify that the hardware DIP switches on the new P0916DB match the documented positions from the original unit. Align the circuit board edges with the baseplate guide slots. Slide the module inward until the rear connectors touch the backplane, then press the ejector levers flush to lock the module in place. Tighten the captive retaining screws to 0.6 Nm torque.
Stage 4: Power-On & Testing
Measure the 24 V DC supply rail across the baseplate terminals with a calibrated digital multimeter before restoring main power. Turn on the rack power and observe the diagnostic LEDs. Verify that the power LED glows solid green and the communications status LED flashes regularly, confirming a proper signal handshake with the DCS controller.
- P0916DB
- P0916DB
Firmware/Software Versions & Upgrade Notes
- Recommended Version: Hardware revision P0916DB requires host I/A Series system software version 8.x or higher for full driver support and hardware telemetry.
- Backward Compatibility: Compatible with legacy I/A Series Node Bus baseplates, provided the baseplate hardware revision matches system bus baud rate configurations (up to 10 Mbps).
- Firmware Swap Risks: Changing firmware versions in the field without updating the control system database causes hardware mismatch alarms and bus communication loss. Always back up the controller configuration image before attempting a hardware revision swap.
Frequently Asked Questions (FAQ)
Is this Foxboro module genuinely new and unused?
Yes. This module is a Brand New Surplus unit obtained directly from verified industrial surplus channels. It is not used, not pulled from a decommissioned plant, and not refurbished. All backplane connectors show zero contact wear, and original anti-static protective packaging remains intact.
Why is New Surplus priced higher than refurbished modules on the secondary market?
Refurbished modules often carry hidden thermal stress and degraded electrolytic capacitors. Saving 500 on a used card risks 50,000 per hour in unplanned plant downtime when the component fails under load. Our New Surplus inventory offers original factory service life with zero operational risk.
Is the Foxboro still actively manufactured by the OEM?
The is a legacy I/A Series component facing restricted factory availability and extended lead times from the manufacturer. Sourcing New Surplus units provides immediate stock availability for critical last-time-buy strategies and long-term asset preservation.
Can I hot-swap the while the baseplate is energized?
Although the I/A Series architecture supports live insertion in specific redundant baseplate layouts, hot-swapping fieldbus communication cards carries risks of transient voltage spikes or bus interruption. We strongly advise powering down the slot or isolating the field bus segment prior to replacing hardware.
Does the module retain its node address and configuration after a power loss?
The module stores node addresses and network hardware profiles through physical DIP switches and onboard non-volatile memory. Settings persist indefinitely across power outages without requiring battery backup power.
What quality guarantees and testing procedures come with this unit?
Every unit undergoes a full quality check including power-on self-tests, backplane pin inspections, and signal handshake checks. The module comes backed by a 1-year functional replacement warranty and an inspector-signed QC test sheet.



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