Product Core Brief
- Model: FCP270 P0917YZ
- Brand: FOXBORO (Schneider Electric EcoStruxure Foxboro)
- Series: I/A Series & Foxboro Evo DCS Field Control Processor family
- Core Function: Execute continuous regulation, sequence logic, alarm management and FBM I/O data aggregation for distributed process control
- Product Type: DIN rail rack-mount hot-swappable real-time DCS controller CPU
- Key Specs: 100 MHz Elan 520 core | Dual redundant fieldbus | 32 max native 200-series FBM | ⚠️ EOL — limited stock remaining, Condition: New Surplus Original
Product Introduction
FOXBORO is a field control processor built to run closed-loop regulatory and discrete logic for I/A Series and Foxboro Evo DCS plant control cabinets. It connects all FBM I/O modules and exchanges process data over redundant fiber Ethernet to operator workstations.This unit differs from the upgraded FCP280 by using a 100 MHz AMD Elan core, with OEM-measured MTBF of 275,000 hours at 40 °C cabinet ambient. Dual independent 2 Mbps fieldbus paths eliminate single-point I/O communication failure without external bus repeaters.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Main Processing Core | AMD Elan 520 32-bit microprocessor, 100 MHz clock speed |
| Aux Comm ASIC | CommControl™ 80186 sub-processor for FBM fieldbus traffic offload |
| Memory Allocation | 16 MB SDRAM runtime memory, 32 MB non-volatile flash storage |
| Native FBM Capacity | 32 x 200-series FBM without FEM100 expansion module |
| Expanded FBM Capacity | 128 x 200-series FBM when paired with one FEM100 fieldbus expander |
| 100-Series FBM Support | Up to 64 legacy 100-series I/O modules via FBI100 bus extenders |
| Fieldbus Interface | Dual redundant A/B HDLC bus, selectable 2 Mbps / 268 kbps baud rate |
| Control Network Port | Dual 100 Mbps fiber-optic Ethernet for Foxboro Evo MESH control network |
| Supply Voltage | 24 V DC ±5 %, max power draw 11 W per single controller unit |
| Redundancy Mode | Master-Tracker paired dual-controller bumpless failover architecture |
| Diagnostic Hardware | Front-panel LED array for Op Status, Fieldbus A/B Tx/Rx, IR comm, fault watchdog |
| Operating Temperature Range | -20 °C to +70 °C operational; -40 °C to +85 °C storage |
| Environmental Rating | ISA S71.04 G3 full conformal PCB coating for corrosive industrial atmospheres |
| Hazardous Certifications | FM Class I Div.2, ATEX Ex ec IIC Gc (cabinet-only enclosure mounting) |
| Physical Housing | Die-cast aluminum heat sink enclosure, keyed DIN rail baseplate slot |
| Mount Standard | 35 mm standard DIN rail dedicated controller rack slots |
Quality Control Process (Engineer’s Perspective)
- Incoming Verification: Cross-reference serial numbers to OEM production batch logs; inspect aluminum heat sink fins, fiber port dust caps, and gold backplane connectors for scratches or oxidation. Reject units with cracked PCB conformal coating.
- Live Functional Test: Seat the unit on a certified controller DIN baseplate, connect a bank of FBM201 analog and FBM242 discrete I/O modules, run a 26-hour continuous full logic load cycle. Log core temperature and confirm redundant fiber Ethernet handshake to an I/A workstation node.
- Electrical Parameter Test: Use a 500 V Megger to test fieldbus-to-Ethernet port insulation resistance (minimum pass threshold 10 MΩ); verify chassis ground continuity to DIN rail mounting lugs.
- Firmware Verification: Read embedded controller firmware revision via I/A engineering workstation; photograph front LED diagnostic layout and factory bus baud rate jumper default positions for post-delivery reference.
- Final QC & Packaging: Purge PCB and heat sink internal surfaces with dry nitrogen to remove industrial particulate buildup; seal the controller in anti-static vacuum bag, apply QC Passed sticker stamped with full test completion date.
Replacement Pitfall Guide
❗ Firmware Mismatch: Newer Foxboro Evo workstation software builds cannot load legacy control logic compiled on older firmware versions of the module. Confirm workstation software rev before ordering spare controllers — site DCS upgrade schedules often lag spare component stock.❗ DIP Switch / Jumper Misconfiguration: Factory default jumpers set fieldbus speed to 2 Mbps for 200-series FBMs. The second rear header controls dual Ethernet A/B network redundancy; misalignment disables automatic network failover during fiber cable breaks.❗ Terminal / Cable Incompatibility: Low-cost unshielded fiber patch cords introduce signal attenuation in high-MCC noise zones. Deploy OEM matched single-mode fiber jumpers with metal shielded bulkhead connectors only.❗ Power Supply Mismatch: Calculate total rack DC draw with 20% headroom. Two of these redundant paired controllers pull 22 W combined; undersized rack power supplies trigger core thermal throttling under full FBM I/O polling load.❗ ESD Damage: Always deploy an anti-static mat in low-humidity winter cabinet environments. Static discharge to exposed gold backplane connectors destroys the CommControl ASIC with no visible exterior damage to the aluminum housing.Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
Compatibility Matrix
- FBM201 RH914SQ AI Module → : Direct compatible — no bus reconfiguration required
- FBM233 P0926GX Redundant Gateway → : Direct compatible — supports master-tracker gateway pairing logic
- FCP280 High-Speed Controller → : Needs Adaptation — control logic scan timing and firmware must be recompiled in workstation
- DeltaV M-Series Controller Base → : Incompatible — proprietary dual 2 Mbps I/A fieldbus pinout mismatch
- Experion PKS DCS Rack → : Incompatible — no native Foxboro fiber MESH network bridge support
- RH916TA FBM242 Discrete Output → : Direct compatible — supports multi-voltage discrete interlock sequencing blocks
Benchmarks
- Control logic scan cycle: 120 ms (simulated full load, 32 mixed analog/discrete FBM I/O modules)
- Comms throughput: 100 Mbps (redundant fiber MESH control network full-duplex mode)
- Master-Tracker controller failover latency: < 18 ms automatic bumpless switchover between paired units
