FEM100 P0973CA Foxboro Fieldbus Expansion Module, I/A Series FCP270 I/O Bus Expander for 200‑Series FBM Field Modules
FEM100 P0973CA Foxboro Fieldbus Expansion Module, I/A Series FCP270 I/O Bus Expander for 200‑Series FBM Field Modules - Image 2
FEM100 P0973CA Foxboro Fieldbus Expansion Module, I/A Series FCP270 I/O Bus Expander for 200‑Series FBM Field Modules - Image 3
FEM100 P0973CA Foxboro Fieldbus Expansion Module, I/A Series FCP270 I/O Bus Expander for 200‑Series FBM Field Modules - Image 4

FEM100 P0973CA Foxboro Fieldbus Expansion Module, I/A Series FCP270 I/O Bus Expander for 200‑Series FBM Field Modules

  1. FEM100 P0973CA – I/A Series Fieldbus Expansion Module (Target Model)
  2. FCP270 – Foxboro Field Control Processor
  3. FBM201 – 200‑series Analog Input DIN I/O module
  4. FBM202 – 200‑series Analog Output DIN I/O module
  5. A4H124‑24FX P0973JN – A4‑Series full fiber managed DCS switch
  6. H90QHQE013N0 – Foxboro I/A H90 operator workstation server
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Description

FEM100 P0973CA Foxboro Fieldbus Expansion Module, I/A Series FCP270 I/O Bus Expander for 200‑Series FBM Field Modules

 

Product Application

FEM100 P0973CA belongs to Foxboro I/A Series DCS hardware ecosystem. It works in coordination with FCP270 field control processor. The core function is to expand the controller’s fieldbus capacity, providing 4 independent high‑speed fieldbus channels. Each bus channel can support up to 32 units of 200‑series DIN‑rail FBM I/O modules. A pair of redundant FEM100 can carry a maximum of 128 FBM field modules. It is widely used in petrochemical, refining, chemical and thermal power plants for large‑scale distributed I/O expansion. Redundant A/B fieldbus communication ensures uninterrupted data transmission between FCP270 controller and field I/O modules.

FEM100 P0973CA

Product Specifications

  • Part Number: FEM100 / P0973CA
  • Manufacturer: Foxboro (Schneider Electric, Invensys legacy)
  • Product Type: Fieldbus Expansion Module
  • Compatible Controller: FCP270 Field Control Processor
  • Fieldbus Quantity: 4 independent expanded fieldbus channels
  • Max FBM per bus: 32 pcs of 200‑series DIN FBM
  • Communication Rate: 2 Mbps HDLC redundant A/B fieldbus
  • Power Supply: 21 ~ 26 VDC (nominal 24 VDC)
  • Max Power Consumption: 2.2 W
  • Mounting Baseplate: P0973CG (2‑slot) / P0973CN (4‑slot) expansion baseplate
  • Installation: Vertical DIN rail mounting via baseplate
  • Operating Temperature: -20 ℃ ~ +70 ℃
  • Humidity: 5% ~ 95% RH, non‑condensing
  • Operating Altitude: -300 m ~ +3000 m
  • Anti‑Corrosion: G3 corrosion resistant grade
  • Indicator LEDs: Operational status, IR active, Fieldbus A / B status, fault alarm
  • Certification: CE, UL, RoHS
  • Product Status: Spare replacement module for existing I/A Series FCP270 DCS projects
  • Approx. Weight: 0.3 kg

 

Core Technical Parameters

  • Redundant hot‑standby deployment: Dual FEM100 pair for bumpless fieldbus communication backup
  • Dual A/B bus wiring for each fieldbus channel to prevent single cable break failure
  • Hardware self‑diagnosis, bus fault and module failure alarm uploaded to DCS HMI
  • Hot‑swap capable: Module can be replaced online without shutting down FCP270 controller
  • Dedicated for 200‑series DIN‑mount FBM I/O modules, not compatible with old chassis‑type FBMs
  • Low power consumption design, suitable for dense DIN‑rail I/O cabinet layout

 

Recommended Matching Spare Parts & Accessories (8 Items)

  1. FCP270 Field Control Processor
  2. P0973CG 2‑slot expansion baseplate / P0973CN 4‑slot baseplate
  3. 200‑series DIN‑rail FBM I/O modules (FBM201, FBM202, FBM233 etc.)
  4. Redundant A/B fieldbus shielded cable
  5. DIN rail for baseplate installation
  6. IA‑Tools engineering configuration software
  7. 24VDC redundant power supply for I/O cabinet
  8. DCS UPS power distribution unit

 

Product Features

✅ Greatly increases I/O quantity capacity of single controller, each bus supports up to 32 FBM modules for large‑scale field signal collection & control output.

✅ Redundant A/B Dual Bus Architecture Each fieldbus adopts dual A/B communication lines. Communication automatically switches to backup bus when one line fails, avoids field I/O communication interruption.

✅ Redundant FEM100 Hot‑Standby Pair Dual modules run synchronously. If primary malfunctions, standby unit automatically takes over all 4 fieldbus channels without process disturbance.

✅ DIN‑Rail Compact Installation Installed on P0973CG / P0973CN baseplate, vertical DIN rail mounting, saves cabinet space for distributed I/O arrangement.

✅ Module Hot‑Swap Maintenance Faulty module can be pulled out and replaced online while and field I/O keep running, reduces plant downtime.

✅ Built‑in LED Status Indication Front panel LEDs clearly show module running status, A/B bus working condition and fault information for fast on‑site troubleshooting.

✅ Industrial Harsh Environment Adaptability Wide operating temperature range, G3 anti‑corrosion capability, suitable for chemical plant control cabinet environment.

FEM100 P0973CA

Installation Guidelines

  1. Mount P0973CG / P0973CN expansion baseplate onto vertical DIN rail inside I/O cabinet.
  2. Insert P0973CA module into target slot of baseplate and lock the fastening buckle.
  3. Wire 24VDC power supply to baseplate power terminal.
  4. Run redundant A/B shielded fieldbus cables from 4 bus channels to each FBM I/O module.
  5. Connect communication port to processor.
  6. Complete I/O configuration download to via IA‑Tools engineering software, assign FBM modules to corresponding fieldbus channels.
  7. Perform bus fault test: disconnect bus A line to verify automatic switchover to bus B without losing I/O signal.
  8. Test redundancy function: power off primary and confirm standby module takes over all fieldbus communication.

 

Maintenance Instructions

Daily Maintenance Check front panel LED indicators of . Verify fieldbus communication status on DCS HMI. Inspect 24VDC power supply stability.

Periodic Maintenance (Every 6–12 months) Clean dust of module surface. Check fieldbus cable terminal tightness. Backup controller I/O configuration. Inspect DIN rail and baseplate fastening condition.

Fault Maintenance

  • Module fault LED alarm: Replace hot‑swap spare module, confirm fieldbus communication recovers.
  • Single fieldbus channel loss: Inspect A/B bus cable and terminal connection of this channel.
  • Redundancy synchronization failure: Verify both primary & standby are powered normally and configuration consistent.
  • Do not disconnect fieldbus cable while critical process loop is running unless redundant bus is healthy.

Long‑Term Operation Tips Keep cabinet temperature within -20~+70℃. Always stock spare module for emergency replacement. Archive I/O configuration version backup.

 

Brand Same‑Series Models (6 Models)

  1. FEM100 P0973CA – I/A Series Fieldbus Expansion Module (Target Model)
  2. FCP270 – Foxboro Field Control Processor
  3. FBM201 – 200‑series Analog Input DIN I/O module
  4. FBM202 – 200‑series Analog Output DIN I/O module
  5. A4H124‑24FX P0973JN – A4‑Series full fiber managed DCS switch
  6. H90QHQE013N0 – Foxboro I/A H90 operator workstation server

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