Product Description
Product Parameters for P0973CA (FEM100 Fieldbus Expansion Module)
📘 Product Overview
| Field | Details |
|---|---|
| Manufacturer | Schneider Electric (Foxboro) |
| Part Number | P0973CA |
| Product Type | Fieldbus Expansion Module (FEM100) |
| Function | Provides four Expanded Fieldbuses to the Field Control Processor 270 (FCP270) to support up to 128 200 Series Fieldbus Modules (FBMs) |
| System Compatibility | Exclusively used with FCP270 (not compatible with FCP280 or other control processors) |
| Associated PSS Document | PSS 31H-2FEM100 (FEM100 Fieldbus Expansion Module) |
⚙️ Functional Specifications
| Feature | Specification |
|---|---|
| Purpose | Extends FCP270 capacity by providing four Expanded Fieldbuses, each supporting up to 32 200 Series FBMs (128 FBMs total for typical control usage) |
| Fieldbus Communication | 2 Mbps HDLC Module Fieldbus (redundant A and B buses) for communication between FCP270 and 200 Series FBMs |
| Transmission Rate | 2 Mbps for 200 Series DIN FBMs |
| Process I/O Capacity | - 32 FBMs maximum per Expanded Fieldbus (4 buses per FEM100 pair) - Up to 128 FBMs total (depends on FCP270 sizing constraints; refer to B0700AW) |
| Cable Length | - Without FCM2Fs: 60 m (198 ft) maximum for FCP270 Fieldbus and Expanded Fieldbuses 1–4 - With FCM2Fs: 60 m (198 ft) maximum for non-fiber optic cabling |
| Fiber Optic Extension | Supports FCM2F2/FCM2F4/FCM2F10 Fieldbus Communications Modules for baseplate-to-baseplate extension: - FCM2F2: Up to 2 km (1.24 mi, multimode fiber) - FCM2F4: Up to 4 km (2.48 mi, multimode fiber) - FCM2F10: Up to 10 km (6.2 mi, single-mode fiber) |
| Supported Devices | - All 200 Series FBMs (e.g., FBM201, FBM202) - Fieldbus Communications Modules (FCM2F2/FCM2F4/FCM2F10) - Field Device Systems Integrator (FDSI) modules - Foxboro Evo Fieldbus Modules for Siemens APACS+ and Westinghouse WPDF systems |
| Redundancy | - Supports redundant FEM100 pair for high availability - FCP270 communicates over both A and B buses; switches to available bus on module failure - Module replacement does not interrupt communication on the other module |
| Software Requirements | 200 Series FBMs require VA Series software v8.3–v8.8 or Foxboro Evo Control Core Services v9.0+ IOM files for Expanded Fieldbus support |
📏 Physical Specifications
| Feature | Specification |
|---|---|
| Mounting | Mounts on DIN rail-mounted Two-Slot (P0973CG) or Four-Slot (P0973CN) Expansion Baseplate (vertical orientation only) |
| Dimensions | - Height: 99 mm (3.9 in); 114 mm (4.5 in) including mounting lugs - Width: 44.6 mm (1.75 in) - Depth: 105 mm (4.12 in) |
| Weight | 0.6 kg (1.3 lb) per module (approximate) |
| Construction | Rugged extruded aluminum exterior; supports enclosures for harsh environments (Class G3, ISA S71.04) |
| LED Indicators | - Operational status (power, watchdog timer) - HDLC transmit/receive for FCP270 - HDLC transmit/receive for Expanded Fieldbuses 1–4 |
| Baseplate Compatibility | - Two-Slot Baseplate (P0973CG): Supports FEM100 modules only; used for upgrading existing FCP270 installations - Four-Slot Baseplate (P0973CN): Supports two FCP270s, fiber optic splitter/combiners, and two FEM100s; used for new installations |
🌡️ Environmental Specifications
| Parameter | Specification |
|---|---|
| Operating Temperature | -20°C to +70°C (-4°F to +158°F) |
| Storage Temperature | -40°C to +85°C (-40°F to +185°F) |
| Relative Humidity | 5% to 95% (non-condensing) (operating and storage) |
| Altitude | - Operating: -300 to +3,000 m (-1,000 to +10,000 ft) - Storage: -300 to +12,000 m (-1,000 to +40,000 ft) |
| Contamination | Class G3 (Harsh) per ISA Standard S71.04 (tested per EIA Standard 364-65, Class III) |
| Vibration | 0.75 g from 5 to 500 Hz |
✅ Regulatory Compliance
| Certification Type | Details |
|---|---|
| Electromagnetic Compatibility (EMC) | - European EMC Directive 2004/108/EC - Meets EN61326-1:2013 Class A Emissions and Industrial Immunity Levels |
| RoHS Compliance | Complies with European Recast RoHS Directive 2011/65/EU |
| Product Safety | - UL/UL-C listed for Class 1, Groups A–D, Division 2, temperature code T5 enclosure-based systems - UL/UL-C listed for supplying communication circuits for Class 1, Groups A–D hazardous locations (per B0400FA) - Meets Class 2 requirements per National Electrical Code (NFPA No. 70) and Canadian Electrical Code (CSA C22.1) - European Low Voltage Directive 2006/95/EC - ATEX Directive 94/9/EC: DEMKO certified as Ex nA IIC T4 for Zone 2, Group IIC (per B0400FA) |
| Marine Certification | ABS Type Approved and Bureau Veritas Marine Certification for Environmental Category EC31 |
🔧 Additional Features
| Feature | Details |
|---|---|
| Installation | - Mounts on Two-Slot (P0973CG) or Four-Slot (P0973CN) Expansion Baseplate - Hot-swappable (can be removed/replaced without powering down) - Requires vertical DIN rail mounting |
| Power Requirements | - Input Voltage: 21 to 26 V DC - Consumption: 2.2 W (maximum) |
| Calibration | No calibration required |
| Baseplate Connectivity | - Two-Slot Baseplate: Includes redundant I/O cable connection to FCP270s (one connector for A and B buses, or both with Fieldbus Splitter/Terminator RH926KW) - Four-Slot Baseplate: Supports two FCP270s and two FEM100s with fiber optic splitter/combiners |
| Fieldbus Extension | Supports redundant FCM2F2/FCM2F4/FCM2F10 modules for fiber optic extension (up to 2 km, 4 km, or 10 km) to distribute FBMs locally or remotely |
📦 Ordering Information
| Field | Details |
|---|---|
| Part Number | P0973CA |
| Related Components | - Two-Slot Expansion Baseplate: P0973CG - Four-Slot Expansion Baseplate: P0973CN - Fieldbus Splitter/Terminator: RH926KW (supersedes P0926KW) - Fieldbus Communications Modules: FCM2F2, FCM2F4, FCM2F10 - Compatible Processor: FCP270 |
| Related PSS Documents | - PSS 21H-1B9: Field Control Processor 270 (FCP270) - PSS 31H-2SOV: Standard 200 Series Subsystem Overview - PSS 31H-2SBASPLT: Standard 200 Series Baseplates - PSS 31H-2FCM: Fieldbus Communications Module, FCM2F2/FCM2F4/FCM2F10 |