Overview
Configured for Expanded Fieldbus communication in the Foxboro I/A Series control system, the Foxboro P0973CA (FEM100 Fieldbus Expansion Module) provides direct physical network expansion between the Field Control Processor 270 (FCP270) and 200 Series Fieldbus Modules (FBMs).
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | P0973CA |
| Brand | Foxboro (by Schneider Electric) |
| Origin | United States |
| Product Type | Fieldbus Expansion Modules |
| Function | Fieldbus expansion interface for FCP270 |
| Supported System | Foxboro I/A Series Field Control Processor 270 (FCP270) |
| Fieldbus Expansion | 4 Expanded Fieldbuses |
| Module Capacity | Up to 32 x 200 Series FBMs per Expanded Fieldbus |
| Transmission Rate | 2 Mbps for 200 Series DIN FBMs |
| Input Voltage Range | 21 to 26 VDC |
| Power Consumption | 2.2 W maximum |
| Operating Temp | -20 to +70 deg C |
| Operating Relative Humidity | 5 to 95% RH, noncondensing |
| Operating Altitude | -300 to +3,000 m |
| Mounting Type | Two-Slot (P0973CG) or Four-Slot (P0973CN) Expansion Baseplate |
| Installation Method | Vertical DIN rail mounting |
| Dimensions | 11.4 cm x 4.46 cm x 10.5 cm |
FOUNDATION Fieldbus and DCS Communication Interface
The FEM100 module expands the FCP270 communication capacity by providing four independent Expanded Fieldbus connections. Each fieldbus segment supports up to thirty-two 200 Series Fieldbus Modules, allowing distributed I/O extension through the Foxboro I/A Series architecture.
Moreover, the module transfers fieldbus data at 2 Mbps for compatible 200 Series DIN FBMs. The 21 to 26 VDC input range supports direct system power integration, while the 2.2 W maximum consumption defines the required power budget for expansion baseplate installation.
For process instrumentation networks, the FEM100 supports Fieldbus communication structures commonly associated with Foxboro DCS systems. In addition, the module design maintains electrical separation between field communication interfaces and the control processor expansion environment.
Frequently Asked Questions
Q: How many Fieldbus segments can one FEM100 module support?
A: The FEM100 provides four Expanded Fieldbus connections for FCP270 system expansion.
Q: What type of Fieldbus modules can connect to the FEM100?
A: The module supports 200 Series Fieldbus Modules (FBMs), including DIN-mounted FBM configurations.
Q: What mounting baseplates are compatible with the P0973CA?
A: The P0973CA mounts on Foxboro P0973CG Two-Slot or P0973CN Four-Slot Expansion Baseplates installed on a vertical DIN rail.
Field Installation Guidelines
Install the FEM100 module on the specified Foxboro expansion baseplate before connecting fieldbus wiring. Verify that the baseplate is correctly secured on the DIN rail and that the module seating mechanism fully engages.
Route fieldbus cables separately from high-voltage power wiring to reduce electromagnetic interference. Use proper cable shielding and connect shields according to the site grounding standard.
Confirm that the 21 to 26 VDC supply remains within the specified input range before energizing the module. Check fieldbus addressing, processor communication status, and FBM recognition through the Foxboro control configuration tools after installation.
Avoid installing the module in locations with excessive vibration, conductive contaminants, or moisture beyond the specified environmental limits.
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