The Foxboro P0916BT, also cataloged as the P0916BT Termination Assembly, operates as a dedicated hardware component for field wiring distribution and signal conditioning within Foxboro I/A Series and Evo DCS platforms. The unit forms the direct physical termination interface for external 4-20 mA current loops routed to the secondary FBM211 analog input module.
| Parameter | Specification |
|---|---|
| Model | P0916BT |
| Brand | Foxboro (Schneider Electric) |
| Origin | USA |
| Weight | 0.61 lbs |
| Dimensions | Standard 200 Series assembly profile |
| Operating Temp | -40 to +70 deg C |
| Power Consumption | Max 8.5 W |
| Channel Capacity | 16 independent analog input channels |
| Signal Type | Standard 4-20 mA current loop |
| Wire Termination | Screw-clamp terminals (12-22 AWG) |
| Mounting | DIN rail with locking mechanism |
| Enclosure Rating | IP20 (cabinet installation required) |
| Memory | 16 MB SDRAM, 32 MB Flash (for local data handling) |
| Isolation | Channel-to-channel and channel-to-ground isolation |
The termination assembly utilizes channel-to-channel isolation parameters to isolate physical field sensor signals from the primary backplane processing logic, preventing common-mode noise propagation. The electrical architecture of the 16 independent channels accommodates the 4-20 mA HART loop protocol, allowing high-frequency digital communication signals to pass unimpeded to the FBM211 subsystem. Cold junction compensation (CJC) biasing circuits are embedded into the substrate layer to stabilize millivolt inputs when encountering thermal variations across the terminal blocks.
Q: Can the FBM211 module connected to this assembly be replaced while the system is under power?
A: Yes, the hot-swappable architecture allows connected Fieldbus Modules to be extracted or inserted without disconnecting the permanent field wiring terminated on the P0916BT block and without interrupting the operational state of the DCS.
Q: What are the cable distance constraints between the field transmitter and the termination assembly?
A: The physical layer supports maximum cable runs up to 1000 m (3280 ft), provided the interconnecting field cable meets standard gauge requirements (12-22 AWG) and incorporates continuous, single-ended shielding.
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