FOXBORO P0926PA Ring Lug Termination Assembly (FTA) for FBM230 FBM231 Serial Communication Modules I A Series DCS
- Product Code: P0926PA
- Availability: In Stock
FOXBORO P0926PA Ring Lug Termination Assembly (FTA) for FBM230 / FBM231 Serial Communication Modules I/A Series DCS
Manufacturer Background: Foxboro (Schneider Electric I/A Series DCS); Passive field termination assembly (TA/FTA), ring lug screw wiring version, matched exclusively to FBM230 / FBM231 serial communication FBM cards; fully passive no power/signal conditioning circuits, EOL legacy spare part for power, petrochemical, offshore Zone2 control cabinets
Part Number Distinction:
- P0926PA: Ring lug screw terminal TA (crimp ring terminal wiring)
- P0926GH: Compression spring-clamp lug-free TA
- P0926GV: Base FBM230/FBM231 serial motherboard card
Product Type: DIN rail mounted passive termination assembly (FTA); pure wiring transition terminal block, no internal power, isolation or signal processing circuits; dedicated for RS232/RS422/RS485 multi-drop serial instrument wiring for FBM230/FBM231 4-port serial fieldbus modules
Matching Platform: Foxboro I/A Series DCS, FCP270/FCP280/ZCP270 field control processors, FBM230 (4-port single serial module) / FBM231 (4-port redundant serial module), standard 35mm DIN rail, dedicated Type5 shielded ribbon interconnection cable between FBM rear port and P0926PA TA
Core Hardware Overview:
1. Wiring Terminals: Ring lug screw compression terminals, wire range 0.5–4mm² (22AWG–12AWG), requires pre-crimped ring lugs for field cables
2. Serial Channel Layout: 4 fully independent isolated serial signal groups, one group per FBM serial port (RS232/RS422/RS485 configurable)
3. Interconnection Interface: Dedicated multi-pin shielded ribbon cable socket to mate rear connector of FBM230/FBM231
4. Built-in Circuitry: Passive terminal breakout only; all galvanic isolation, ESD protection, surge suppression located on FBM230/FBM231 motherboard
5. Mounting: Standard 35mm DIN rail horizontal/vertical dual installation
6. Housing: V0 flame-retardant PA plastic, IP20 cabinet protection rating
7. Weight & Dimension: W45mm × H102mm × D104mm; net weight ~363g per unit
8. Environmental: Standard operating temp 0℃ ~ +60℃; conformal coated ISA G3 anti-corrosion variant for offshore salt fog environments; humidity 5%~95% non-condensing
1. Product Overview
P0926PA is a ring lug type passive serial termination assembly (FTA) exclusively paired with Foxboro FBM230/FBM231 four-channel serial communication modules within I/A Series DCS. It acts as a wiring transition bridge between the FBM rear ribbon cable and field serial instruments, analyzers, modems, PLC sub-systems, and HART multi-drop devices.
Distinguished from spring-clamp P0926GH, P0926PA adopts screw ring-lug terminal design: field wires must be fitted with crimped ring terminals before fastening to screws, delivering superior anti-loosening performance under severe vibration typical of power plants, refineries and offshore platforms. Four fully separated terminal zones correspond one-to-one to the four independent serial ports of FBM230/FBM231, supporting isolated RS232 point-to-point, RS422 and RS485 multi-drop bus wiring.
The unit is fully passive with zero power consumption, no built-in signal conditioning or isolation hardware; all communication protection and galvanic isolation circuits reside on the FBM main card. A dedicated shielded flat ribbon cable connects the TA to the rear port of FBM230/FBM231, minimizing serial signal crosstalk and electromagnetic interference from large motors and VFD drives.
PCB conformal coated versions comply with ISA S71.04 Class G3 corrosive industrial standards for Zone2 hazardous offshore control cabinets. Foxboro ceased original mass production; all available stock consists of surplus unused or fully tested refurbished spare units for legacy DCS cabinet renovation and serial communication channel expansion projects.
