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- Foxboro
- FBM242 P0916NG
- Compression Termination Assembly
- USA
- 216 × 80 × 125 mm
- 0.32 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Foxboro FBM242 P0916NG is an I/A Series compression termination assembly used to organize and terminate field wiring associated with compatible Foxboro I/O systems. It sits at the field-interface side of the control architecture, giving technicians a defined connection point between field cables and the corresponding I/O hardware.
In a process plant, a large number of field signals may enter an I/O cabinet from transmitters, switches, valves, and other instruments. A termination assembly such as the FBM242 provides the physical interface for these connections, making cabinet wiring easier to identify, service, and maintain without treating the termination assembly itself as an active signal-processing module.
The P0916NG reference is particularly relevant when replacing an existing termination assembly in an established I/A Series installation. The correct termination arrangement should be confirmed against the installed FBM configuration and field wiring before replacement, since the termination hardware must correspond to the associated I/O architecture.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | FBM242 |
| Part Number | P0916NG |
| Product Type | Compression Termination Assembly |
| Product Family | Foxboro I/A Series |
| System | I/A Series Control System |
| Component Category | I/O Termination Hardware |
| System Role | Field Wiring Termination |
| Interface Function | Field Signal Interconnection |
| Connection Method | Compression Termination |
| Application | I/A Series I/O Field Interface |
| Signal Path | Field Wiring to Associated I/O Hardware |
| Component Type | Passive Termination Assembly |
| Dimensions | 216 × 80 × 125 mm |
| Weight | 0.32 kg |
Product Features
- Compression termination assembly for compatible Foxboro I/A Series systems
- Provides a structured field-wiring interface for associated I/O hardware
- Supports organized connection of process instrumentation and field devices
- Passive interface component rather than an independent control or signal-processing module
- Suitable for cabinet installation in established Foxboro control architectures
- Helps simplify field wiring identification during commissioning and maintenance
- Supports replacement of existing termination hardware without redesigning the complete I/O arrangement
- Uses compression-style termination for the applicable field connections
- Suitable for service, refurbishment, and maintenance work on I/A Series installations
Working Principle
The FBM242 P0916NG serves as the physical termination point between incoming field wiring and the associated Foxboro I/O system. Field conductors are brought into the termination assembly, where the individual connections are organized and routed toward the corresponding I/O interface.
A simplified signal path is:
Field Instrument → Field Wiring → FBM242 P0916NG → Associated I/O Hardware → I/A Series Control System
For an input signal, the field device generates the process signal, which travels through the field wiring and termination assembly toward the I/O hardware for processing. For an output application, the signal path operates in the opposite direction, with the I/O system sending the control signal through the termination arrangement toward the field device.
The FBM242 itself does not execute control logic or independently process the field signal. Its practical value is in maintaining an orderly, serviceable physical connection between the plant wiring and the electronic I/O portion of the control system.
Role in an I/A Series I/O Control Architecture
The FBM242 P0916NG occupies the field-termination layer of the I/A Series architecture. It separates the physical field wiring interface from the electronic I/O hardware, allowing the cabinet wiring and I/O electronics to be managed as connected but distinct parts of the system.
| Control Architecture Layer | Typical Component | Function |
|---|---|---|
| Process Control | Foxboro Control System | Executes process control strategies |
| I/O Processing | Associated I/A Series I/O Module | Processes field input or output signals |
| Termination | FBM242 P0916NG | Provides the field wiring termination interface |
| Field Wiring | Multicore / Individual Field Cables | Carries signals between plant devices and cabinet |
| Field Devices | Transmitters / Switches / Actuators | Measures process conditions or receives control commands |
| Process Equipment | Pumps / Valves / Motors / Process Units | Performs the physical process operation |
| Engineering / HMI Layer | Operator and Engineering Systems | Supports configuration, monitoring, and maintenance |
Industrial Applications
| Application | Typical Use |
|---|---|
| Process Control Plants | Organizes field wiring connections within Foxboro I/A Series cabinets |
| Chemical Processing | Provides a structured interface between field instrumentation and I/O hardware |
| Oil and Gas Facilities | Supports field signal termination in established process-control installations |
| Power Generation | Maintains organized I/O cabinet wiring between plant devices and control hardware |
| Water and Wastewater | Supports field instrumentation connections in process-control systems |
| Manufacturing Plants | Provides termination infrastructure for compatible automation cabinets |
| System Maintenance | Replaces existing termination hardware during cabinet service or refurbishment |
Installation and Maintenance
- Confirm the part identification — Verify that FBM242 P0916NG matches the existing Foxboro I/A Series termination arrangement before installation.
- Review the cabinet documentation — Check the applicable wiring diagrams, I/O documentation, and termination assignments before disconnecting existing field wiring.
- Isolate the relevant equipment — Follow the plant’s approved electrical isolation and maintenance procedure before working on the termination assembly.
- Identify all field connections — Label or verify individual conductors so that each field circuit can be returned to its correct termination point.
- Inspect the assembly and connectors — Check accessible connection points, hardware, and insulation for contamination, corrosion, or physical damage.
- Remove the existing assembly carefully — Disconnect field wiring according to the approved procedure and avoid stressing adjacent cables or termination hardware.
- Inspect the mounting area — Make sure the cabinet mounting location is clean and free of loose hardware or debris before installing the replacement.
- Install the replacement assembly — Secure the FBM242 P0916NG in the designated position and maintain the original cabinet wiring arrangement.
- Reconnect field wiring — Restore the conductors to their documented termination points and check each connection for proper seating and mechanical security.
- Verify point-to-point wiring — Compare the completed termination against the applicable wiring drawings and I/O channel assignments before energizing the system.
- Perform a controlled signal check — Verify representative field inputs or outputs through the associated I/O hardware and confirm that the expected field points respond correctly.
- Record the maintenance work — Document the installed model, part number, wiring changes if any, and applicable I/O termination information for future service.
Related Components
| Component | Function |
|---|---|
| Foxboro I/A Series I/O Module | Processes the field signals associated with the termination arrangement |
| Foxboro I/A Series I/O Subsystem | Provides the broader interface between field devices and the control system |
| Field Wiring | Carries electrical signals between instruments and the control cabinet |
| Process Transmitters | Supply measured process signals to the I/O system |
| Control Valves / Actuators | Receive control signals from applicable output circuits |
| I/O Cabinet | Houses termination and associated control-system hardware |
| Foxboro Control System | Executes process control strategies and manages I/O data |
| Cabinet Wiring Documentation | Defines field-point and termination assignments for maintenance |
Recommended Related Models
| Model | Product Type | Series | Typical Relationship |
|---|---|---|---|
| Foxboro FBM241 | I/O Termination Assembly | I/A Series | Related termination hardware within the same I/O platform |
| Foxboro FBM243 | I/O Termination Assembly | I/A Series | Related termination assembly for compatible I/A Series configurations |
| Foxboro FBM242 | Compression Termination Assembly | I/A Series | Same product family and termination function |
| Foxboro FBM240 Series | I/O Termination Hardware | I/A Series | Related termination hardware family |
| Foxboro I/A Series Termination Assemblies | I/O Termination Hardware | I/A Series | Broader family of field wiring interface components |
Key Advantages
- Provides a dedicated field-wiring termination interface for I/A Series systems
- Keeps field connections organized within the control cabinet
- Separates field wiring from the electronic I/O interface
- Supports maintenance and replacement of established Foxboro installations
- Uses compression termination for the applicable field connections
- Helps simplify point identification and cabinet servicing
Technical FAQs
What is the function of the Foxboro FBM242 P0916NG?
The FBM242 P0916NG provides the physical termination interface between field wiring and associated Foxboro I/A Series I/O hardware. It organizes the field connections but does not independently execute control logic.
Is the FBM242 an active I/O module?
No. It is a compression termination assembly. Signal processing and control functions are handled by the associated I/A Series electronic I/O hardware and control system.
Why is termination documentation important when replacing the FBM242?
The termination assembly is connected to multiple field circuits, so each conductor must return to the correct termination point. Wiring diagrams and point assignments help prevent channel mismatches or incorrect field connections during replacement.
What should be checked before commissioning a replacement FBM242?
Verify the model and part number, mounting arrangement, field-wire termination points, associated I/O hardware, and point-to-point wiring. A controlled signal check should then confirm that representative field points correspond to the intended I/O channels.