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- Termination Cable
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- 2 meters
- 3 kg
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Product Overview
The Foxboro RH931RN is an I/A Series 200 Type 2 P/PVC termination cable used to connect compatible field termination assemblies with Foxboro FBM interfaces. It belongs to the termination cable family used for field wiring connections in I/A Series 200 control systems.
The cable provides the electrical path between the termination assembly and the associated FBM interface. Field signals can pass through this connection to the appropriate I/O circuitry, while output circuits can use the same path to reach field devices.
RH931RN is the current replacement designation associated with the legacy P0931RN model. It is therefore relevant when maintaining existing I/A Series 200 installations and replacing an older termination cable without changing the established field wiring architecture.
The P/PVC construction uses a polyurethane outer jacket with semi-rigid PVC primary conductor insulation, suitable for industrial control cabinet and field termination applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product | RH931RN |
| Product Family | I/A Series 200 Termination Cable |
| Cable Type | Type 2 |
| Cable Construction | P/PVC |
| Application | Field Wiring / Termination Assembly Connection |
| System | Foxboro I/A Series 200 |
| Associated Modules | FBM2xx |
| Cable Jacket | Polyurethane |
| Primary Conductor Insulation | Semi-rigid PVC |
| Temperature Range | -20 to +80°C (-4 to +176°F) |
| Predecessor Model | P0931RN |
| Cable Length | 2 meters |
| Shipping Weight | 3 kg |
Product Features
- Type 2 P/PVC termination cable for Foxboro I/A Series 200 systems.
- Intended for compatible FBM2xx field wiring arrangements.
- Provides the electrical connection between termination assemblies and FBM interfaces.
- Uses a polyurethane outer jacket with semi-rigid PVC conductor insulation.
- Supports organized routing of field signals within the control system.
- Suitable for maintenance and replacement of existing I/A Series 200 wiring.
- RH931RN corresponds to the legacy P0931RN model.
- Suitable for industrial process control and instrumentation applications.
Working Principle
RH931RN is a passive electrical interconnection component within the I/A Series 200 field I/O path. It does not perform signal conversion, amplification, isolation, or processing.
For an input circuit, the field signal travels from the instrument through the field termination assembly and cable to the associated FBM input circuitry. The FBM then makes the signal available to the control system for processing.
For an output circuit, the signal travels from the FBM through the cable and termination assembly toward the connected field device.
The cable therefore forms part of the physical signal path between the field wiring and the control system. Correct matching of the Type 2 termination arrangement, FBM configuration, and cable assembly is required during replacement.
Role in an I/A Series 200 Field I/O Architecture
| System Element | Role |
|---|---|
| Field Instruments | Generate measurement signals or receive control signals |
| Field Wiring | Connects field devices with the termination assembly |
| Type 2 Termination Assembly | Provides the field-side interface |
| RH931RN | Carries electrical circuits between the termination assembly and FBM |
| FBM2xx Module | Acquires field inputs or provides field outputs |
| I/A Series 200 Control System | Processes field information and executes control functions |
| Operator / Engineering Station | Provides monitoring, configuration, diagnostics, and operator control |
Industrial Applications
| Application | Typical Use |
|---|---|
| Process Instrumentation | Connecting field instruments with compatible FBM interfaces |
| Chemical Processing | Routing instrumentation and control signals through termination assemblies |
| Oil and Gas | Maintaining existing Foxboro I/A Series field wiring |
| Power and Utilities | Connecting field devices with centralized process control I/O |
| Manufacturing | Integrating field instrumentation with established I/A Series 200 systems |
| DCS Maintenance | Replacing existing Type 2 termination cables |
| Legacy System Service | Updating P0931-series cable installations to the RH931 family |
Installation and Maintenance
- Verify the applicable FBM2xx module and Type 2 termination assembly before removing the existing cable.
- Confirm that the replacement cable matches the required Type 2 P/PVC termination arrangement.
- Isolate the relevant field and control circuits according to the plant maintenance procedure.
- Record the existing cable routing and termination points before removal.
- Inspect the termination assembly and connector interfaces for contamination, mechanical damage, or loose connections.
- Route the replacement cable through the established cabinet wiring path without excessive bending or mechanical stress.
- Maintain appropriate separation from wiring that may introduce electrical interference where cabinet installation rules require it.
- Ensure the cable connections are fully seated and secured before restoring the associated circuits.
- Perform continuity checks when required by the maintenance procedure.
- Verify the corresponding FBM channels after installation to confirm correct signal transmission.
- Compare the installed cable identification with the system wiring drawings and maintenance records.
- Record the replacement and installation information in the system maintenance documentation.
Related Components
| Component | Function |
|---|---|
| Foxboro FBM2xx Modules | Provide field input and output interfaces |
| Type 2 Termination Assembly | Provides the field-side wiring interface |
| Field Wiring | Connects instruments and control devices with the termination assembly |
| I/A Series 200 Control System | Processes field signals and executes control functions |
| P0931RN | Legacy model corresponding to RH931RN |
Recommended Related Models
| Model | Application / Relationship |
|---|---|
| P0931RN | Legacy model corresponding to RH931RN |
| RH916DV | Type 2 P/PVC termination cable in the RH916 family |
| RH916DW | Type 2 P/PVC termination cable for an alternative connection length |
| RH916DX | Type 2 P/PVC termination cable for an extended connection |
| RH931RM | Related I/A Series 200 termination cable in the P0931/RH931 family |
Key Advantages
- Current RH931-series designation corresponding to P0931RN.
- Type 2 P/PVC construction for compatible I/A Series 200 applications.
- Supports organized field-to-FBM signal connections.
- Suitable for FBM2xx termination arrangements.
- Useful for maintenance of established Foxboro control systems.
- Simplifies replacement of legacy P0931RN installations.
Technical FAQs
What is the Foxboro RH931RN used for?
RH931RN is a Type 2 P/PVC termination cable used to connect compatible field termination assemblies with FBM2xx interfaces in Foxboro I/A Series 200 systems.
What is the relationship between RH931RN and P0931RN?
RH931RN is the current replacement designation corresponding to the legacy P0931RN model. Both belong to the Type 2 P/PVC termination cable family.
What does P/PVC mean on the RH931RN?
P/PVC refers to a polyurethane outer jacket combined with semi-rigid PVC primary conductor insulation.
Can RH931RN replace P0931RN?
RH931RN is the corresponding successor model for P0931RN. The installed termination assembly, FBM configuration, and system wiring should still be checked before replacement.