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- RH926KM
- Power Supply Cable
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- 1.2 meters
- 3 kg
- Xiamen, China
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Product Overview
The Foxboro RH926KM is an I/A Series power supply cable used to connect compatible Foxboro FPS400-24 power supplies to modular baseplates in 200 Series control systems. It carries the power supply’s DC output to the baseplate, supporting the power distribution required by installed fieldbus modules and associated control hardware.
With a cable length of 1.2 meters, the RH926KM accommodates cabinet layouts where the power supply and baseplate require additional routing distance compared with shorter cable variants. Its function is specific to the power supply-to-baseplate connection; it is not the cable used to connect an incoming DC terminal block to the power supply.
The RH926KM supersedes the earlier P0926KM designation for the corresponding cable configuration. When selecting a replacement, the baseplate family and power supply connection arrangement should match the existing system. Cable length alone does not establish compatibility, particularly when an installation contains different generations of baseplates.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Foxboro |
| Model | RH926KM |
| Legacy Model | P0926KM |
| Product Series | I/A Series |
| Product Type | Power Supply Cable |
| Cable Function | Power supply output to modular baseplate |
| Cable Length | 1.2 meters |
| Cable Construction | 16 AWG shielded cable |
| Compatible System | Foxboro 200 Series control subsystem |
| Compatible Equipment | Compatible FPS400-style power supplies and modular baseplates |
| Maximum Cable Quantity | Up to six compatible baseplate power cables per power supply, subject to system requirements |
| Shipping Weight | 3 kg |
Product Features
- Power supply-to-baseplate connection: Transfers DC output power from a compatible supply to its designated modular baseplate.
- 1.2-meter cable length: Provides additional routing distance for control cabinet layouts that require more reach than shorter variants.
- 16 AWG shielded construction: Matches the specified cable construction for this baseplate power-cable family.
- I/A Series integration: Supports power distribution within compatible Foxboro 200 Series control subsystems.
- Defined replacement reference: RH926KM supersedes the legacy P0926KM designation for the corresponding cable configuration.
- Multiple baseplate connections: Supports installations where a compatible power supply serves multiple baseplates within the permitted system arrangement.
- Distinct cable function: Separates baseplate output-power wiring from input-terminal-block cables and other system interconnections.
- Maintenance identification: The part number and cable length help technicians select the intended replacement during servicing.
Working Principle
The RH926KM establishes the electrical path between the output connector of a compatible power supply and the power input of a modular baseplate. When correctly connected, it carries the supply’s DC output to the baseplate’s power-distribution interface.
The cable does not regulate voltage or convert power. Those functions belong to the power supply, while the baseplate distributes the available power to the connected modules according to the system design. The cable must therefore match the intended connector interfaces and the applicable baseplate configuration.
Where one power supply feeds several baseplates, the connected equipment must remain within the supply’s rated output capacity. The cable arrangement and the requirements of the installed modules also need to be considered. Using a longer cable provides routing reach but does not increase the available output power.
Role in a Foxboro I/A Series Power Distribution Architecture
The RH926KM forms part of the output-power path between a Foxboro power supply and a modular baseplate. The power supply provides the DC output, the cable transfers it to the baseplate, and the baseplate supplies the electrical interfaces required by compatible fieldbus modules.
| System Component | Function | Relationship to the RH926KM |
|---|---|---|
| Foxboro RH926KM | Transfers power-supply output to a modular baseplate | Provides the designated output-power connection |
| Foxboro FPS400-24 Power Supply | Supplies 24 V DC output power | Feeds the baseplate through the cable |
| Modular Baseplate | Provides mounting and electrical interfaces for modules | Receives power through the RH926KM |
| Fieldbus Modules (FBMs) | Interface field signals with the control system | Receive power through the configured baseplate |
| Field Control Processor, Where Applicable | Performs control and communication functions | Operates within the associated control-system architecture |
| Additional Baseplate Power Cables | Carry power to other compatible baseplates | Extend the distribution arrangement within system limits |
| DC Input Terminal Block Cable | Connects incoming DC power to the supply | Performs a separate input-side function |
| Control Cabinet | Houses and organizes control-system equipment | Provides the mounting and cable-routing environment |
Industrial Applications
| Application | Power Distribution Requirement | Role of the RH926KM |
|---|---|---|
| Process Automation Cabinets | DC power delivery to modular control-system baseplates | Connects the power supply output to the baseplate |
| Oil and Gas Facilities | Organized power connections for process-control hardware | Supports compatible Foxboro subsystem power distribution |
| Chemical Processing Plants | Power delivery to fieldbus module assemblies | Provides the designated output-power path |
| Power Generation Control | DC power distribution to compatible control hardware | Connects the supply to the receiving baseplate |
| Water and Wastewater Automation | Cabinet-based control-system power connections | Supports the configured baseplate power path |
| Industrial Process Monitoring | Power connections for modular field I/O equipment | Carries power to compatible baseplates |
| Control-System Expansion | Addition of baseplates within a supported subsystem | Provides additional cable reach for the planned layout |
| Maintenance and Repair | Replacement of a damaged or incorrectly identified output cable | Restores the connection when RH926KM is the specified variant |
Installation and Maintenance
- Verify the cable part number: Confirm that RH926KM is the specified output cable for the installed power supply and baseplate configuration.
- Identify the baseplate type: Check the baseplate model and connection arrangement before fitting the cable.
- Isolate the power supply: Follow the site’s electrical isolation and lockout procedures before disconnecting or replacing the cable.
- Inspect the connectors: Check for damaged housings, bent contacts, contamination or other conditions that could prevent proper mating.
- Confirm connector compatibility: Ensure both ends match their intended interfaces without forcing or modifying the connectors.
- Plan the cable route: Use the 1.2-meter length to reach the connection points without excessive tension or strain on the connectors.
- Prevent mechanical damage: Avoid sharp bends, crushing, abrasion and contact with hot surfaces or moving components.
- Maintain cabinet organization: Route the cable so it does not obstruct access to modules, ventilation paths or other service points.
- Secure both connections: Confirm that the connectors are fully seated and any applicable retaining features are engaged.
- Verify power-system capacity: Check that the connected baseplates and installed modules remain within the power supply’s specified output limits.
- Inspect before energizing: Check the cable jacket, connector seating and routing before restoring power.
- Record the replacement: Document the installed part number and any connector or wiring issues to support future maintenance and spare-parts identification.
Related Components
| Component | Function | Relationship to the RH926KM |
|---|---|---|
| Foxboro FPS400-24 Power Supply | Supplies DC output power | Provides the output connected to the baseplate |
| Foxboro Modular Baseplate | Houses and electrically connects compatible modules | Receives power through the RH926KM |
| Foxboro P0926KM | Legacy baseplate power supply cable designation | Superseded by RH926KM for the corresponding configuration |
| Foxboro RH926KK | Baseplate power supply cable, 0.4-meter variant | Provides a shorter cable option for compatible installations |
| Foxboro RH926KL | Baseplate power supply cable, 0.9-meter variant | Provides a shorter routing option |
| Foxboro RH926KN | Baseplate power supply cable, 1.5-meter variant | Provides a longer routing option |
| Foxboro RH926KP | Baseplate power supply cable, 1.8-meter variant | Supports a longer cable run |
| Foxboro RH926KQ | Baseplate power supply cable, 2.1-meter variant | Supports another cable-length requirement |
| Foxboro RH923NG | Power-distribution Y-cable | Provides additional physical power connections in compatible installations |
| Foxboro RH923DG | DC input terminal block cable | Connects the input terminal block to the power supply rather than the supply to the baseplate |
Recommended Related Models
| Model | Product Type | Relationship | Selection Consideration |
|---|---|---|---|
| Foxboro RH926KM | I/A Series Power Supply Cable | Main product | 1.2-meter cable for compatible modular baseplates |
| Foxboro P0926KM | I/A Series Power Supply Cable | Legacy designation | Corresponding earlier cable reference |
| Foxboro RH926KK | I/A Series Power Supply Cable | Shorter cable variant | 0.4-meter length for compatible installations |
| Foxboro RH926KL | I/A Series Power Supply Cable | Shorter cable variant | 0.9-meter length for compatible installations |
| Foxboro RH926KN | I/A Series Power Supply Cable | Longer cable variant | 1.5-meter length for compatible installations |
| Foxboro RH926KP | I/A Series Power Supply Cable | Longer cable variant | 1.8-meter length for compatible installations |
| Foxboro RH926KQ | I/A Series Power Supply Cable | Longer cable variant | 2.1-meter length for compatible installations |
| Foxboro RH923NG | I/A Series Power Distribution Y-Cable | Related distribution component | Provides additional physical connections in compatible FPS400 installations |
Key Advantages
- Provides a defined 1.2-meter power connection between compatible Foxboro supplies and modular baseplates.
- Uses the specified 16 AWG shielded cable construction.
- Supports organized DC power distribution in Foxboro 200 Series control cabinets.
- Provides a newer part-number reference corresponding to the legacy P0926KM designation.
- Keeps baseplate output-power wiring distinct from input-terminal-block and signal connections.
Technical FAQs
What is the primary function of the Foxboro RH926KM?
The RH926KM carries DC output power from a compatible Foxboro power supply to a modular baseplate. It is intended for the output side of the power system, not for connecting incoming power to the supply’s input terminal block.
How does RH926KM differ from RH926KL?
The main difference is cable length. RH926KM is 1.2 meters long, while RH926KL is 0.9 meters. Both belong to the modular-baseplate power cable family, but the selected length must suit the cabinet layout and specified connection arrangement.
Can RH926KM be used with legacy P0914XA/XB baseplates?
Do not assume compatibility based on cable length alone. The RH926KM belongs to the cable family specified for modular baseplates. Legacy P0914XA/XB baseplates use a separately identified cable family, so the baseplate part number and connector arrangement must be checked before selecting a replacement.
What should be checked when a baseplate loses power after RH926KM installation?
Check that the cable variant matches the supply and baseplate, both connectors are fully seated, and the power supply is operating normally. Also review the baseplate connection and overall subsystem load. Isolate the equipment before disconnecting or inspecting electrical connections.