Description
Product Summary
The Foxboro FBM218/237 P0916QD is a redundant adapter used in compatible Foxboro I/A Series and Foxboro Evo process automation installations. Its purpose is to connect a redundant pair of fieldbus modules to a single termination cable and associated termination assembly. This arrangement allows two modules to share the field-output interface within a supported redundant configuration.
The adapter is a system interconnection component, not an analog output module. It does not independently generate 4–20 mA signals or provide HART communications. Those functions belong to the associated FBM modules. The legacy part number is P0916QD, while Schneider Electric documentation identifies RH916QD as its superseding designation for the related FBM237 configuration. Verify the exact module family and installed hardware before ordering a replacement.
Product identification
- Brand: Foxboro / Schneider Electric
- Product designation: FBM218/237 P0916QD
- Product type: Redundant adapter
- Legacy part number: P0916QD
- Superseding designation documented for FBM237: RH916QD
- Associated module families: FBM218 and FBM237
- System family: Foxboro I/A Series and Foxboro Evo
- Primary function: Redundant module connection to a shared termination cable
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Foxboro / Schneider Electric |
| Product number | P0916QD |
| Product type | Redundant adapter |
| Associated modules | FBM218 and FBM237, subject to system configuration |
| System role | Connects a redundant module pair to a single termination cable |
| Termination interface | Shared connection to the associated termination assembly through a compatible cable |
| Redundancy arrangement | Two compatible modules installed in adjacent baseplate positions |
| Output signal | Determined by the associated I/O modules and termination assembly |
| Analog output capability | Not generated by the adapter itself |
| HART communication capability | Provided by compatible HART-capable modules, not by the adapter itself |
| Replacement designation | RH916QD is documented as superseding P0916QD for FBM237 applications |
| Calibration | Not an analog measurement or output module; confirm maintenance requirements in the applicable system documentation |
| Dimensions and weight | Confirm against the exact adapter hardware revision and manufacturer documentation |
The adapter’s function should not be confused with the specifications of the FBM218 or FBM237 module. Channel count, output range, accuracy, power consumption, and communication functions are properties of the associated I/O module and configuration, not independent specifications of P0916QD.
Key Features and Engineering Benefits
Supports Redundant Module Architecture
The P0916QD supports a system arrangement in which two compatible modules share one field termination interface. This helps implement module-level redundancy without requiring a separate termination cable for each module.
Consolidated Termination Connection
The adapter provides a single termination-cable connection for the redundant module pair. The cable then connects to the corresponding termination assembly, keeping the field-wiring interface organized.
Supports Maintainable Control-System Design
In a correctly configured redundant system, the adapter forms part of the physical connection arrangement that allows paired modules to operate through a shared termination assembly. System availability still depends on the modules, configuration, wiring, termination assembly, and applicable redundancy logic.
Suitable for Legacy Foxboro Installations
The P0916QD designation is relevant when maintaining existing Foxboro I/A Series installations. Identifying the correct adapter is particularly important when replacing obsolete or legacy-numbered components.
Replacement Identification Through RH916QD
For FBM237-related applications, Schneider Electric documentation identifies RH916QD as superseding P0916QD. This provides a useful reference when checking current stock and replacement options, but the exact installed module family must be verified before substitution.
FBM218/237 P0916QD
FBM218/237 P0916QD
System Compatibility and Integration
The P0916QD is associated with redundant FBM218 and FBM237 arrangements. These module families have different I/O functions, so compatibility must be checked against the actual installation rather than inferred from the shared adapter designation alone.
Before purchasing, confirm:
- The installed module model and part number.
- Whether the application uses FBM218 or FBM237 hardware.
- The baseplate type and the positions occupied by the redundant module pair.
- The termination assembly part number.
- The required termination cable type and length.
- Whether the current documentation specifies P0916QD or a superseding adapter.
- The system configuration and approved redundancy arrangement.
For the standard FBM218 redundant arrangement, the two modules occupy adjacent baseplate positions. The redundant adapter fits over the associated termination-cable connectors, creating one connection to the termination assembly. The manufacturer’s FBM218 documentation describes this arrangement in its redundant module configuration diagram.
Installation and Replacement Notes
Verify the Installed Configuration
Check the module labels and system drawings before removing or ordering the adapter. Do not assume that an adapter is suitable merely because a supplier lists both FBM218 and FBM237 in its product title.
Check the Cable and Termination Assembly
The adapter is part of a connection path that includes the baseplate connectors, termination cable, and termination assembly. Verify that each component is compatible with the installed module family.
Follow Approved Maintenance Procedures
Use the site’s approved isolation, removal, and replacement procedures. Inspect the adapter and mating connectors for mechanical damage, contamination, or poor seating. After replacement, verify that the redundant modules are recognized and that the intended termination path is functioning correctly.
Confirm Replacement Part Numbers
P0916QD is the legacy number. RH916QD is identified in Schneider Electric documentation as superseding P0916QD for FBM237 applications. Confirm the approved replacement for the exact FBM218 or FBM237 configuration with the applicable manufacturer documentation before installation.
Applications
The Foxboro P0916QD is relevant to industrial process-control systems where compatible I/O modules are configured redundantly.
Typical application environments include:
- Oil and gas process automation
- Chemical and petrochemical plants
- Power generation and utility process systems
- Continuous manufacturing operations
- Legacy Foxboro I/A Series control installations
- Process plants maintaining redundant analog output configurations
Its role is infrastructure-level: it supports the connection arrangement for redundant modules rather than directly controlling a field device.
Product Overview
The Foxboro FBM218/237 P0916QD redundant adapter is a small but important component in a supported redundant I/O installation. It connects a pair of compatible modules to one termination cable, which then links to the field termination assembly. This arrangement allows the paired modules to share the same field interface while the control system manages module redundancy.
For an FBM218 configuration, the associated module provides eight isolated analog output channels that support standard 4–20 mA signals and HART communication. In a redundant pair, one module acts as the master and the other as the tracker. If one module detects a qualifying failure, the system’s configured redundancy behavior allows the healthy module to continue supplying the output current. The adapter supports the physical connection arrangement required for that configuration; it does not perform the control logic or generate the output signal itself.
For FBM237 applications, the related module is a channel-isolated 0–20 mA analog output module. Schneider Electric’s documentation identifies RH916QD as the superseding designation for the legacy P0916QD adapter in that context.
When sourcing this component, the main engineering concern is correct system matching. The module family, baseplate, termination assembly, cable, and adapter must form a compatible assembly. Confirming those details before purchasing reduces the risk of receiving a component that fits the general product family but does not match the installed configuration.
Frequently Asked Questions
What is the Foxboro P0916QD?
P0916QD is a Foxboro redundant adapter associated with compatible FBM218 and FBM237 module configurations.
Is P0916QD an analog output module?
No. It is a redundant adapter. Analog output signals are provided by the associated I/O modules.
What does the redundant adapter do?
It connects a redundant pair of compatible modules to a single termination cable and associated termination assembly.
Which modules are associated with P0916QD?
The designation is commonly associated with FBM218 and FBM237 redundant arrangements. Confirm compatibility against the exact installed hardware and manufacturer documentation.
What is the replacement for P0916QD?
Schneider Electric documentation identifies RH916QD as superseding P0916QD for FBM237 applications. Verify the approved replacement for the specific module family and installation.
Does P0916QD support HART communication?
The adapter does not independently provide HART communication. HART functionality comes from the associated compatible module, such as the FBM218.
Does P0916QD have an independent output channel count?
No. It does not provide independent I/O channels. Channel count and signal characteristics depend on the modules and termination assembly used in the system.
What should be checked before ordering?
Confirm the installed module family, adapter number, baseplate arrangement, termination assembly, cable type, and any manufacturer-designated replacement part number.
Can P0916QD be replaced by RH916QD in every installation?
Do not assume universal interchangeability. RH916QD is documented as a superseding designation for FBM237 applications. Confirm the exact hardware configuration and approved replacement before installation.
Manufacturer Reference
Consult the official Foxboro product specification for the associated FBM218 module and the relevant FBM237 documentation to verify the redundant-adapter arrangement and part-number compatibility.
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