Foxboro P0926KQ-A Replacement for I/A Series DCS

Product Overview

Foxboro P0926KQ-A Replacement for I/A Series DCS: Smooth Transition & Legacy System Compatibility

The Foxboro P0926KQ-A is a dedicated power cable assembly designed for the Foxboro I/A Series Distributed Control System (DCS). As legacy I/A Series installations age and original power interconnect components approach end-of-life, the P0926KQ-A serves as the authoritative replacement and upgrade solution — enabling plant engineers to restore system integrity without redesigning existing wiring infrastructure, control cabinet layouts, or power distribution architecture.

Whether you are maintaining an aging I/A Series rack, replacing a failed cable in a live production environment, or executing a planned modernization of your DCS power subsystem, the P0926KQ-A delivers the connector geometry, conductor rating, and shielding specification required for seamless drop-in installation. The cable is engineered to interface directly with Foxboro I/A Series field enclosures, FBM (Field Bus Module) carrier assemblies, and associated power distribution modules — preserving the original wiring topology and eliminating the need for adapter harnesses or custom terminations.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful I/A Series power cable replacement rarely occurs in isolation. In most retrofit and modernization projects, the P0926KQ-A is installed alongside a broader set of DCS components that collectively restore or upgrade the control system’s power and signal integrity. During commissioning, engineers typically inspect and replace the Foxboro P0926KU power supply module, which feeds the same rack bay and shares the same power distribution bus. Where the FBM carrier assembly has been disturbed, the Foxboro FBM207 or FBM237 field bus modules may require reseating or replacement to restore I/O communication after the power cable swap.

In installations where the I/A Series rack is being partially upgraded to accommodate newer Foxboro Evo or Foxboro DCS 200 Series controllers, the P0926KQ-A bridges the power architecture between legacy and modern hardware, allowing a phased migration without full rack replacement. Engineers performing this type of hybrid migration also commonly source the Foxboro P0916TG termination assembly and P0922YK signal cable to complete the interconnect set within the same control cabinet.

For sites transitioning from older Foxboro SPEC 200 or Micro I/A platforms to the current I/A Series architecture, the P0926KQ-A is a standard line item in the bill of materials alongside Foxboro P0903GV power conditioners and FCP270 fieldbus communication processors. The cable’s standardized connector and conductor specification ensure that no custom wiring adapters are required when integrating with existing Foxboro 200 Series marshalling panels or junction boxes already installed in the field.

Where redundant power feeds are being established as part of a reliability upgrade, the P0926KQ-A is typically ordered in pairs, with the secondary cable routed through a separate conduit path to the redundant power supply — a configuration fully supported by the I/A Series rack’s dual-feed architecture. This approach is commonly implemented alongside Foxboro P0926XA redundant power modules to achieve N+1 power redundancy without modifying the existing control cabinet structure.

Retrofit Guidance FAQ

Q: Can the P0926KQ-A be installed without re-terminating field wiring?
A: Yes. The P0926KQ-A uses the same OEM-specification keyed connector as the original Foxboro power cable. No re-termination of field wiring or modification of the rack-side connector is required. The cable is a direct mechanical and electrical replacement.

Q: Does replacing the power cable affect the I/A Series communication protocol or FBM configuration?
A: No. The P0926KQ-A is a power interconnect cable and has no dependency on Fieldbus, HART, or Modbus communication protocols. FBM module configuration, tag databases, and control strategies remain unaffected during and after replacement.

Q: Is the P0926KQ-A compatible with both standard and redundant I/A Series rack configurations?
A: Yes. The cable is compatible with both single-feed and dual-feed (redundant) I/A Series rack power architectures. For redundant configurations, two cables are required — one per power feed path.

Q: What is the physical installation space requirement?
A: The P0926KQ-A is dimensioned to fit within the standard I/A Series rack bay without modification to cable trays, conduit entries, or control cabinet door clearances. No additional mounting hardware is required.

Q: Can this cable be used during a phased migration from legacy Foxboro platforms?
A: Yes. The P0926KQ-A is routinely used in phased migration projects where legacy I/A Series hardware is being upgraded incrementally. It maintains power continuity to existing FBM carriers and I/O modules while newer controller hardware is introduced into adjacent rack bays.

Warranty Assurance

Every Foxboro P0926KQ-A shipped by TOPNLMS is covered by a 12-month warranty from the date of delivery. Prior to shipment, each unit undergoes functional inspection and continuity verification to confirm connector integrity, conductor continuity, and shielding effectiveness. Units that do not meet specification are quarantined and not shipped.

In the event of a warranty claim, TOPNLMS provides direct replacement support with priority processing for production-critical applications. Our technical team is available to assist with installation verification, compatibility confirmation, and post-installation commissioning questions. Replacement units are dispatched from our Xiamen warehouse, with international express shipping available to minimize plant downtime.

For volume procurement, project-based orders, or emergency replacement requirements, contact our sales team directly to confirm stock availability, lead time, and export documentation requirements.