Honeywell FC-PSUNI2424 Replacement for Experion PKS

Product Overview

Honeywell FC-PSUNI2424 Replacement for Experion PKS: Smooth Migration from Legacy DCS Power Infrastructure

The Honeywell FC-PSUNI2424 is a universal power supply module designed for the Experion PKS Series C distributed control system platform. As industrial facilities transition away from aging DCS architectures — including legacy Honeywell TDC 3000, PlantScape, and early Experion R100/R200 installations — the FC-PSUNI2424 serves as the authoritative drop-in replacement for obsolete or end-of-life power supply units that can no longer be sourced through standard channels. TOPNLMS maintains verified stock of this module, pre-tested and ready for immediate dispatch from our Xiamen warehouse, with full 12-month warranty coverage on every unit.

Migrating a live DCS environment carries significant risk if power supply compatibility is not confirmed at the component level. The FC-PSUNI2424 accepts a wide AC/DC input range and delivers regulated 24 VDC output to the Series C controller chassis, I/O carrier assemblies, and communication backplanes. Its universal input design means that facilities operating on 100–240 VAC or 24 VDC plant bus can install this module without rewiring the cabinet power distribution rail — a critical advantage when minimizing downtime during a hot-swap or scheduled maintenance window.

In a typical Experion PKS Series C cabinet, the FC-PSUNI2424 works in conjunction with the C300 Process Controller, Series C I/O Link modules, and the IOTA (I/O Termination Assembly) carrier boards. During a retrofit from an older Honeywell HC900 hybrid controller or a TDC 3000 HPM (High-Performance Process Manager), engineers frequently need to re-evaluate the power budget across the new rack. The FC-PSUNI2424 supports redundant power configurations when paired with a second unit and the appropriate power bus connector, ensuring no single point of failure in critical process control loops.

Compatibility Comparison Table

Seamless Upgrade Solutions

A complete Experion PKS Series C migration rarely involves a single module. When replacing the FC-PSUNI2424, field engineers typically audit the entire cabinet for co-dependent components that may also be at end-of-life. The C300 Process Controller is the most common controller module found alongside this power supply; if the C300 is being retained, confirm its firmware revision is compatible with the current Experion R4xx or R5xx software release before commissioning the new power supply. The Series C I/O Link (IOLIM) module manages communication between the controller and remote I/O cabinets over the Fault Tolerant Ethernet (FTE) network — verifying IOLIM firmware and FTE switch configuration is a standard pre-commissioning step.

On the I/O side, Series C IOTA carrier boards for AI, AO, DI, and DO modules must be inspected for physical condition and terminal torque during any power supply replacement, since the cabinet is already de-energized. If the project scope includes expanding I/O capacity, Series C Analog Input modules (e.g., 8-channel HART-enabled AI cards) and Digital Output modules can be added to existing IOTA carriers without structural cabinet changes. For facilities migrating from Modbus RTU or PROFIBUS DP field devices to HART or Foundation Fieldbus, a Series C Communication Interface module handles protocol bridging within the same chassis.

Projects that involve relocating control cabinets or consolidating multiple HPM cabinets into a single Series C enclosure should also evaluate the Experion PKS chassis backplane and power bus connectors for mechanical integrity. In some brownfield sites, the 24 VDC distribution rail and associated fuse blocks are replaced simultaneously with the FC-PSUNI2424 to bring the entire power distribution assembly up to current IEC 61511 functional safety standards. Signal isolators and surge protection devices on analog loops are also commonly refreshed during this window to eliminate ground loop interference that can mask process alarms.

Retrofit Guidance FAQ

Q: Can the FC-PSUNI2424 replace my existing power supply without rewiring the cabinet?
A: In most Series C cabinets, yes. The module uses a standard IEC terminal block layout consistent with Honeywell’s Series C chassis design. If you are migrating from a TDC 3000 or PlantScape cabinet, a wiring adapter harness may be required for the AC input side; the 24 VDC output bus connection is standardized.

Q: Does replacing the power supply require any changes to the C300 controller configuration or Experion software?
A: No. The FC-PSUNI2424 is a transparent power infrastructure component. The C300 controller, IOLIM, and all I/O modules continue to operate on their existing configurations. No control strategy download or hardware reconfiguration is required after the swap.

Q: What communication protocols does this module affect?
A: The FC-PSUNI2424 is a power supply only and does not participate in any communication protocol (FTE, HART, Modbus, PROFIBUS, Foundation Fieldbus). Replacing it has no impact on network topology or protocol configuration.

Q: How do I verify the module is functioning correctly after installation?
A: After energizing the cabinet, check the green LED status indicator on the module face. In Experion Station, navigate to the hardware tree and confirm the C300 and all I/O modules report healthy status. Monitor the 24 VDC bus voltage at the distribution rail with a calibrated multimeter to confirm output is within ±1% of nominal.

Q: Is redundant power supply operation supported?
A: Yes. Install a second FC-PSUNI2424 in the adjacent power supply slot and connect both units to the chassis power bus. The system automatically load-shares and provides bumpless failover if one unit faults.

Warranty Assurance

Every FC-PSUNI2424 unit shipped by TOPNLMS is covered by a 12-month warranty from the date of delivery. Prior to dispatch, each module undergoes functional verification including input voltage range testing, output voltage regulation check, and visual inspection for connector integrity and PCB condition. Units that do not meet specification are quarantined and never shipped.

If a unit develops a fault within the warranty period, TOPNLMS provides direct replacement support with priority processing. Our technical team is available to assist with installation questions, compatibility verification, and commissioning guidance. We understand that DCS downtime carries significant operational cost — our standard dispatch timeline is 1–3 business days for in-stock units, with express shipping options available for critical plant situations.

For procurement teams requiring documentation, we can provide test reports, packing lists, and commercial invoices aligned with your purchasing process. All units are shipped with appropriate ESD protective packaging and clearly labeled with part number, serial number, and warranty expiry date.

Contact our team to confirm stock availability, request a quotation, or discuss bulk procurement pricing for MRO inventory programs.