Honeywell 51402573-150 HPM UCN Interface Module — UCN A/B Modem Card for TDC 3000 & Experion PKS

Brand Honeywell

Model Honeywell 51402573-150

Product Overview

The Honeywell 51402573-150 is an HPM UCN Interface Module — the dedicated communication interface that connects Honeywell’s High-Performance Process Manager (HPM) to the Universal Control Network (UCN) within a TDC 3000 Distributed Control System. In simple terms, it is the modem bridge between the controller and the network: the Honeywell 51402573-150 sits inside the HPMM card set, converts the controller’s internal bus signals into UCN protocol traffic, and places that traffic onto the deterministic UCN backbone where it can reach operator stations, application processors, I/O nodes, and peer controllers. Without this interface, the HPM would be electrically and logically isolated from the rest of the DCS.

Physically, the Honeywell 51402573-150 mounts directly into slot 1 of the HPMM card file, directly below the High-Performance Comm/Control card, where it plugs into a 50-pin cable socket on the backplane. Its front panel carries the UCN cable connections — typically a dual redundant pair of BNC coaxial interfaces (UCN A and UCN B) using 75 Ω coaxial cable — so a network cable can be connected or inspected without disturbing adjacent cards. This front-access design is a deliberate serviceability feature: in a live cabinet, a technician can route and dress UCN coaxial cabling cleanly while keeping the rest of the card file undisturbed.

The Honeywell 51402573-150 is built as an industrial printed-circuit assembly with conformal coating (the “CC / CC-C” designation) applied to the PCB. This coating protects the signal-conditioning and protocol circuitry against humidity, corrosive atmospheres, and conductive dust, which directly supports the module’s role in 24/7 process environments. It also carries a single LED status indicator for rapid visual confirmation of network and module health. As a member of the HPM card set — alongside the Comm/Control card and the I/O Link card — the Honeywell 51402573-150 is not an optional accessory but a foundational element of the controller’s network identity; a healthy UCN interface is the precondition for every control, alarm, and trend value the HPM exchanges with the wider system.

Request Price

Description

Technical Specifications

Parameter Name	Parameter Value
Product Model	Honeywell 51402573-150
Manufacturer	Honeywell
Product Type	HPM UCN Interface Module (UCN Modem Card)
System Platform	Honeywell TDC 3000 / TPS / Experion PKS
Controller	High-Performance Process Manager (HPM / HPMM)
Network	Universal Control Network (UCN)
Protocol	UCN proprietary deterministic control-network protocol
Network Interfaces	Dual UCN coaxial (A & B), BNC connectors
Cable Type	75 Ω coaxial cable
Communication Speed	100 Mbps (UCN nominal)
Backplane Connector	50-pin cable socket
Mounting Position	Slot 1, beneath the Comm/Control card in the HPMM card file
Power Source	System chassis backplane (backplane-supplied; no separate PSU)
Coating	Conformal Coated (CC / CC-C) PCB
Diagnostic Indicator	1 LED (Power / Network / Status)
Redundancy	Supports UCN A/B dual-redundant network paths
Dimensions (approx.)	120 × 90 × 50 mm (standard HPM card form factor)
Weight (approx.)	0.34–0.40 kg (≈ 0.75–0.88 lb; revision-dependent)
Operating Temperature	0 °C to +60 °C (confirm per revision)
Storage Temperature	−40 °C to +85 °C
Humidity	5 % to 95 % RH, non-condensing
Hot-Swap	Not recommended under power (de-energize card file before extraction)
Country of Origin	United States

Main Features and Advantages

Purpose-built HPM-to-UCN bridge. The defining strength of the Honeywell 51402573-150 is that it is engineered specifically to translate between the HPM’s internal bus and the UCN — not adapted from a generic networking card. Every connector, timing characteristic, and protocol interaction aligns with the original Honeywell architecture, so the module assumes its network role without configuration software, firmware loading, or protocol bridging. The controller simply gains its UCN presence through the interface.

Dual redundant UCN paths for fault tolerance. The interface provides separate A and B UCN coaxial connections, mapping directly to the UCN’s redundant topology. If one cable path fails — through a break, connector fault, or cable-plant issue — the surviving path continues carrying control traffic, and the HPM remains visible to the rest of the DCS. This seamless failover is central to the high-availability design philosophy of TDC 3000 and Experion systems, and the Honeywell 51402573-150 is the physical enabler of that redundancy at the controller level.

Deterministic, high-speed control communication. The UCN is a time-predictable process control network, and the Honeywell 51402573-150 preserves its deterministic behavior. At the nominal 100 Mbps UCN rate, control data, I/O updates, alarms, and trend values move across the backbone with consistent timing — the precondition for stable closed-loop control and for operator displays that reflect the true current state of the process.

Conformal-coated for harsh industrial service. With its CC / CC-C conformal coating, the Honeywell 51402573-150 is protected against the moisture, salt, corrosive vapor, and conductive dust commonly found in refineries, chemical plants, and heavy-process facilities. This protection extends the service life of the coating-sensitive components and reduces the incidence of intermittent communication faults that can be difficult to diagnose.

Clean signal conversion and isolation. The interface handles the electrical conversion between the controller backplane and the UCN coaxial medium, including impedance matching to the 75 Ω cable plant. Proper termination and clean signal conditioning prevent reflections and signal degradation that would otherwise manifest as UCN errors, missed telegrams, or unstable node communication. A well-seated, correctly terminated Honeywell 51402573-150 is therefore often the remedy for an otherwise elusive network-quality problem.

Drop-in form factor and lifecycle continuity. Designed to plug directly into the designated HPMM slot via its 50-pin backplane socket, the Honeywell 51402573-150 installs without mechanical modification or rewiring of the UCN cabling. For plants committed to a legacy-asset strategy, this makes the module a rapid, low-risk replacement that defers costly full-DCS migration while restoring original network reliability — particularly valuable given that the rest of the HPM card set (Comm/Control and I/O Link) can remain in place.