Description

Product Overview

The Honeywell FX-USI-0002 is a universal signal interface module designed for advanced process control and safety systems. Part of Honeywell’s Field Experience (FX) series, this module serves as a critical component in distributed control systems (DCS), enabling seamless integration of analog/digital field devices with higher-level control networks. The FX-USI-0002 provides 16-channel signal conditioning with configurable input/output types, making it adaptable to diverse industrial instrumentation requirements.

Engineered for Honeywell’s Experion PKS and Safety Manager platforms, the Honeywell FX-USI-0002 supports voltage, current, thermocouple, RTD, and discrete signal processing. Its intrinsic safety barriers (Ex ia certification) allow direct connection to hazardous area instruments, reducing the need for external isolators. The module’s hot-swappable design and automatic channel configuration simplify maintenance in continuous process industries. With built-in diagnostics and HART protocol support, it enhances system visibility while maintaining compatibility with legacy field devices.

Technical Specifications

Parameter Name	Parameter Value
Product Model	FX-USI-0002
Manufacturer	Honeywell
Product Type	Universal Signal Interface Module
Channels	16 (individually configurable)
Input Types	0-10V, 4-20mA, TC (J/K/T/E), RTD (Pt100/Ni120), DI
Output Types	4-20mA (sourced), DO (24VDC 0.5A)
Accuracy	±0.05% of span (analog), 1ms resolution (digital)
Isolation	1500V channel-to-channel/bus
HART Support	Yes (7.0 compliant)
Power Supply	24VDC ±10% (2.5A max)
Operating Temperature	-40°C to +70°C
Certifications	ATEX/IECEx Ex ia, SIL 2, CE, UL

FX-USI-0002

Key Features Description

The Honeywell FX-USI-0002 delivers unmatched flexibility in signal processing. Its software-configurable channels allow dynamic reassignment between analog input, analog output, and digital modes without hardware changes. The module features adaptive signal filtering that automatically adjusts to eliminate noise in electrically harsh environments.

Advanced diagnostics capabilities:
Continuous monitoring of field wiring integrity detects open circuits, short circuits, and signal drift. The module’s predictive maintenance algorithms analyze sensor performance trends, enabling proactive replacements before failures occur. For safety-critical applications, the FX-USI-0002 provides redundant power inputs and dual communication paths to maintain operation during single-point failures.

The integrated HART multiplexer allows simultaneous analog signal transmission and digital communication, enabling asset management systems to retrieve device diagnostics. Its galvanic isolation meets Category III requirements, protecting control systems from transient surges. The front-facing LED matrix provides per-channel status indication, while the mechanical keying system prevents incorrect module insertion.

Application Areas

The Honeywell FX-USI-0002 is widely deployed in industries requiring precise signal conditioning and high-density I/O solutions. In oil refineries, it interfaces with pressure transmitters and emergency shutdown valves. Pharmaceutical plants utilize its RTD inputs for bioreactor temperature monitoring while leveraging HART communication for smart instrument configuration.

Key implementation scenarios:

Power plant turbine control (vibration sensors, speed inputs)
Chemical processing (corrosive environment pH/conductivity sensors)
Water treatment (flowmeter pulse counting, valve position feedback)
Food & beverage (hygienic area temperature monitoring)
Offshore platforms (hazardous zone gas detectors)

The module’s -40°C operational capability makes it suitable for Arctic oil fields, while its vibration resistance (5g RMS) ensures reliability in mining operations. In batch processing systems, its fast digital input response (<1ms) enables precise event sequencing.

Product Assurance

Honeywell provides a 5-year warranty for the FX-USI-0002, covering manufacturing defects and premature component failures. All modules undergo full functional testing, including 72-hour burn-in at extreme temperatures. The product is supported by Honeywell’s Global Technical Support network, offering 24/7 emergency response. Firmware updates maintain compatibility with evolving control systems, while the module’s design allows field upgrades without system shutdown. Compliance with IEC 62443 cybersecurity standards ensures protection against unauthorized access in networked environments.

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