Honeywell FC-PSU-UNI2450U V1.0 Universal Power Supply Module

The Honeywell FC-PSU-UNI2450U V1.0 is a high-performance universal power supply module designed for industrial automation and process control systems. Engineered to deliver reliable and regulated 24V DC power to Honeywell controllers, I/O modules, and associated field devices, this module ensures continuous operation in critical environments. As part of the FC series power solution portfolio, the FC-PSU-UNI2450U is optimized for use in Honeywell Distributed Control Systems (DCS) such as Experion, as well as Programmable Logic Controllers (PLC) and safety instrumented systems.

Overview and Key Features

The FC-PSU-UNI2450U V1.0 power supply module provides stable DC power from a wide range of AC or DC sources, featuring robust construction and comprehensive protection mechanisms. Key features include:

• Universal input voltage range: 100–240 VAC (50/60 Hz) and 110–300 VDC for global compatibility

• Regulated 24 VDC output with high efficiency (typically > 90%) reducing heat dissipation and energy costs

• Output power rating suitable for powering multiple I/O modules and controllers (e.g., 50 W continuous)

• Built-in overload, overvoltage, and short-circuit protection for safe operation

• Redundancy support: 1+1 or N+1 redundant operation with automatic load sharing and OR-ing diodes

• Hot-swappable design allowing replacement without system shutdown in redundant configurations

• LED indicators for input power, output OK, and fault status for at-a-glance diagnostics

• Comprehensive diagnostics: output voltage monitoring, internal temperature sensing, and alarm relay contacts

Technical Specifications

Redundancy and High Availability

The FC-PSU-UNI2450U V1.0 is designed for applications demanding maximum uptime. It supports parallel operation with other identical modules for 1+1 or N+1 redundancy. In redundant configurations, modules automatically share the load current, and if one unit fails, the remaining units instantly assume the full load without interruption. The module includes an integrated OR-ing diode and alarm relay contacts that signal a fault to the control system. This redundancy architecture is essential for critical processes in oil and gas, power generation, and chemical industries.

Integration with Honeywell Systems

The FC-PSU-UNI2450U V1.0 mounts directly into standard Honeywell I/O racks (e.g., Series 8) and is compatible with C300 controllers, I/O modules, and field termination assemblies. It provides power to the rack backplane, supplying all connected modules. In larger systems, multiple power supplies can be installed in different slots to power separate sections or to provide redundancy. The module communicates its status via the backplane and front-panel LEDs, enabling easy monitoring from the control system or locally.

Applications

This power supply module is deployed across a wide range of industries:

• Oil and gas – offshore platforms, refineries, pipeline control centers

• Chemical processing – continuous and batch processes requiring high reliability

• Power generation – fossil, nuclear, and renewable plants

• Pharmaceutical – sterile manufacturing environments

• Water and wastewater – treatment plants and pumping stations

• Manufacturing – assembly lines and material handling systems

It is used to power controllers, I/O racks, fieldbus couplers, and other 24V DC automation equipment.

Installation and Maintenance

Installation is straightforward: the module slides into a dedicated slot in the I/O rack and is secured with integrated locking clips. Electrical connections are made via the rack backplane, so no field wiring is required. Front-panel LEDs provide immediate visual status: green for input power present, green for output OK, red for fault. In redundant setups, modules can be replaced while the system is running—simply unplug the faulty unit and insert a new one. The module's rugged construction meets ISA-S71.04 Class G3 for harsh environments, ensuring long-term reliability.

Certifications and Compliance

The Honeywell FC-PSU-UNI2450U V1.0 carries essential certifications for global use:

• CE – EMC Directive 2014/30/EU, Low Voltage Directive 2014/35/EU

• UL/cULus – UL 61010-1, UL 61010-2-201

• FM – Class I Division 2 (optional)

• RoHS, REACH compliant

• Marine certifications (ABS, DNV-GL) available on request

These certifications ensure compliance with safety and environmental standards worldwide.