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Honeywell FC-PSU-UNI2450U Universal Power Supply Unit

Configured for stabilized DC power conversion in Honeywell Safety Manager, FSC, and Experion PKS platforms, the Honeywell FC-PSU-UNI2450U (FC-PSU-UNI2450U Universal Power Supply Unit) provides direct AC to DC power execution for controller chassis, I/O racks, and field instrumentation loads.

Hardware Specifications

Parameter	Specification
Model	FC-PSU-UNI2450U (also referenced as FC-PSU-UNL2450U)
Brand	Honeywell
Product Type	Universal Power Supply Unit
System Compatibility	Honeywell Safety Manager, FSC, Experion PKS
Origin	USA
Weight	Approx. 5.7 kg
Dimensions	420.5 x 140 x 90 mm
Operating Temp	-5 deg C to +70 deg C, derating above +50 deg C
Power Consumption	Approx. 13 W no-load
Input Voltage	110-240 VAC, operating range 93-253 VAC
Input Frequency	47-63 Hz
Output Voltage	Selectable 25 VDC or 28 VDC via DIP switch
Output Current	48 A at 25 VDC mode, 43 A at 28 VDC mode
Maximum Output Power	Approx. 1200 W
Efficiency	>87% at 230 VAC input
Inrush Current	<15 A
Hold-Up Time	Approx. 100 ms at full load
Protection Functions	Overvoltage, short circuit, overload, thermal shutdown
Status Indication	Green LED for normal operation, red LED for fault conditions
Alarm Contact	Undervoltage relay output, opens below 22 VDC, rated 100 mA / 30 V
Hot-Swap Function	Supported with dedicated power switch and quick-disconnect connectors
AC Connector	IEC 60320 C20 socket
DC Connector	Dual Phoenix PCV6 connectors
Certifications	CE, TÜV, UL 508, CSA, Class I Division 2

Honeywell Process Power Interface Characteristics

The FC-PSU-UNI2450U supplies regulated DC power for Honeywell safety and process control hardware. Therefore, it maintains stable electrical output for controller modules, I/O assemblies, and connected instrumentation circuits.

The unit supports industrial process environments requiring channel-to-channel isolation considerations within connected I/O architectures. In addition, Honeywell control platforms commonly integrate 4-20 mA HART loop protocol, FOUNDATION Fieldbus, and Profibus PA field communication interfaces. The power supply provides the required DC source stability for these process interface modules.

The power module includes dual overvoltage protection circuits. Furthermore, it provides short-circuit protection, overload shutdown, and thermal protection to maintain controlled operation during abnormal electrical conditions.

Frequently Asked Questions

Q: What output voltage settings does the FC-PSU-UNI2450U support?
A: The power supply supports selectable 25 VDC and 28 VDC output modes through an onboard DIP switch configuration.

Q: Does the FC-PSU-UNI2450U support hot replacement?
A: Yes. The unit supports hot-swap operation with a dedicated power switch and quick-disconnect connectors when installed in the applicable Honeywell system configuration.

Q: What protection functions are integrated into this power supply?
A: The module includes dual overvoltage protection, short-circuit protection, overload protection, and thermal shutdown protection.

Field Installation Guidelines

• Install the FC-PSU-UNI2450U inside the specified Honeywell equipment enclosure with sufficient ventilation clearance.
• Verify AC input wiring polarity and protective earth connection before energizing the module.
• Use suitable cable routing practices to separate AC input wiring from low-level signal wiring.
• Connect DC output terminals with proper conductor sizing according to the connected load current requirements.
• Maintain correct grounding practices for the Honeywell Safety Manager, FSC, and Experion PKS system chassis.
• Inspect connectors, terminal contacts, and mechanical mounting points during maintenance intervals.
• Confirm output voltage selection before applying power to connected controller and I/O assemblies.

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