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Honeywell FC-PSU-UNI4825U Universal Power Supply Module

Configured for 48 VDC power conversion in Honeywell Safety Manager and Experion PKS power distribution assemblies, the Honeywell FC-PSU-UNI4825U (FC-PSU-UNI4825U Universal Power Supply Module) provides direct AC to DC electrical conversion for controller racks, I/O modules, and field interface loads.

Hardware Specifications

Parameter	Specification
Model	FC-PSU-UNI4825U
Brand	Honeywell
Product Type	Universal AC to DC Power Supply Module
Operating Temp	-5 deg C to +70 deg C
Power Consumption	Approx. 1200 W maximum output power
Input Voltage Range	93 to 253 VAC operating range
Input Frequency	47 to 63 Hz
Nominal Output Voltage	48 VDC
Maximum Output Current	25 A
Efficiency	Greater than 87% at 230 VAC nominal load
Output Protection	Overvoltage, overcurrent, short circuit, and overtemperature protection
Redundancy Function	Parallel configuration support with output decoupling and ORing protection
Status Indication	Green LED for normal DC output status, red LED for fault or standby indication
Alarm Interface	Potential-free fault and undervoltage alarm contact
Mounting Type	Cabinet or rack panel mounting

Process Control Power Distribution Features

The FC-PSU-UNI4825U integrates into Honeywell process control architectures by providing regulated 48 VDC output for system loads. Therefore, the module supports stable power delivery for connected controller and I/O assemblies.

The unit supports industrial power monitoring functions through alarm contacts and LED diagnostics. In addition, the protection circuits isolate abnormal electrical conditions before they affect downstream control equipment.

For Honeywell system installations, the module supports power architectures that require controlled DC distribution. The design includes electrical characteristics suitable for safety system cabinets and process automation environments.

Frequently Asked Questions

Q: Does the FC-PSU-UNI4825U support redundant power configurations?
A: Yes. The module supports parallel redundant configurations through integrated output decoupling and ORing protection functions.

Q: What AC input range does the power supply accept?
A: The module accepts 93 to 253 VAC operating input with a 47 to 63 Hz frequency range.

Q: How does the module indicate operating and fault conditions?
A: The unit uses LED status indicators and potential-free alarm contacts to provide DC output and fault condition monitoring.

Field Installation Guidelines

• Install the FC-PSU-UNI4825U inside a suitable control cabinet with sufficient airflow around the power module.
• Connect AC input wiring according to the cabinet electrical design and applicable local installation standards.
• Use correctly rated DC wiring for the 48 VDC output terminals to prevent excessive voltage drop.
• Separate AC input cables from low-level signal wiring, communication cables, and analog measurement circuits.
• Connect protective earth according to the system grounding design before applying input power.
• Verify output polarity, alarm contact wiring, and redundancy connections before commissioning.
• Check LED status indicators after power-up to confirm normal module operation.

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