Overview
Configured for AC-to-DC power conversion in the Honeywell Safety Manager system, the Honeywell FC-PSU-UNI2450U (FC-PSU-UNI2450U Power Supply Unit) converts 110-240 VAC input power into regulated DC output for connected system loads. The unit provides selectable 25 VDC or 28 VDC output and supports high-current loads up to the specified output rating.
Suffix Breakdown & Model Matrix
The supplied information identifies FC-PSU-UNI2450U as a single complete product designation. No verified suffix matrix or separate ordering-code breakdown was provided. Therefore, no additional suffix interpretation is assigned.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | FC-PSU-UNI2450U |
| Brand | Honeywell |
| Product Type | Switching Mode DC Power Supply Unit |
| Input Voltage | 110-240 VAC |
| Operating Input Range | 93-253 VAC |
| Input Frequency | 47-63 Hz |
| Output Voltage | 25 VDC default; 28 VDC selectable |
| Output Current | 48 A at 25 VDC; 43 A at 28 VDC |
| Maximum Output Power | Up to 1200 W |
| Efficiency | >87% at 230 VAC |
| Operating Temp | -5 deg C to +70 deg C |
| Storage Temperature | -25 deg C to +85 deg C |
| Dimensions | 420.5 mm x 140 mm x 90 mm |
| Weight | Approx. 5.7 kg |
| Protection | Dual overvoltage, short circuit, and over-temperature protection |
| Certifications | CE, TUV, UL 508, CSA, CID2 |
DC Power Conversion and Protection
The FC-PSU-UNI2450U accepts an AC input range of 93-253 VAC and operates at 47-63 Hz. It provides a selectable DC output of 25 VDC or 28 VDC through the specified configuration control.
At 25 VDC, the specified output current reaches 48 A within the -5 deg C to +50 deg C operating range. At 28 VDC, the specified output current reaches 43 A within the same temperature range. Above +50 deg C, the power supply applies load derating.
The unit incorporates dual overvoltage protection, short-circuit protection, and over-temperature protection. It also provides LED status indication and undervoltage alarm relay contacts for power-status monitoring.
Frequently Asked Questions
Q: What output voltage settings does the FC-PSU-UNI2450U provide?
A: The supplied specifications identify 25 VDC as the default output and 28 VDC as the selectable alternative.
Q: What output current is available at 25 VDC?
A: The specified output current is 48 A at 25 VDC within the -5 deg C to +50 deg C range.
Q: Does the FC-PSU-UNI2450U support hot-swappable replacement?
A: The supplied data describes independent connectors and a power switch for online replacement and maintenance. Actual system-level hot-swap operation must follow the applicable Honeywell installation and system documentation.
Field Installation Guidelines
Install the FC-PSU-UNI2450U according to the applicable Honeywell cabinet and system documentation. Verify the AC input rating and wiring before energizing the unit.
Confirm the input wiring for the applicable 110-240 VAC supply and verify protective grounding before operation. Keep AC wiring physically separated from low-level instrumentation and communication wiring.
Set the required output voltage according to the system design before connecting the load. Verify the selected 25 VDC or 28 VDC setting against the connected equipment requirements.
Use appropriately rated conductors for the high-current DC output. Secure the power connections and inspect terminal polarity before applying power to downstream equipment.
Allow sufficient cabinet ventilation for heat dissipation. When ambient temperature exceeds +50 deg C, account for the specified output-current derating.
Use the LED indicators and undervoltage alarm relay contacts for local and system-level power-status monitoring where supported by the installation design.
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