Description
Product Description
The Honeywell FC-PSU-UNI2450U V1.0 is a universal AC-input power supply designed for Honeywell Safety Manager safety instrumented systems. It converts AC mains power into regulated DC power for compatible safety-system equipment, supporting applications in emergency shutdown (ESD), process shutdown, and industrial safety control cabinets. The unit features selectable 25 VDC or 28 VDC output, dual overvoltage protection, output-voltage monitoring, and an undervoltage alarm contact. It is designed for industrial environments where stable power delivery and system diagnostics are essential. Verify the hardware version and system requirements before replacing an existing power supply.
FC-PSU-UNI2450U V1.0
FC-PSU-UNI2450U V1.0
Product Parameters and Datasheet
Brand: Honeywell
Model: FC-PSU-UNI2450U V1.0
Part Number: 51452683-100 (verify against the unit label)
Series: Safety Manager
Product Name: Universal AC Input Safety System Power Supply
Product Type: Industrial Power Supply Unit
Input Voltage: 110–240 VAC
Input Operating Limits: 93–253 VAC
Input Frequency: 47–63 Hz
No-Load Power Consumption: 13 W
Output Voltage: Selectable 25 VDC or 28 VDC
Output Current at 25 VDC: 48 A at -5°C to +50°C
Output Current at 28 VDC: 43 A at -5°C to +50°C
Output Ripple and Noise: Less than 40 mV peak-to-peak
Hold-Up Time: 100 ms at full load
Inrush Current: Less than 15 A
Protection: Dual overvoltage protection, overload and short-circuit protection
Undervoltage Alarm: Relay changes state when output falls below the specified threshold
Approvals: CE, TÜV, UL, CSA, Class I Division 2, subject to version and certification
Dimensions: 420.5 × 140 × 90 mm (W × H × D), including the applicable unit enclosure
Weight: Approximately 5.7 kg including cable set
Operating Temperature: -5°C to +70°C; output-current derating applies at elevated temperatures
Storage Temperature: -25°C to +85°C
Place of Manufacture: Not confirmed for the individual unit
Product Status: Legacy version; confirm availability with supplier
Country of Origin: Verify the unit label and shipping documentation
Discontinued: Confirm current lifecycle status with Honeywell
Recommended Honeywell Models
1. FC-PSU-UNI2450U – Universal AC-input power supply family; verify exact version.
2. FC-PSU-UNI2450U V2.1 – Later version identified in Honeywell power-supply replacement guidance.
3. FC-PSU-UNI4825U – Safety Manager power supply with 48 VDC output.
4. FC-PSU-UNI6020U – Safety Manager power supply with 60 VDC output.
5. FC-PSU-UNI11011U – Safety Manager power supply with 110 VDC output.
6. FC-PSU-UNI12010U – Safety Manager power supply with 120 VDC output.
7. FC-QPP-0001 – Safety Manager processor module family.
8. FC-USI-0002 – Safety Manager universal safety interface module.
9. FC-USIO-0001 – Safety Manager universal safety input/output module; verify exact configuration.
10. FC-PDIO01 – Safety Manager digital input/output module.
11. FC-SAI-1620M – Safety Manager analog input module; verify the complete part number.
12. FC-SDO-0824 – Safety Manager digital output module; verify the exact variant.
13. FC-SDI-1624 – Safety Manager digital input module; verify the exact variant.
14. FC-PSU-FLTR2450 – Power-supply filter accessory; confirm compatibility with the installed PSU.
15. FC-PSU-UNI2450 – Earlier related power-supply model; confirm retrofit requirements.
Compatibility Note: Honeywell identifies FC-PSU-UNI2450U V2.1 as a replacement option for certain earlier UNI2450 and UNI2450U versions. This does not guarantee a drop-in replacement in every installation; verify required cable sets, mounting, output settings, and additional system components before substitution.
