Description
Honeywell FC‑PSU‑UNI2450U Universal Safety Power Supply Unit
Product Brand & Model Title
Official Product Name: FC‑PSU‑UNI2450U Universal Safety Power Supply Unit Brand: Honeywell Model No: FC‑PSU‑UNI2450U Product Grade: Safety‑rated rack‑mount power supply for Honeywell FC‑SIS Safety Instrumented System; available as spare‑part stock
General Product Overview
The FC‑PSU‑UNI2450U is a universal switching‑mode power supply dedicated for Honeywell Safety Manager / FC‑SIS safety instrumented system racks. It converts universal AC mains input into regulated 24 VDC output to feed safety CPU, safety I/O modules and field‑side safety sensors. It integrates comprehensive protection functions including over‑voltage, over‑current, short‑circuit and fan‑fault monitoring. It supports hot‑swap operation and parallel redundant configuration for high‑availability safety‑system architecture. This unit is widely used for ESD, FGS and SIL‑rated safety interlock loops within petrochemical, oil‑gas and power‑plant sites.
Model Coding Definition
‑ FC: Honeywell FC‑SIS Safety‑system series prefix ‑ PSU: Power Supply Unit ‑ UNI: Universal wide‑range AC input ‑ 24: Nominal 24 VDC output ‑ 50: 5 A rated output current ‑ U: Universal hardware variant for FC‑SIS rack installation
Hardware revisions: V1.0, V2.1; V2.1 features improved efficiency and enhanced diagnostic capability.
FC-PSUNI2450U
Technical Specifications
Electrical Parameters
‑ Input Voltage: 93‑253 V AC, 47‑63 Hz universal input ‑ Output Voltage: 24 VDC (adjustable ±1 %) ‑ Rated Output Current: 5 A max ‑ Max Output Power: 120 W ‑ No‑load Power Consumption: 13 W ‑ Hold‑up Time: ≥100 ms under full‑load condition ‑ Protection: Over‑voltage, over‑current, short‑circuit, over‑temperature, fan‑fault alarm ‑ Status Relay: Dry‑contact alarm relay for power‑supply fault signal
Environmental Specifications
‑ Operating Temperature: −20 ℃ ~ +70 ℃ (cabinet installation) ‑ Storage Temperature: −40 ℃ ~ +85 ℃ ‑ Relative Humidity: 5 %‑95 %, non‑condensing ‑ Vibration & Shock: Compliant with IEC 60068‑2 industrial cabinet standards ‑ Pollution Degree: G3 per ISA‑S71.04 for heavy‑industrial environments ‑ Ingress Rating: IP20 (cabinet‑mount only)
Mechanical & Certification
‑ Mounting: Rack‑mount plug‑in module for Honeywell FC‑SIS rack ‑ Weight: Approx. 1.0 kg ‑ Certifications: CE, UL508, TÜV, ATEX / IECEx Zone 2, Class 1 Div 2; IEC 61508 suitable for SIL 3 safety‑system deployment ‑ Lifecycle Status: Active spare‑part supply; available for legacy FC‑SIS system maintenance.
Core Product Features
- Universal wide‑range AC input: Accepts global 110‑240 V AC mains without hardware re‑configuration.
- SIL‑3 compliant safety‑grade power supply: Designed for safety‑instrumented‑system power feeding, meets IEC 61508 safety‑related requirements.
- Full‑range multi‑fault protection: Over‑voltage, over‑current, short‑circuit, over‑temperature and fan‑failure monitoring.
- Redundant parallel operation support: Multiple units can run in parallel for N+1 redundant power architecture for maximum system uptime.
- Hot‑swap capable: Supports live replacement inside FC‑SIS rack without system power‑down.
- Fault‑alarm relay output: Dry‑contact signal transmits power‑supply fault status to upper‑level alarm system.
- Front‑panel LED diagnostics: Visual indicators for power‑ok, fault and fan‑alarm status for fast on‑site troubleshooting.
- High efficiency switching‑mode design: Reduces heat generation inside safety‑system cabinets.
Application Fields
‑ Petrochemical & chemical plants: Power supply for FC‑SIS / Safety‑Manager ESD emergency‑shutdown systems ‑ Oil‑gas industry: Fire & Gas (FGS) safety protection system power feeding for on‑shore & offshore installations ‑ Power‑generation industry: Safety interlock and turbine‑protection safety‑system rack power supply ‑ Refineries: Safety‑instrumented‑system power for critical process‑unit interlock loops ‑ Heavy‑process industry: SIL‑rated safety‑control cabinet power source ‑ Retrofit‑maintenance projects: Spare‑part replacement for existing Honeywell FC‑SIS installed‑base systems
Product Advantages & Value
‑ Purpose‑engineered for Honeywell FC‑SIS safety racks, fully compatible with Safety‑Manager CPU and I/O modules. ‑ Redundant parallel capability enables high‑availability power architecture for safety‑critical applications. ‑ Hot‑swap function minimizes plant downtime during power‑supply module maintenance. ‑ Comprehensive hardware‑level protection improves safety‑system robustness against mains‑side anomalies. ‑ Global hazardous‑area certifications satisfy international oil‑gas and petrochemical project standards.
Compatible System & Interface Description
‑ Compatible Platform: Honeywell FC‑SIS / Safety‑Manager Safety Instrumented System ‑ Installation: Plug‑in module inserted into FC‑SIS system rack, powered and connected via rack backplane ‑ Wiring: Screw‑terminal connectors for AC input, 24 VDC output and fault‑alarm relay ‑ Redundancy: Multiple FC‑PSU‑UNI2450U units can be paralleled inside same rack for N+1 redundancy ‑ Revision note: V1.0 and V2.1 are mechanically interchangeable; firmware compatibility should be verified before field replacement.
FC-PSUNI2450U
Related Recommended Products
- FC‑CPU‑0001: Safety‑Manager main safety CPU module
- FC‑DI‑16: Digital safety input module for FC‑SIS rack
- FC‑DO‑16: Digital safety output module
- FC‑PSU‑UNI2450: Earlier‑generation power‑supply variant
- FC‑SIS standard system rack: Hardware carrier for FC‑PSU‑UNI2450U and safety I/O cards
- Safety‑Manager engineering software: For system configuration and fault‑diagnosis review
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