Description
The Honeywell FS-PSU-UNI2450U (frequently designated as FC-PSU-UNI2450U) is a high-performance, universal switching-mode DC power supply module engineered specifically for Honeywell’s Fail-Safe Control (FSC) and Safety Manager industrial safety platforms. Delivering a robust continuous output capacity of up to 1200 W, it converts universal AC mains into tightly regulated DC power—selectable between 25 VDC and 28 VDC—while integrating dual overvoltage protection, short-circuit resilience, and comprehensive diagnostic monitoring to ensure uninterrupted uptime in mission-critical safety instrumented systems.
📊 Product Datasheet Parameters
- 🏷️ Product Type & Model: Universal Power Supply Unit (FS-PSU-UNI2450U / FC-PSU-UNI2450U)
- ⚙️ System Application: Honeywell Safety Manager & Fail-Safe Controller (FSC) Architecture
- ⚡ Input Voltage Range: 110 to 240 VAC (Operating range: 93 to 253 VAC), 47 to 63 Hz
- ⚡ Output Voltage Selection: User-selectable via DIP switch (25 VDC nominal at 48 A or 28 VDC nominal at 43 A)
- 🔋 Maximum Output Power: 1200 W continuous operation
- 📈 Power Conversion Efficiency: Exceeds 87% at 230 VAC
- ⏱️ Hold-Up Time: Approximately 100 ms at full rated load
- 🛡️ Protection Circuitry: Dual overvoltage protection (compliant with DIN V 19250 / VDE V 0801), short-circuit protection, and over-temperature protection
- 🔌 Electrical Terminations: IEC 60320 C20 AC socket, dual Phoenix DC output connectors, and a 3-pole alarm socket
- 📐 Physical Dimensions: 420.5 mm x 140 mm x 90 mm (Width x Height x Depth)
- ⚖️ Product Net Weight: Approximately 5.7 kg (12.57 lbs)
- 🌍 Country of Origin: United States
- 🌡️ Operating Temperature Range: -5^\circC to +70^\circC (23^\circF to 158^\circF; load derating required above +50^\circC)
📖 Product Instructions for Use
- Power Isolation: Ensure that all primary AC supply lines are completely turned off, locked out, and the front-panel power switch is toggled off before handling, wiring, or extracting the power supply unit.
- Thermal Clearance Requirements: Mount the module securely in a vertical orientation where possible, ensuring at least 100 mm of unobstructed clearance space is reserved above and below the chassis for effective convection and fan-assisted cooling.
- Voltage Configuration: Verify and set the internal output configuration switch to match the exact voltage tier required by the safety controller rack architecture (25 VDC default or 28 VDC) prior to energizing the system.
- Status & Diagnostic Checks: Monitor the front-panel LED indicators (Solid Green for normal operation; flashing Red for faults, standby, or internal temperatures exceeding 90^\circC) and track the undervoltage alarm relay contact status during operation.
❓ Common Questions & Answers (Q&A)
- Q: What is the primary role of the FS-PSU-UNI2450U power supply?
A: It serves as a heavy-duty, high-efficiency power conversion module designed to supply stable 25 VDC or 28 VDC power rails to logic solvers and field loops inside Honeywell safety-instrumented racks.
- Q: How is the output voltage adjusted on this unit?
A: The output voltage can be toggled between 25 VDC (supporting up to 48 A) and 28 VDC (supporting up to 43 A) using an onboard DIP switch setting.
- Q: What safety standards does this power supply comply with?
A: It complies with multiple international safety requirements, carrying CE, TÜV, UL 508, and CSA certifications for demanding industrial environments.
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