Product Details
The Honeywell FC-PSU-UNI2450U V1.0, also cataloged as the FC-PSU-UNI2450U Power Supply Module, operates as a dedicated hardware component for AC-to-DC power conversion and high-current voltage stabilization within Honeywell Safety Manager and DCS platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | FC-PSU-UNI2450U V1.0 |
| Brand | Honeywell |
| Origin | USA |
| Weight | 4.41 kg |
| Dimensions | Standard system rack power module dimensions |
| Operating Temp | -20 to +70 deg C (Full load to +50 deg C; half load to +70 deg C) |
| Power Consumption | Internal conversion loss dependent on load efficiency |
| Input Voltage Range | 110-240 VAC |
| Input Current | 14-6 A |
| Input Frequency | 50-60 Hz |
| Output Voltage | 25 VDC or 28 VDC |
| Output Current | 48 A at 25 VDC / 43 A at 28 VDC |
| Part Number | 136-012000G51 |
| Approval Certification | E168320 (Industrial Control Equipment) |
Process Control & DCS Power Infrastructure Characteristics
The FC-PSU-UNI2450U V1.0 incorporates channel-to-channel isolation and integrated surge suppression to maintain continuous power stability across DCS controllers and field instrumentation loops. Designed to handle severe main line variations, the unit supports both 25 VDC and 28 VDC field wiring drops using a 4-20 mA HART loop protocol environment without introducing ripple noise into analog input modules. Onboard power regulation circuits isolate internal logic solvers from field-side short circuits and ground loop faults.
Frequently Asked Questions
Q: What is the thermal derating requirement for the FC-PSU-UNI2450U V1.0 when cabinet temperatures exceed 50 deg C?
A: The power supply delivers its full rated output current (48 A at 25 VDC / 43 A at 28 VDC) up to a maximum surrounding air temperature of 50 deg C. Between 50 deg C and 70 deg C, the total continuous output current must be derated linearly down to 50% capacity.
Q: How is the output voltage specified between 25 VDC and 28 VDC executed on this hardware?
A: The module is configured at the factory/hardware selection pin level (Vb1200-1-r interface) to supply either 25 VDC at 48 A or 28 VDC at 43 A to compensate for IR voltage drops across long field cable runs to FTAs.
Field Installation Guidelines
- Physical Mounting: Install the unit vertically into the designated enclosure chassis slot. Secure all retaining hardware to guarantee frame grounding and mechanical stability against industrial vibration.
- AC Input Connections: Wire the primary AC source (110-240 VAC, 50-60 Hz) to the input terminals using correctly sized conductors rated for at least 14 A line current. Ensure phase, neutral, and protective earth conductors are terminated properly.
- Shielding & Grounding: Connect the system protective earth lug directly to the master enclosure copper ground bus using a low-impedance ground strap to reject common-mode electrical noise.
- Thermal Ventilation: Maintain minimum 50 mm clearance above and below the module ventilation openings to permit passive heat dissipation and maintain thermal limits inside the cabinet.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Understanding Root Causes of Unplanned PLC Stop Mode in Industrial Automation
Modern Programmable Logic Controllers manage execution through distinct operational states: Run, Stop, Start-Up, and Hold. During power-up, a controller initializes memory registers within Stop mode before briefly transitioning to Start-Up mode. During this phase, internal self-diagnostics evaluate system integrity across hardware and user programs. If the controller detects no critical faults, it enters Run mode to execute the control program continuously. However, any severe system anomaly forces the CPU back into Stop mode immediately to prevent erratic machine behavior across the plant floor.
Human-Machine Interface Design: Essential Guide to HMI Selection, Visualization, and Control System Integration
Human-Machine Interfaces (HMIs) serve as the primary operational window into complex industrial automation systems. Modern HMIs convert raw machine data into clear graphical displays, enabling operators to oversee entire manufacturing processes in real time. Instead of relying on physical control panels full of hardwired switches, engineers program interactive screens using intuitive graphics, dynamic color coding, and responsive touch interfaces. Over my 15 years in control systems engineering, I have observed HMIs transform from basic display screens into sophisticated command centers that drive operational efficiency across DCS and PLC environments.
Understanding Safety Relays in Industrial Automation: Architecture, Operation, and Functional Safety
Standard electromechanical relays provide basic electrical isolation between low-voltage control circuits and high-power output loads. A traditional switching relay features a magnetic coil driving mechanical Common (COM), Normally-Open (NO), and Normally-Closed (NC) contacts. However, standard relays pose severe functional risks when deployed in critical safety interlock circuits. High current inrush or mechanical wear can weld contacts together permanently. If contact welding occurs in an emergency stop circuit, pressing the button fails to halt hazardous machinery movements. Consequently, global functional safety standards prohibit standard relays for critical machine guarding functions.