Product Details
The Honeywell FC-PSU-UNI2450U V2.1, also cataloged as the FC-PSU-UNI2450U Power Supply Unit, operates as a dedicated hardware component for AC to DC power conversion and high-current regulated voltage output within Honeywell DCS platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | FC-PSU-UNI2450U V2.1 |
| Brand | Honeywell |
| Origin | USA |
| Weight | 5.7 kg |
| Dimensions | 28.5 x 18.0 x 12.5 cm |
| Operating Temp | -5 to +70 deg C |
| Power Consumption | 13 W at no load |
| Input Voltage Range | 110-240 VAC |
| Input Frequency | 47-63 Hz |
| Output Voltage | 25 VDC or 28 VDC |
| Output Current | 48 A at 25 VDC / 43 A at 28 VDC |
| Efficiency | > 87% at 230 VAC |
| Hold-up Time | 100 ms at full load |
| Inrush Current | < 15 A |
Process Control & DCS Power Infrastructure Characteristics
The FC-PSU-UNI2450U V2.1 utilizes dual overvoltage protection and channel-to-channel isolation circuits to prevent grid disturbance propagation to downstream system components. Regulating high-current 25 VDC or 28 VDC rails with ripple and noise suppression under 40 mVpp, the module supports stable bus execution across redundant control networks. Built-in thermal management maintains stable power distribution without introducing voltage drop across system field termination assemblies (FTAs) or safety logic solver racks.
Frequently Asked Questions
Q: How is the output voltage setting configured between 25 VDC and 28 VDC on the FC-PSU-UNI2450U V2.1?
A: Output voltage selection is configured via onboard DIP switches prior to powering the unit, allowing adjustment between the default 25 VDC output and 28 VDC for long-distance bus drop compensation.
Q: What are the thermal load derating parameters when operating above 50 deg C ambient temperature?
A: Continuous load capacity requires a derating factor of 30 W per deg C for ambient enclosure temperatures ranging from 50 deg C up to the maximum operating limit of 70 deg C.
Q: How does the unit maintain power continuity during brief AC supply interruptions?
A: Internal storage capacitance provides a hold-up time of 100 ms at full load, bridging short-duration line dips without causing logic solver resets or output channel dropouts.
Field Installation Guidelines
- Mechanical Placement: Mount the power supply unit inside a rigid metal panel enclosure, ensuring at least 50 mm clearance above and below the convective heat sinks or fan exhausts.
- AC Line Connection: Terminate incoming 110-240 VAC line power using AWG 14 (2.5 mm2) insulated copper wire connected securely to the main input terminals.
- Shielding & Grounding: Attach a dedicated bonding strap from the module ground lug directly to the main cabinet earth bar to route high-frequency electrical noise away from output DC buses.
- DC Load Verification: Verify total continuous DC current requirements across field termination assemblies do not exceed 48 A at 25 VDC before applying primary AC excitation.
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
Marshalling Cabinet Preventive Maintenance: Essential Healthiness Checks for PLC, DCS, and ESD Systems
Marshalling cabinets serve as the vital interface between field instrumentation and control room electronics in modern process facilities. Regular preventive maintenance of these cabinets ensures signal integrity across programmable logic controllers (PLCs), distributed control systems (DCS), and emergency shutdown (ESD) networks. System technicians must execute structured inspection protocols to mitigate environmental risks, identify loose wiring, and maintain continuous operational readiness.
Spatial Computing in Industrial Automation: Elevating PLC and DCS Operations with AR and VR
Industry 4.0 integrates digital intelligence into field operations, transforming factory automation landscapes worldwide. Spatial technologies—specifically Augmented Reality (AR) and Virtual Reality (VR)—redefine how engineers interact with industrial control systems. By bridging computer-generated CAD models with real-time operational technology (OT) data, immersive displays enable intuitive monitoring, rapid diagnostics, and safer maintenance across complex processing facilities.
Master Acceptance Testing: Understanding FAT and SAT in Industrial Control Systems
Factory Acceptance Testing (FAT) and Site Acceptance Testing (SAT) serve as critical quality assurance gateways in complex industrial control systems. Both procedures verify that programmable logic controllers (PLCs), distributed control systems (DCS), and associated field devices meet strict functional specifications. However, executing these tests effectively requires clear delineation between off-site staging and final field commissioning.