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
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Understanding Safety Relays in Industrial Automation: Architecture, Operation, and Functional Safety
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