{"product_id":"honeywell-fc-psu-uni2412-sps5878-lf-power-supply-unit","title":"Honeywell FC-PSU-UNI2412 SPS5878-LF Power Supply Unit","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell FC-PSU-UNI2412\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eFC-PSU-UNI2412\u003c\/strong\u003e SPS5878-LF Power Supply Unit, operates as a dedicated hardware component for stable DC output distribution and internal rail voltage regulation within Honeywell Distributed Control Systems (DCS) and process automation networks. The self-contained processor-adjacent sub-unit directly transforms main line electrical energy into a regulated output feed without structural voltage drift under volatile thermal loads.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eFC-PSU-UNI2412\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number \/ Suffix\u003c\/td\u003e\n\u003ctd\u003eSPS5878-LF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.8 kg (1.76 lbs) net chassis mass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e377 mm x 408 mm x 92 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to +70 deg C continuous operational deployment range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to +85 deg C climate preservation boundaries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Tolerance\u003c\/td\u003e\n\u003ctd\u003e5% to 95% RH, non-condensing envelope\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e100-240 VAC universal nominal input range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Frequency\u003c\/td\u003e\n\u003ctd\u003e50\/60 Hz line frequency tolerances\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC ±2% nominal regulated output feed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e2.5 A or 5 A continuous current allocation (model configuration dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Output\u003c\/td\u003e\n\u003ctd\u003e12 W rated delivery ceiling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003ePower Supply Modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control \u0026amp; DCS Instrumentation Rails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-20 mA HART Loop Protocol and Channel-to-Channel Isolation\u003c\/strong\u003e The power supply module incorporates internal galvanic isolation barriers between the high-voltage AC mains input and the 24 VDC output rails. This topology suppresses high-frequency switching ripples, preventing electrical noise from leaking into adjacent analog input channels and protecting connected 4-20 mA HART loop networks from data packet corruption or dynamic loop sags.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCold Junction Compensation (CJC) and Signal Conversion Pathways\u003c\/strong\u003e Because this module functions as a centralized power rectification layer rather than a thermocouple sensor termination board, it acts purely as an electrical stabilization node. The clean 24 VDC output supplies noise-free potential directly to distributed I\/O carriers, allowing remote temperature modules to resolve raw millivolt conversions and execute localized hardware CJC calculations without power-induced calculation offsets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the internal voltage regulation circuit handle abrupt load steps within its output current envelope?\u003c\/p\u003e\n\u003cp\u003eA: The module maintains an output voltage tolerance matrix of 24 VDC ±2% across its full current limits. Internal solid-state feedback components monitor the output rails concurrently, executing high-speed load correction steps to suppress transient voltage dips during heavy inductive switching sequences on the field-side circuits.\u003c\/p\u003e\n\u003cp\u003eQ: What are the continuous ventilation requirements for the hardware across its full operating temperature range?\u003c\/p\u003e\n\u003cp\u003eA: The power supply module requires unhindered thermal dissipation paths inside the enclosure cabinet to operate reliably up to its +70 deg C ambient limit. Impeding vertical airflow through the chassis slot tracks accelerates internal heat concentration, which will eventually degrade component lifecycles or trigger localized thermal safety cutouts.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":45103085256819,"sku":"FC-PSU-UNI2412 SPS5878-LF","price":410.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/screenshot_2026-06-15_11-24-43.png?v=1781502848","url":"https:\/\/www.dcssupplier.com\/products\/honeywell-fc-psu-uni2412-sps5878-lf-power-supply-unit","provider":"DcsSupplier Limited","version":"1.0","type":"link"}