{"product_id":"51404391-375-serial-interface-module-honeywell","title":"51404391-375 Serial Interface Module | Honeywell","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell 51404391-375\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e51404391-375\u003c\/strong\u003e Serial Interface Module, operates as a dedicated hardware component for bi-directional serial data communication and logic signal processing within Honeywell TDC 3000 and Experion PKS DCS platforms. Interfacing directly with system backplane buses, the module processes multi-rail power logic and signal current loops, drawing 1.0 Amp at 3.3 VDC, 1.3 Amp at 5.1 VDC, 4 mA at 24 VDC, and 5.6 mA at 1.2 VDC. Internal processing components execute protocol management and serial data conversion across local process controller networks.\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\u003e51404391-375\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\u003e2.00 lbs (0.91 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard DCS Rack Card Profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eMulti-rail: 1.0 A @ 3.3 VDC, 1.3 A @ 5.1 VDC, 4 mA @ 24 VDC, 5.6 mA @ 1.2 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Interface\u003c\/td\u003e\n\u003ctd\u003eSerial Communication Bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Category\u003c\/td\u003e\n\u003ctd\u003eSerial Interface PLC Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Type\u003c\/td\u003e\n\u003ctd\u003eRack Mount \/ Card Chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eChannel-to-Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe 51404391-375 serial interface board incorporates galvanic channel-to-channel isolation barriers between internal processor logic circuits and external serial communication loops. High-speed optical isolators decouple transmit and receive lines to prevent ground potential variations from causing data corruption. This isolated physical architecture attenuates common-mode noise surges and voltage spikes along serial lines, safeguarding sensitive backplane transceivers during high-density field data transfers.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the 51404391-375 module be hot-swapped while the DCS rack backplane is energized?\u003c\/p\u003e\n\u003cp\u003eA: Hot-swapping depends on host controller chassis capabilities, but field practice requires disabling active serial communication links prior to card extraction to prevent logic bus errors.\u003c\/p\u003e\n\u003cp\u003eQ: How are power rail requirements supplied to the 51404391-375 card?\u003c\/p\u003e\n\u003cp\u003eA: All required operating voltages (3.3 VDC, 5.1 VDC, 24 VDC, and 1.2 VDC) are drawn directly from the system backplane power distribution bus via edge connector terminals.\u003c\/p\u003e\n\u003cp\u003eQ: What indicates proper chassis ground bonding for the serial communication shield?\u003c\/p\u003e\n\u003cp\u003eA: Ground continuity is achieved via metallic faceplate retention latches and card guide grounding clips contacting the grounded rack enclosure frame.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003ePower down the targeted rack chassis section or verify proper redundancy switchover state before inserting or removing the module.\u003c\/li\u003e\n\u003cli\u003eAlign the board card edges with the plastic chassis guide tracks, pressing firmly until edge connectors seat into the backplane receptacle.\u003c\/li\u003e\n\u003cli\u003eTighten top and bottom faceplate retention screws by hand to ensure structural stability and low-impedance grounding.\u003c\/li\u003e\n\u003cli\u003eRoute serial communication cables through dedicated low-voltage wiring channels away from AC power distribution lines.\u003c\/li\u003e\n\u003cli\u003eGround overall cable shielding to the main cabinet earth bus bar at a single point to prevent ground loop noise coupling.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":53621214970165,"sku":"51404391-375","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/51404391-375.png?v=1789973384","url":"https:\/\/www.5gplc.com\/products\/51404391-375-serial-interface-module-honeywell","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}