{"product_id":"honeywell-51304920-100-serial-interface-module","title":"Honeywell 51304920-100 Serial Interface Module","description":"\u003cp\u003eConfigured for data exchange within TDC 3000 Distributed Control System architectures, the \u003cstrong\u003eHoneywell 51304920-100\u003c\/strong\u003e (\u003cstrong\u003e51304920-100\u003c\/strong\u003e Serial Interface Module) provides direct physical and electrical execution of serial communication between controllers and field instruments.\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\u003e51304920-100\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\u003e0.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e216 x 160 x 30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Ports\u003c\/td\u003e\n\u003ctd\u003eRS-232, RS-485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eTDC 3000 DCS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDCS Process Control and Connectivity\u003c\/h3\u003e\n\u003cp\u003eThe 51304920-100 module manages serial data traffic by supporting both RS-232 and RS-485 physical layer standards. Within the DCS environment, this interface card maintains channel-to-channel isolation on the serial bus, which prevents ground potential differences between remote field devices and the controller backplane from inducing data errors. By providing robust signal buffering, the module mitigates electromagnetic interference (EMI) typical in industrial cabling runs. Additionally, the assembly facilitates integration with 4-20 mA HART loop protocol instruments when used in conjunction with appropriate signal converters, ensuring that serial diagnostic data is successfully merged with primary process control loops.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does this module support hot-swapping on a live rack?\u003c\/p\u003e\n\u003cp\u003eA: The 51304920-100 is not designed for hot-swapping. Inserting or removing the module while the backplane is powered can induce transient voltages that may damage the serial communication buffers or interrupt the processor bus communication.\u003c\/p\u003e\n\u003cp\u003eQ: Are there specific termination requirements for the RS-485 port?\u003c\/p\u003e\n\u003cp\u003eA: Yes. When utilizing the RS-485 port in multi-drop configurations, ensure that 120 Ohm termination resistors are installed at both physical ends of the communication line to prevent signal reflections and data collisions.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eEnsure the control rack is de-energized and all power sources are isolated before module installation.\u003c\/li\u003e\n\u003cli\u003eCarefully slide the module into the designated rack slot, ensuring the edge connector is fully engaged with the backplane socket.\u003c\/li\u003e\n\u003cli\u003eSecure the module front panel to the rack frame using the provided mounting hardware to guarantee chassis grounding and structural stability.\u003c\/li\u003e\n\u003cli\u003eRoute RS-232\/RS-485 cabling through shielded conduits, keeping signal lines physically separated from high-voltage AC power lines to minimize noise induction.\u003c\/li\u003e\n\u003cli\u003eVerify cable integrity and termination resistance before establishing communication with field instruments.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":52975976841525,"sku":"51304920-100","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/51304920-100.png?v=1780990011","url":"https:\/\/www.5gplc.com\/products\/honeywell-51304920-100-serial-interface-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}