{"product_id":"honeywell-2mlr-dbst-expansion-driver","title":"Honeywell 2MLR-DBST Expansion Driver","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell 2MLR-DBST\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e2MLR-DBST\u003c\/strong\u003e Expansion Driver, operates as a dedicated hardware component for deterministic rack expansion and CPU interface bus driving within 2MLR redundant CPU platforms. Mounted directly at the CPU connector position of an extension base, it drives electrical logic communication over twisted-pair CAT5 media across distance intervals up to 100 m between extension chassis units.\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\u003e2MLR-DBST\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\u003eIndustrial Standard Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.1 kg (Shipping Weight: 1.5 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eBase Module Form Factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eBackplane Powered\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible CPUs\u003c\/td\u003e\n\u003ctd\u003e2MLR-CPUH\/T, 2MLR-CPUH\/F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedia Type\u003c\/td\u003e\n\u003ctd\u003eElectrical (TP \/ CAT5)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Inter-Base Distance\u003c\/td\u003e\n\u003ctd\u003e100 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoader Interface\u003c\/td\u003e\n\u003ctd\u003eExtension Drive USB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStation Number Range\u003c\/td\u003e\n\u003ctd\u003e1 to 31\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Position\u003c\/td\u003e\n\u003ctd\u003eCPU slot (CPU0 connector) on extension base\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol \u0026amp; DCS Integration\u003c\/h3\u003e\n\u003cp\u003eThe 2MLR-DBST maintains high-integrity physical layer signals between local CPU bases and remote I\/O chassis carrying field process telemetry. Built-in channel-to-channel isolation on the backplane communication drivers mitigates ground potential shifts and cross-talk noise between expansion nodes. This isolation preserves measurement accuracy for critical 4-20 mA HART loop instrumentation and DCS analog cards attached to remote extension racks across long copper cable runs.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What happens if an invalid station number outside the 1 to 31 range is assigned to the 2MLR-DBST?\u003c\/p\u003e\n\u003cp\u003eA: Assigning a station address outside the permitted range of 1 to 31 triggers an immediate system configuration error, preventing backplane bus synchronization with the main CPU.\u003c\/p\u003e\n\u003cp\u003eQ: Can the loader connection on the 2MLR-DBST be accessed while mounted on an extension base?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the module features a front-facing extension drive USB connector that allows programming and diagnostic loader access directly at the base site.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003ePower down the extension chassis completely before inserting the 2MLR-DBST into the designated CPU0 connector slot.\u003c\/li\u003e\n\u003cli\u003eRoute industrial-grade TP\/CAT5 cabling away from high-voltage power lines and variable frequency drives to minimize electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003eVerify that the total cable distance between connected extension bases does not exceed 100 m to prevent transmission signal degradation.\u003c\/li\u003e\n\u003cli\u003eSet the station address selector to a valid integer between 1 and 31 prior to energizing the base power supply.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":53599114133813,"sku":"2MLR-DBST","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/2MLR-DBST.png?v=1789609914","url":"https:\/\/www.5gplc.com\/products\/honeywell-2mlr-dbst-expansion-driver","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}