{"product_id":"allen-bradley-point-i-o-1734-mb-standard-mounting-base","title":"Allen-Bradley POINT I\/O 1734-MB Standard Mounting Base","description":"\u003ch2\u003e\u003cstrong\u003eModule Overview\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1734-MB\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis the foundational structural component of the Allen-Bradley POINT I\/O system. It serves as the physical housing and backplane interface for all 1734 series I\/O modules. This mounting base is designed to snap directly onto a standard DIN rail, providing the electrical \"bus\" connections that allow data and power to flow between the communication adapter and individual I\/O points. By utilizing a modular design, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1734-MB\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eallows for rapid assembly and expansion of distributed I\/O systems, ensuring that modules are securely held and properly aligned within the rack.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDetailed Engineering Specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1734-MB\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a passive component that facilitates the connection between the I\/O module and the Removable Terminal Block (RTB).\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Type:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eI\/O Mounting Base (Chassis Component)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSystem Compatibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAll POINT I\/O 1734 Modules\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMounting Method:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eHorizontal or Vertical DIN rail (35mm)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBus Type:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIntegrated POINT I\/O Backplane\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNumber of Contacts:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e8 Electrical contacts for module-to-backplane interface\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eModule Alignment:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eKeyed mechanical placement to prevent incorrect module insertion\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eField Power Distribution:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIntegrated field-side power bus\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Method:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSnap-on DIN rail attachment with a locking screw for high-vibration security\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTerminal Block Compatibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRequires a 1734-RTB or 1734-RTBS (sold separately)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePhysical Weight:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e0.13 lbs (0.06 kg)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eStandard POINT I\/O width (12mm)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eMechanical Design and Keying\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eOne of the critical safety features of the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1734-MB\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis its integrated mechanical keying. Before inserting an I\/O module, the user sets a rotary position on the mounting base that matches the specific module type (e.g., Digital Input, Analog Output, etc.). This ensures that once the base is wired, only a compatible module can be plugged in, preventing accidental hardware damage caused by mismatched voltage levels or signal types.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eBackplane and Field Power Integration\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1734-MB\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edoes more than just hold the module; it acts as a bridge for two distinct electrical paths:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eThe POINTBus:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe internal communication bus that carries data between the modules and the Ethernet or DeviceNet adapter.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eThe Field Power Bus:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eA separate power distribution path that carries 24V DC or 120V AC to the I\/O modules to power field-side devices like sensors and solenoids.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis dual-bus architecture allows for \"Daisy Chaining\" power across the entire I\/O rack, significantly reducing the amount of individual power wiring required in the control cabinet.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Best Practices\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1734-MB\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eshould be installed starting from the left (next to the communication adapter) and moving to the right. Each base \"interlocks\" with the one to its left, creating a continuous backplane. Once the base is snapped onto the DIN rail, the orange locking screw at the bottom should be tightened to ensure the base remains stationary during module insertion or machine vibration.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTechnical FAQ\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the 1734-MB include the wiring terminals?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1734-MB\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis the base housing only. You must also purchase a Removable Terminal Block, such as the 1734-RTB (screw terminals) or 1734-RTBS (spring-clamp terminals), to connect your field wiring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I replace a 1734-MB in the middle of a rack without moving other modules?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBecause the mounting bases interlock horizontally to form the backplane, replacing a base usually requires sliding adjacent modules or bases to the side to disengage the internal bus connectors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs there a limit to how many 1734-MB bases I can connect together?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe physical limit is typically determined by the communication adapter (e.g., a 1734-AENTR supports up to 63 modules) and the power budget of your 1734-EP24DC expansion power supplies.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52457698394421,"sku":"1734-MB","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/1734-MB.jpg?v=1773987544","url":"https:\/\/www.5gplc.com\/products\/allen-bradley-point-i-o-1734-mb-standard-mounting-base","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}