{"product_id":"allen-bradley-1746-io12dc-combination-input-output-module-slc-500","title":"Allen-Bradley 1746-IO12DC Combination Input\/Output Module SLC 500","description":"\u003cp\u003eConfigured for discrete signal acquisition and relay output switching in programmable logic controller architectures, the \u003cstrong\u003eAllen-Bradley 1746-IO12DC\/A\u003c\/strong\u003e (\u003cstrong\u003e1746-IO12DC\u003c\/strong\u003e Combination Input\/Output Module) provides direct physical and electrical execution.\u003c\/p\u003e\n\u003ch3\u003eModel Part Number Structure and Variant Mapping\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1746-IO12DC: Base hardware catalog number for the 12-channel combination module\u003c\/li\u003e\n\u003cli\u003e1746-1012DC: Alternative typographical spare part catalog designation\u003c\/li\u003e\n\u003cli\u003e1746-IOI2DC: Secondary alternative ordering identification reference\u003c\/li\u003e\n\u003cli\u003e1746-IO12DC\/A: Revision A manufacturing and firmware baseline identifier\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHardware Technical 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\u003e1746-IO12DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\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\u003e0.4 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e12.7 cm x 5.1 cm x 15.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to +60 deg C (standard industrial chassis environment)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eBackplane current draw sourced directly from SLC 500 chassis power supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Configuration\u003c\/td\u003e\n\u003ctd\u003e12 total channels (6 point DC input, 6 point relay output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e10 VDC to 30 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current Rating\u003c\/td\u003e\n\u003ctd\u003e15 A aggregate \/ relay switching capacity per terminal guidelines\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Communication Velocity and Deterministic Networks\u003c\/h3\u003e\n\u003cp\u003eThe module interfaces directly with the SLC 500 backplane bus communication velocity framework, ensuring deterministic data exchange between the physical I\/O points and the central processing unit. Backplane bus communication velocity handles discrete state updates within fixed scan cycles, preserving loop timing synchronization across distributed rack expansions. I\/O density scaling allows seamless integration alongside specialized analog and communication modules without violating backplane current loading limits or introducing protocol conversion latencies. Firmware flash compatibility is managed through system software tools to maintain baseline operational stability across revision changes.\u003c\/p\u003e\n\u003ch3\u003ePackage Delivery Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Allen-Bradley 1746-IO12DC Combination Input\/Output Module\u003c\/li\u003e\n\u003cli\u003e1 x Removable Terminal Block (RTB) Connector Housing\u003c\/li\u003e\n\u003cli\u003e1 x Hardware Installation Reference Sheet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePhysical Installation Procedures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eChassis Slot Insertion\n\u003cul\u003e\n\u003cli\u003ePower down the industrial controller rack entirely before inserting or extracting the combination module to prevent electrical arc damage.\u003c\/li\u003e\n\u003cli\u003eAlign the module circuit board with the designated chassis guide rails and push firmly until the top and bottom locking tabs engage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eField Wiring and Terminal Connection\n\u003cul\u003e\n\u003cli\u003eTerminate incoming field power and sensor wires into the removable terminal block prior to snapping it onto the front housing.\u003c\/li\u003e\n\u003cli\u003eSecure all screw terminal connections to recommended torque specifications to prevent high-resistance contact under machine vibration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Technical Inquiries\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eQ: What is the total channel breakdown for this specific combination module?\u003c\/li\u003e\n\u003cli\u003eA: The module provides 12 total channels comprising 6 discrete DC inputs and 6 relay outputs.\u003c\/li\u003e\n\u003cli\u003eQ: What is the operational voltage range for the input channels?\u003c\/li\u003e\n\u003cli\u003eA: The input channels support a working range of 10 VDC to 30 VDC.\u003c\/li\u003e\n\u003cli\u003eQ: Does this hardware component support hot-swapping inside an active rack?\u003c\/li\u003e\n\u003cli\u003eA: No, power must be completely removed from the chassis backplane before inserting or removing the module.\u003c\/li\u003e\n\u003cli\u003eQ: How is operating power supplied to the internal module circuitry?\u003c\/li\u003e\n\u003cli\u003eA: Operating power and logic signals are drawn directly through the rack backplane bus connection.\u003c\/li\u003e\n\u003cli\u003eQ: What ambient temperature limits govern standard module operation?\u003c\/li\u003e\n\u003cli\u003eA: The unit is rated to operate between 0 deg C and +60 deg C inside an enclosed industrial enclosure.\u003c\/li\u003e\n\u003cli\u003eQ: Are spare model numbers interchangeable for replacement purposes?\u003c\/li\u003e\n\u003cli\u003eA: Yes, designations such as 1746-1012DC and 1746-IO12DC\/A refer to identical hardware or approved revision variants.\u003c\/li\u003e\n\u003cli\u003eQ: What physical dimensions apply to the packaged shipping configuration?\u003c\/li\u003e\n\u003cli\u003eA: The estimated shipping dimensions are 12.7 cm in length, 5.1 cm in width, and 15.2 cm in height.\u003c\/li\u003e\n\u003cli\u003eQ: What precautionary measure is necessary regarding field wiring shields?\u003c\/li\u003e\n\u003cli\u003eA: Field wiring shields must be grounded at a single low-impedance earth point to suppress electromagnetic interference.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066404917421,"sku":"1746-IO12DC","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/1746-IO12DC_24.jpg?v=1785146361","url":"https:\/\/www.maxwellplc.com\/ga\/products\/allen-bradley-1746-io12dc-combination-input-output-module-slc-500","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}