{"product_id":"1769-im1212-allen-bradley-240vac-digital-input-module","title":"1769-IM1212 Allen-Bradley 240VAC digital input module","description":"\u003ch2\u003eAllen-Bradley 1769-IM12 Compact Digital Input Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1769-IM12\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1769-IM12\u003c\/strong\u003e Compact Input Module, operates as a dedicated hardware component for high-voltage AC discrete signal acquisition within CompactLogix and MicroLogix 1500 systems. The device converts 200\/240 V AC line level sensor responses into internal logic states via an isolated bus boundary interface. A multi-point termination field uses internally connected common return lines to group the field circuitry into a single parallel wiring node.\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\u003e1769-IM12\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\u003e0.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e118 x 35 x 87 mm\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\u003eStorage Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to +85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e3.65 W maximum heat dissipation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e12 discrete AC inputs (1 group of 12)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Category\u003c\/td\u003e\n\u003ctd\u003e200\/240 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e159 to 264 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Frequency Range\u003c\/td\u003e\n\u003ctd\u003e47 to 63 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Current Loading\u003c\/td\u003e\n\u003ctd\u003e100 mA nominal \/ 12 mA maximum inrush\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Impedance\u003c\/td\u003e\n\u003ctd\u003e27 kOhm @ 50 Hz \/ 23 kOhm @ 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current Draw\u003c\/td\u003e\n\u003ctd\u003e100 mA @ 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e132 V AC working voltage (tested at 1836 V AC for 1 s)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Propagation Delay\u003c\/td\u003e\n\u003ctd\u003e20 ms nominal ON\/OFF delay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Base\u003c\/td\u003e\n\u003ctd\u003eDIN-rail or panel chassis attachment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Block\u003c\/td\u003e\n\u003ctd\u003e1769-RTBN18 removable assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eCE, UL, CSA, IEC Class II Reinforced Insulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Communication and I\/O Density Scaling\u003c\/h3\u003e\n\u003cp\u003eThe internal logic card coordinates status frames across the 1769 system bus, utilizing a fixed 100 mA current draw from the 5 VDC rail to drive the optical isolation circuitry. The physical architecture scales local I\/O density by mapping all 12 AC input channels onto a single logix data word without generating configuration latency. Firmware flash compatibility rules require proper alignment within the standard chassis configuration layout to prevent backplane communication velocity degradation when mixing digital modules alongside process controllers.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the internal common arrangement affect field wiring layouts?\u003c\/p\u003e\n\u003cp\u003eA: The hardware groups all 12 input points into a single shared return node, meaning all field devices wired to this card must operate off the same AC distribution phase.\u003c\/p\u003e\n\u003cp\u003eQ: Can the 1769-IM12 module withstand sudden high-voltage line spikes?\u003c\/p\u003e\n\u003cp\u003eA: The input-point-to-bus insulation barrier is verified by a dielectric test of 1836 V AC for 1 second, providing IEC Class II reinforced insulation against electrical transients.\u003c\/p\u003e\n\u003cp\u003eQ: What power supplies supply the internal voltage rails for this hardware?\u003c\/p\u003e\n\u003cp\u003eA: The backplane power allocation requires system integration with 1769-PA2, 1769-PB2, 1769-PA4, or 1769-PB4 power modules.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eShielding and Separation: Route high-voltage AC field lines through independent wire ducts, maintaining physical distance from low-voltage DC signals and serial data cables.\u003c\/li\u003e\n\u003cli\u003eTorque Specifications: Secure field wires into the 1769-RTBN18 terminal block using 22 to 14 AWG solid or 22 to 16 AWG stranded copper wire, clamping screws to specified industrial tight tolerances.\u003c\/li\u003e\n\u003cli\u003eDIN-Rail Grounding: Ground the mounting rail to the enclosure master ground lug to verify that common-mode electrical noise drains correctly away from the internal logic bus.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":44420207673443,"sku":"1769-IM12","price":310.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/219_77d33081-8e3f-4378-b4aa-165415d91f3a.jpg?v=1785316512","url":"https:\/\/www.autocontrolglobal.com\/products\/1769-im1212-allen-bradley-240vac-digital-input-module","provider":"AutoControl Global","version":"1.0","type":"link"}