{"product_id":"allen-bradley-1756-ih16i-controllogix-input-module","title":"Allen-Bradley 1756-IH16I ControlLogix Input Module","description":"\u003ch3\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-IH16I\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edigital input module from\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003eRockwell Automation\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eAllen-Bradley is part of the ControlLogix PLC platform and is designed for high-voltage DC discrete input applications requiring electrical isolation at each point. The module features sixteen individually isolated 125V DC inputs, allowing reliable signal acquisition from independent field devices while minimizing the risk of cross-channel interference.\u003c\/p\u003e\n\u003cp\u003eIts isolated channel architecture makes the module suitable for complex industrial control systems where signal integrity, electrical separation, and field-side protection are critical.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eSixteen individually isolated digital input channels\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDesigned for 125V DC sink\/source input devices\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSupports high-voltage industrial discrete signals\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFast input response with selectable filtering\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReduced channel-to-channel electrical interference\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatible with ControlLogix chassis systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRemovable terminal block support for simplified maintenance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIntegrated diagnostic capability for field monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1756-IH16I\u003c\/strong\u003e\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\u003eProduct Series\u003c\/td\u003e\n\u003ctd\u003eControlLogix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eDigital Isolated Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e16 Individually Isolated Inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal Type\u003c\/td\u003e\n\u003ctd\u003eDC Sink\/Source\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Voltage\u003c\/td\u003e\n\u003ctd\u003e125V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e90–146V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Input Current\u003c\/td\u003e\n\u003ctd\u003e1 mA at 90V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Input Current\u003c\/td\u003e\n\u003ctd\u003e3 mA at 146V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-State Current\u003c\/td\u003e\n\u003ctd\u003eMaximum 0.8 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Delay Time\u003c\/td\u003e\n\u003ctd\u003e6 ms plus user-selected filter time\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current @ 5.1V DC\u003c\/td\u003e\n\u003ctd\u003e125 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current @ 24V DC\u003c\/td\u003e\n\u003ctd\u003e3 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Power Dissipation\u003c\/td\u003e\n\u003ctd\u003e5 W at 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Type\u003c\/td\u003e\n\u003ctd\u003ePoint-to-Point Isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible RTBs\u003c\/td\u003e\n\u003ctd\u003e1756-TBCH, 1756-TBS6H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Platform\u003c\/td\u003e\n\u003ctd\u003eControlLogix Chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.4 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eElectrical Isolation Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eEach input point on the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-IH16I\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoperates with independent isolation, which helps protect the control system from voltage fluctuations, electrical noise, and grounding issues commonly found in industrial environments. This design is especially beneficial in applications involving distributed field wiring or mixed-voltage installations.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe module is commonly used in systems that require reliable high-voltage digital signal monitoring, including:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003ePower distribution systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProcess control equipment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTurbine and generator monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIndustrial motor control centers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eManufacturing automation lines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSubstation control systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHeavy industrial process facilities\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch4\u003e\u003cstrong\u003eWhat type of input signals does the 1756-IH16I support?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe module accepts 125V DC discrete input signals and supports both sink and source wiring configurations.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eWhy is individual point isolation important?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eIndividually isolated channels help prevent electrical interference between field devices and improve protection against grounding faults or voltage transients.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eWhich terminal blocks are compatible with this module?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe module supports the 1756-TBCH and 1756-TBS6H removable terminal blocks.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eCan the module be installed in any ControlLogix chassis?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eYes. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-IH16I\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis designed for use with standard Allen-Bradley ControlLogix chassis systems.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43392195428442,"sku":"1756-IH16I","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1756-IH16I2.jpg?v=1779161667","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1756-ih16i-controllogix-input-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}