{"product_id":"allen-bradley-1746-ih16-slc-500-series-current-sinking-dc-input-module","title":"Allen-Bradley 1746-IH16 SLC 500 Series Current Sinking DC Input Module","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1746-IH16\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1746-IH16\u003c\/strong\u003e Current Sinking DC Input Module, operates as a dedicated hardware component for receiving high-voltage DC field signals within SLC 500 controller platforms. The module provides 16 input channels with 90 to 146 V DC sink signal compatibility for discrete monitoring applications.\u003c\/p\u003e\n\u003ch3\u003eModel Identification\u003c\/h3\u003e\n\u003cp\u003eThe 1746-IH16 is a 16-point digital input module designed for SLC 500 chassis installation. The catalog number identifies the module electrical configuration and input voltage class. Related ordering references include 1746-1H16, 1746-IHI6, and 1746-IH16\/C.\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\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\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-IH16\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 Type\u003c\/td\u003e\n\u003ctd\u003eCurrent Sinking DC Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eSLC 500\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\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e13.8 x 13 x 3.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e85 mA at 5 V DC backplane supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Configuration\u003c\/td\u003e\n\u003ctd\u003e16-point sinking DC input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Range\u003c\/td\u003e\n\u003ctd\u003e90 to 146 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal Type\u003c\/td\u003e\n\u003ctd\u003eDigital DC discrete input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Delay\u003c\/td\u003e\n\u003ctd\u003e9 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff State Current\u003c\/td\u003e\n\u003ctd\u003e0.8 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Interface\u003c\/td\u003e\n\u003ctd\u003eSLC 500 chassis backplane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTariff Code\u003c\/td\u003e\n\u003ctd\u003e8537101190\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\u003c\/h3\u003e\n\u003cp\u003eThe 1746-IH16 integrates with the SLC 500 backplane communication structure for controller-to-I\/O data exchange. Its 16-channel configuration supports I\/O density scaling within SLC chassis layouts while maintaining the defined backplane current load requirement.\u003c\/p\u003e\n\u003cp\u003eThe module operates as a discrete signal acquisition point between field devices and the processor unit. Correct slot addressing and chassis configuration are required for proper controller recognition and input data mapping.\u003c\/p\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cp\u003eThe delivered package contains:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Allen-Bradley 1746-IH16 Current Sinking DC Input Module\u003c\/li\u003e\n\u003cli\u003e1 x Factory identification label with catalog information\u003c\/li\u003e\n\u003cli\u003e1 x Protective packaging suitable for industrial electronic components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional accessories may include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSLC 500 chassis system components\u003c\/li\u003e\n\u003cli\u003eTerminal blocks compatible with the selected installation configuration\u003c\/li\u003e\n\u003cli\u003eSLC programming and configuration equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003ch4\u003eModule Mounting\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the module into a compatible SLC 500 chassis slot.\u003c\/li\u003e\n\u003cli\u003eConfirm chassis power is removed before module insertion or removal.\u003c\/li\u003e\n\u003cli\u003eVerify module keying and slot position before operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eElectrical Wiring\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eConnect field DC input signals according to the module terminal assignment.\u003c\/li\u003e\n\u003cli\u003eSeparate high-voltage DC signal wiring from communication and low-level analog wiring.\u003c\/li\u003e\n\u003cli\u003eUse proper grounding methods for cabinet installation.\u003c\/li\u003e\n\u003cli\u003eCheck field polarity before applying voltage to input channels.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSystem Configuration\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eConfigure the module type correctly within the SLC controller project.\u003c\/li\u003e\n\u003cli\u003eVerify input addressing after installation.\u003c\/li\u003e\n\u003cli\u003eConfirm processor communication status before placing equipment into service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eWhat type of input signals does the 1746-IH16 accept?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe module accepts discrete sinking DC input signals within the specified 90 to 146 V DC operating range.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eHow many input channels are available on this module?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 1746-IH16 provides 16 individual DC input points for monitoring field devices.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eWhat is the backplane current requirement of the module?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe module requires 85 mA from the 5 V DC SLC chassis backplane supply.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eCan the 1746-IH16 be installed in any PLC rack?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe module is designed specifically for compatible Allen-Bradley SLC 500 chassis configurations.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eDoes the module support analog signal measurement?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNo. The 1746-IH16 is a discrete digital input module and does not process analog values.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eWhat is the input signal delay specification?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe specified input signal delay time is 9 milliseconds for state change detection.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eWhat should be checked before replacing an existing module?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eVerify the catalog number, voltage class, wiring arrangement, and controller configuration before replacement.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eDoes the module require separate external power wiring?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe module uses the SLC chassis backplane supply for internal operation while field signals are connected through input terminals.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066404556973,"sku":"1746-IH16","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/1746-IH16_13.jpg?v=1785142194","url":"https:\/\/www.maxwellplc.com\/ga\/products\/allen-bradley-1746-ih16-slc-500-series-current-sinking-dc-input-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}