{"product_id":"allen-bradley-1756-ia16-controllogix-digital-input-module","title":"Allen-Bradley 1756-IA16 ControlLogix Digital Input Module","description":"\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eAllen-Bradley 1756-IA16 ControlLogix Digital Input Module\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp\u003eConfigured for AC digital signal acquisition in ControlLogix chassis systems, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1756-IA16\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(\u003cstrong\u003e1756-IA16\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edigital input module) provides direct electrical state sampling across 16-channel 120 V AC input groups within a dual 8-point architecture interfaced through the ControlLogix backplane.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cp\u003eNo functional suffix segmentation beyond base order structure\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-IA16\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis defined in the provided dataset. The module is treated as a single fixed hardware configuration within the ControlLogix I\/O family.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\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\"\u003eParameter\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\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\u003e1756-IA16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003eAllen-Bradley\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.23 kg\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\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e0.58 W (backplane)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Inputs\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Groups\u003c\/td\u003e\n\u003ctd\u003e2 groups of 8 inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e74 to 132 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency\u003c\/td\u003e\n\u003ctd\u003e50\/60 Hz (47–63 Hz operating band)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Draw (5.1 V)\u003c\/td\u003e\n\u003ctd\u003e100 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Draw (24 V)\u003c\/td\u003e\n\u003ctd\u003e2 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Off-State Voltage\u003c\/td\u003e\n\u003ctd\u003e20 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Off-State Current\u003c\/td\u003e\n\u003ctd\u003e2.5 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlot Type\u003c\/td\u003e\n\u003ctd\u003eControlLogix chassis-mounted module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStatus Indication\u003c\/td\u003e\n\u003ctd\u003eInput status and module health LEDs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eControlLogix Backplane Deterministic I\/O Scanning\u003c\/h3\u003e\n\u003cp\u003eThe 1756-IA16 operates through ControlLogix backplane cyclic scheduling, where digital input state transitions are sampled and mapped into controller input tags per scan cycle. Backplane arbitration ensures synchronized data exchange between I\/O modules and CPU task execution, enabling deterministic update alignment across distributed chassis slots. Input group partitioning (8+8) supports parallel signal scanning without inter-group electrical coupling within the module architecture.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1756-IA16 support hot-swap insertion in a live ControlLogix chassis?\u003cbr\u003eA: The module follows ControlLogix chassis rules; insertion\/removal requires chassis and controller configuration support to avoid I\/O task interruption.\u003c\/p\u003e\n\u003cp\u003eQ: How is input grouping implemented electrically?\u003cbr\u003eA: The 16 inputs are split into two independent groups of 8 channels, each referenced to its own internal common structure for AC signal acquisition.\u003c\/p\u003e\n\u003cp\u003eQ: What defines off-state leakage behavior?\u003cbr\u003eA: Off-state voltage and current limits (20 V max, 2.5 mA max) define the internal input circuitry threshold for valid logical OFF detection.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eInstall module only in compatible ControlLogix chassis slot with proper backplane alignment.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaintain correct AC input wiring segregation between input groups to avoid cross-coupling between channels.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eUse shielded cable routing where high EMI sources exist, with shield termination at cabinet ground reference only.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eVerify correct voltage range (74–132 V AC) before energizing input circuits.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnsure terminal tightening and connector seating integrity prior to system power-up. \u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43585756921946,"sku":"1756-IA16","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1756-IA162.jpg?v=1783065873","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1756-ia16-controllogix-digital-input-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}