{"product_id":"allen-bradley-1756-ib32-b-high-density-dc-input-module","title":"Allen-Bradley 1756-IB32\/B High-Density DC Input Module","description":"\u003cp\u003eThe Allen-Bradley 1756-IB32\/B is a high-density digital DC input module engineered for the ControlLogix platform. As a Series B revision, this module provides 32 sinking input channels, enabling efficient integration of discrete 24V DC field devices such as limit switches, sensors, and pushbuttons into your automation architecture. By consolidating 32 points into a single chassis slot, this module optimizes rack space while providing robust signal isolation and noise immunity between field devices and the controller backplane.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e32-channel high-density digital input capacity.\u003c\/li\u003e\n\u003cli\u003eSinking input configuration with two independent groups of 16 channels each.\u003c\/li\u003e\n\u003cli\u003eOptimized for 12\/24V DC applications with a wide operating range of 10 to 31.2V DC.\u003c\/li\u003e\n\u003cli\u003eCompatible with standard ControlLogix RTB options, including cage clamp and spring clamp variants.\u003c\/li\u003e\n\u003cli\u003eSupports electronic keying to prevent incorrect module insertion and configuration errors.\u003c\/li\u003e\n\u003cli\u003eLow power dissipation design suitable for high-density chassis environments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis module is widely utilized in industrial control systems requiring high-point-count digital monitoring. It is ideal for monitoring status signals in manufacturing lines, material handling systems, and process control applications where space-efficient I\/O density is required within a ControlLogix rack.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1756-IB32\/B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003e32 channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrouping\u003c\/td\u003e\n\u003ctd\u003e2 isolated groups of 16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Range\u003c\/td\u003e\n\u003ctd\u003e10 to 31.2V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-State Current\u003c\/td\u003e\n\u003ctd\u003e4.8 mA at 10V to 5.5 mA at 31.2V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-State Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC (max)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e6.2 Watts (max)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e120 mA at 5.1V DC; 2 mA at 24V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the ControlLogix chassis is powered down before inserting or removing the module to prevent electrical damage.\u003c\/li\u003e\n\u003cli\u003eUse compatible 1756-TBCH or 1756-TBSH terminal blocks for secure field wiring.\u003c\/li\u003e\n\u003cli\u003eMaintain proper cable routing to minimize EMI; keep signal wires separated from high-voltage power lines.\u003c\/li\u003e\n\u003cli\u003eVerify that the sinking input configuration matches your field device wiring (DC+ source).\u003c\/li\u003e\n\u003cli\u003eEnsure the module is fully seated in the chassis slot and the locking latch is engaged.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs this module compatible with Series A systems?\u003c\/strong\u003e The 1756-IB32\/B is a Series B revision. While it is generally backward compatible with most ControlLogix backplanes, always verify your specific controller firmware requirements and project configuration in Studio 5000.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the purpose of the two input groups?\u003c\/strong\u003e The two groups of 16 channels allow for electrical segmentation, meaning you can power the two groups from separate 24V DC supplies to prevent a single field-side fault from affecting the entire module.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":44035109486682,"sku":"1756-IB32\/B","price":92.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/wm_1_3f5bf7aa-7273-4cf3-937f-11ed1bef0a37.jpg?v=1788927865","url":"https:\/\/www.spareoil.com\/es\/products\/allen-bradley-1756-ib32-b-high-density-dc-input-module","provider":"SpareOil Automation","version":"1.0","type":"link"}