{"product_id":"allen-bradley-1756-ib32-b-high-density-dc-input-module","title":"Allen-Bradley 1756-IB32\/B ControlLogix 32-Point DC Input Module","description":"\u003cp\u003eThe Allen-Bradley 1756-IB32\/B is a high-density digital input module designed for integration within the ControlLogix platform. This Series B module provides 32 sinking input channels, enabling efficient monitoring of 12V or 24V DC field devices, including sensors, switches, and pushbuttons. Engineered for high-density applications, this single-slot module optimizes rack space while providing robust electrical isolation and signal processing for industrial control environments.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e32-channel sinking input configuration for high-density I\/O requirements.\u003c\/li\u003e\n\u003cli\u003eSplit into two distinct groups of 16 channels, allowing for segmented power distribution and improved fault isolation.\u003c\/li\u003e\n\u003cli\u003eOptimized for 12V and 24V DC field signaling with reliable optocoupler isolation.\u003c\/li\u003e\n\u003cli\u003eSupports electronic keying to prevent incorrect module installation in a configured slot.\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 36-pin removable terminal blocks (RTB), such as the 1756-TBCH and 1756-TBS6H series.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis module is suitable for a wide range of industrial automation tasks, particularly where space in the chassis is limited. It is frequently employed in machine control, process monitoring, and complex assembly line automation where numerous discrete signals must be interfaced with a ControlLogix controller.\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 (2 groups of 16)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Type\u003c\/td\u003e\n\u003ctd\u003eSinking DC\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\u003eBackplane Power\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\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e6.2 Watts (max)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\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\u003eVerify that the removable terminal block (RTB) is fully seated and locked before applying field power.\u003c\/li\u003e\n\u003cli\u003eMaintain proper grounding practices for the chassis backplane to minimize electromagnetic interference (EMI).\u003c\/li\u003e\n\u003cli\u003eUse shielded cables for field wiring to ensure signal integrity, especially in high-noise industrial settings.\u003c\/li\u003e\n\u003cli\u003eEnsure the module is installed in a clean, dry environment within the specified operating temperature range of 0 to 60 degC.\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; it is generally backward compatible with existing ControlLogix rack configurations, though users should verify software project settings and electronic keying requirements.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the purpose of the two-group configuration?\u003c\/strong\u003e The 32 channels are split into two groups of 16 to allow for independent power supply zones. This helps isolate potential electrical faults, ensuring that a short circuit in one field device group does not necessarily disable the entire module.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":51215717335292,"sku":"1756-IB32\/B","price":92.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_d032d03c-7b05-4ad2-b535-fb51f1368a47.jpg?v=1788305613","url":"https:\/\/www.electronicplc.com\/products\/allen-bradley-1756-ib32-b-high-density-dc-input-module","provider":"Electronic PLC","version":"1.0","type":"link"}