{"product_id":"allen-bradley-1756-ob32-controllogix-32-point-dc-output-module","title":"Module de sortie DC 32 points ControlLogix Allen-Bradley 1756-OB32","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-OB32\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-density discrete output module for the Allen-Bradley ControlLogix platform. It provides\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e32 sourcing outputs\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ein a single-slot module, divided into two isolated groups of 16 points each. Operating within a 12\/24V DC range, this module is ideal for driving high-density solenoid valves, relays, and indicator lights in complex automation systems.\u003c\/p\u003e\n\u003cp\u003eEngineered for performance and reliability, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-OB32\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efeatures exceptionally fast response times (typically 60 µs from Off to On) and supports\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eScheduled Outputs\u003c\/strong\u003e, ensuring synchronized operation within the Coordinated System Time (CST) for time-critical manufacturing processes.\u003c\/p\u003e\n\u003ch3\u003eTechnical Configuration\u003c\/h3\u003e\n\u003cp\u003eThe 1756-OB32 is designed for high-density control and environmental resilience:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh Point Density:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e32 points per module allow for smaller chassis requirements and reduced cabinet footprint.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGroup Isolation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eOutputs are arranged in two groups of 16, providing 125V continuous isolation between groups to protect against cross-talk or different power source issues.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRobust Diagnostics:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFeatures per-point fault mode states (Hold Last State, On, or Off), allowing for predictable machine behavior during a processor fault or program change.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eConformal Coating:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis module is rated for harsh environments, meeting\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSeverity Level G3\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(ISA 71.04) for corrosive atmospheres, making it suitable for wastewater, chemical, or heavy industrial sites.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eElectronic Keying:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSoftware-configurable keying ensures that the correct module type is present in the slot before the system allows operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification Details\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1756-OB32\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAllen-Bradley (Rockwell Automation)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOutputs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e32 Sourcing (16 per group)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e10…31.2V DC (24V DC Nominal)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCurrent per Point\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.5 A @ 50 °C \/ 0.35 A @ 60 °C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCurrent per Module\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e16 A @ 50 °C \/ 10 A @ 60 °C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eResponse Time (Off to On)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e60 µs nominal \/ 1 ms max\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eIsolation Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e250V (Outputs to Backplane) \/ 125V (Group to Group)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePower Dissipation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4.8 W @ 60 °C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eThermal Dissipation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e16.37 BTU\/hr\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnical FAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module have internal fusing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The 1756-OB32 is not internally fused. To protect your outputs from short circuits or over-current conditions, it is highly recommended to use a fused Interface Module (IFM) or external terminal block fuses.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this module to drive high-inrush loads?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module supports a surge current of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1 A for 10 ms per point\u003c\/strong\u003e, repeatable every 2 seconds at 60 °C. If your load exceeds this (such as large DC motors), you should use an interposing relay.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the \"Off-state leakage current\"?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe maximum leakage current is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e0.5 mA per point\u003c\/strong\u003e. This is important to consider when driving high-impedance loads like small LEDs or sensitive electronic inputs, which might \"glow\" or stay active even when the output is technically Off.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eEngineering \u0026amp; Installation Guide\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThermal Derating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhen designing your panel, account for thermal derating. At\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e50 °C (122 °F)\u003c\/strong\u003e, the module can handle 0.5 A per point and 16 A total. However, at\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e60 °C (140 °F)\u003c\/strong\u003e, the capacity drops to 0.35 A per point and 10 A total. Ensure your enclosure has adequate cooling to maintain these limits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWiring and Termination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTerminal Blocks:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRequires a 36-pin Removable Terminal Block (RTB), specifically the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-TBCH\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(Cage clamp) or\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-TBSH\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(Spring clamp).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWire Size:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUse 22–14 AWG solid or stranded copper wire rated for at least 105 °C. For double-wire connections, use 22–16 AWG.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCommoning:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEach group of 16 points has its own DC+ (VDC) and DC- (COM) terminals. Ensure both groups are powered if all 32 points are in use.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSoftware Configuration\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIn Studio 5000:\u003c\/p\u003e\n\u003col class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFault\/Program States:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eConfigure how the outputs should react when the PLC enters \"Program Mode\" or if a communication \"Fault\" occurs. The default is \"Off,\" but \"Hold Last State\" is often used in continuous process applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eElectronic Keying:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSet to \"Compatible Module\" for easier maintenance, or \"Exact Match\" for high-security applications where only a specific firmware\/series is allowed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52695190438251,"sku":"Allen Bradley 1756-OB32","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/allen-bradley-1756-ob32-controllogix-32-pt-12-24v-dc-d-o-module-sqqn2xnvqwo_7404ec45-77e4-4220-8ebf-3cfe69522330.jpg?v=1766114610","url":"https:\/\/www.plcprotech.com\/fr\/products\/allen-bradley-1756-ob32-controllogix-32-point-dc-output-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}