{"product_id":"8-point-analog-module-new-allen-bradley-1756-of8-controllogix","title":"8-Point Analog Module New | Allen-Bradley 1756-OF8 ControlLogix","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1756-OF8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprovides high-precision analog signal generation for the ControlLogix platform. This module converts digital PLC data into accurate voltage or current signals to drive valves, motor drives, and chemical feed pumps. Each of the 8 channels operates independently, allowing for mixed-signal environments within a single chassis slot. We supply this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Original\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ein factory packaging, ensuring the highest calibrated accuracy for your mission-critical process loops.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDetails\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\u003eNumber of Outputs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8 Voltage or Current Channels\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOutput Ranges\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e±10V, 0–10V, 0–5V; 0–20 mA, 4–20 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e15 Bits\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCalibrated Accuracy\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBetter than 0.05% of range\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSettling Time\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u0026lt; 2 ms (to 95% of final value)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBackplane Power\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e5.8 Watts\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCurrent Draw\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e150 mA @ 5.1V; 210 mA @ 24V\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\u003e16.78 BTU\/hr\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 Continuous (Channel-to-Backplane)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProtection\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e24V DC Overvoltage; Electronic Current Limiting (21 mA)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eExceptional Signal Precision:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 15-bit resolution ensures ultra-smooth control increments. This precision eliminates \"stepping\" in valve positioning, which significantly reduces mechanical wear on final control elements and improves process stability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRapid Response Times:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eA settling time of less than 2 ms allows the module to track dynamic setpoint changes instantly. This speed makes the 1756-OF8 ideal for high-speed tension control or hydraulic pressure regulation where milliseconds matter.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBuilt-in Circuit Protection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module incorporates electronic current limiting and 24V DC overvoltage protection. These safety features prevent a single faulty actuator or a field wiring short from damaging the entire module or the ControlLogix backplane.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eComprehensive Diagnostics:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1756-OF8 detects open-circuit conditions in current loops (at settings \u0026gt;0.1 mA). This immediate feedback allows maintenance teams to identify broken field wires or failed coils without manual loop testing, reducing Mean Time to Repair (MTTR).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhich Removable Terminal Block (RTB) should I use with the 1756-OF8?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1756-OF8 requires a 20-pin RTB. You should use the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-TBNH\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(NEMA screw clamp) or the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-TBSH\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(Spring clamp). Always verify that the RTB is seated correctly and locked before applying field power.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I mix voltage and current outputs on the same module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. You configure each channel individually via the Studio 5000 software. You can drive a variable frequency drive (VFD) via a 0-10V signal on Channel 0 while simultaneously controlling a proportional valve via a 4-20mA loop on Channel 1.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat happens to the outputs if the controller enters Program Mode or a Fault state?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1756-OF8 features configurable \"Hold Last State\" or \"Go to Safe Value\" settings. You can program each channel to drop to 0mA\/0V, hold its last commanded position, or move to a specific user-defined safety value to ensure the process remains in a safe condition during a CPU halt.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs external 24V DC power required?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1756-OF8 draws its power directly from the ControlLogix backplane (both the 5.1V and 24V rails). It does not require a separate external power supply for the module logic, though your field actuators may require their own independent power sources.\u003c\/p\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":43359132778586,"sku":"1756-OF8","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/2._2b24b995-b536-4d29-a350-18b44276fb61.jpg?v=1778634935","url":"https:\/\/www.spareoil.com\/products\/8-point-analog-module-new-allen-bradley-1756-of8-controllogix","provider":"SpareOil Automation","version":"1.0","type":"link"}